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| PCA9626 24-bit Fm+ I2C-bus 100 mA 40 V LED driver Rev. 02 -- 31 August 2009 Product data sheet 1. General description The PCA9626 is an I2C-bus controlled 24-bit LED driver optimized for voltage switch dimming and blinking 100 mA Red/Green/Blue/Amber (RGBA) LEDs. Each LED output has its own 8-bit resolution (256 steps) fixed frequency individual PWM controller that operates at 97 kHz with a duty cycle that is adjustable from 0 % to 99.6 % to allow the LED to be set to a specific brightness value. An additional 8-bit resolution (256 steps) group PWM controller has both a fixed frequency of 190 Hz and an adjustable frequency between 24 Hz to once every 10.73 seconds with a duty cycle that is adjustable from 0 % to 99.6 % that is used to either dim or blink all LEDs with the same value. Each LED output can be off, on (no PWM control), set at its individual PWM controller value or at both individual and group PWM controller values. The PCA9626 operates with a supply voltage range of 2.3 V to 5.5 V and the 100 mA open-drain outputs allow voltages up to 40 V. The PCA9626 is one of the first LED controller devices in a new Fast-mode Plus (Fm+) family. Fm+ devices offer higher frequency (up to 1 MHz) and more densely populated bus operation (up to 4000 pF). The active LOW Output Enable input pin (OE) blinks all the LED outputs and can be used to externally PWM the outputs, which is useful when multiple devices need to be dimmed or blinked together without using software control. Software programmable LED Group and three Sub Call I2C-bus addresses allow all or defined groups of PCA9626 devices to respond to a common I2C-bus address, allowing for example, all red LEDs to be turned on or off at the same time or marquee chasing effect, thus minimizing I2C-bus commands. Seven hardware address pins allow up to 126 devices on the same bus. The Software Reset (SWRST) Call allows the master to perform a reset of the PCA9626 through the I2C-bus, identical to the Power-On Reset (POR) that initializes the registers to their default state causing the output NAND FETs to be OFF (LED off). This allows an easy and quick way to reconfigure all device registers to the same condition. In addition to these features found in PCA9633, PCA9634, PCA9635, PCA9622 and PCA9624, a new feature to control LED output pattern is incorporated in the PCA9626. A new control byte called `Chase Byte' allows enabling or disabling of selective LED outputs depending on the value of the Chase Byte. This feature greatly reduces the number of bytes to be sent to the PCA9626 when repetitive patterns need to be displayed as in creating a marquee chasing effect. If the PCA9626 on-chip 100 mA NAND FETs do not provide enough current or voltage to drive the LEDs, then the PCA9635 and the PCA9635 with larger current or higher voltage external drivers can be used. NXP Semiconductors PCA9626 24-bit Fm+ I2C-bus 100 mA 40 V LED driver 2. Features I 24 LED drivers. Each output programmable at: N Off N On N Programmable LED brightness N Programmable group dimming/blinking mixed with individual LED brightness I 1 MHz Fast-mode Plus compatible I2C-bus interface with 30 mA high drive capability on SDA output for driving high capacitive buses I 256-step (8-bit) linear programmable brightness per LED output varying from fully off (default) to maximum brightness using a 97 kHz PWM signal I 256-step group brightness control allows general dimming (using a 190 Hz PWM signal) from fully off to maximum brightness (default) I 256-step group blinking with frequency programmable from 24 Hz to 10.73 s and duty cycle from 0 % to 99.6 % I 24 open-drain outputs can sink between 0 mA to 100 mA and are tolerant to a maximum off state voltage of 40 V. No input function. I Output state change programmable on the Acknowledge or the STOP Command to update outputs byte-by-byte or all at the same time (default to `Change on STOP'). I Active LOW Output Enable (OE) input pin allows for hardware blinking and dimming of the LEDs I 7 hardware address pins allow 126 PCA9626 devices to be connected to the same I2C-bus and to be individually programmed I 4 software programmable I2C-bus addresses (one LED Group Call address and three LED Sub Call addresses) allow groups of devices to be addressed at the same time in any combination (for example, one register used for `All Call' so that all the PCA9626s on the I2C-bus can be addressed at the same time and the second register used for three different addresses so that 13 of all devices on the bus can be addressed at the same time in a group). Software enable and disable for I2C-bus address. I A Chase Byte allows execution of predefined ON/OFF pattern for the 24 LED outputs I Software Reset feature (SWRST Call) allows the device to be reset through the I2C-bus I 25 MHz internal oscillator requires no external components I Internal power-on reset I Noise filter on SDA/SCL inputs I No glitch on power-up I Supports hot insertion I Low standby current I Operating power supply voltage (VDD) range of 2.3 V to 5.5 V I 5.5 V tolerant inputs on non-LED pins I -40 C to +85 C operation I ESD protection exceeds 2000 V HBM per JESD22-A114, 200 V MM per JESD22-A115 and 1000 V CDM per JESD22-C101 I Latch-up testing is done to JEDEC Standard JESD78 which exceeds 100 mA I Packages offered: LQFP48, HVQFN48 PCA9626_2 (c) NXP B.V. 2009. All rights reserved. Product data sheet Rev. 02 -- 31 August 2009 2 of 47 NXP Semiconductors PCA9626 24-bit Fm+ I2C-bus 100 mA 40 V LED driver 3. Applications I I I I I RGB or RGBA LED drivers LED status information LED displays LCD backlights Keypad backlights for cellular phones or handheld devices 4. Ordering information Table 1. Ordering information Topside mark PCA9626 PCA9626 Package Name PCA9626B PCA9626BS LQFP48 Description plastic low profile quad flat package; 48 leads; body 7 x 7 x 1.4 mm Version SOT313-2 SOT778-4 Type number HVQFN48 plastic thermal enhanced very thin quad flat package; no leads; 48 terminals; body 6 x 6 x 0.85 mm PCA9626_2 (c) NXP B.V. 2009. All rights reserved. Product data sheet Rev. 02 -- 31 August 2009 3 of 47 xxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx x xxxxxxxxxxxxxx xxxxxxxxxx xxx xxxxxx xxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxx xxxxx xxxxxx xx xxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxx xxxxxxx xxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxx xxxxxxxxxxxxxx xxxxxx xx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxx xxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxx xxxxx x x Product data sheet Rev. 02 -- 31 August 2009 (c) NXP B.V. 2009. All rights reserved. PCA9626_2 5. Block diagram NXP Semiconductors A0 A1 A2 A3 A4 A5 A6 PCA9626 SCL SDA I2C-BUS CONTROL VDD VSS LED STATE SELECT REGISTER PWM REGISTER X BRIGHTNESS CONTROL POWER-ON RESET INPUT FILTER LEDn 24-bit Fm+ I2C-bus 100 mA 40 V LED driver 97 kHz 25 MHz OSCILLATOR 24.3 kHz GRPFREQ REGISTER MUX/ CONTROL GRPPWM REGISTER '0' - permanently OFF '1' - permanently ON FET DRIVER 190 Hz OE 002aad608 PCA9626 Remark: Only one LED output shown for clarity. 4 of 47 Fig 1. Block diagram of PCA9626 NXP Semiconductors PCA9626 24-bit Fm+ I2C-bus 100 mA 40 V LED driver 6. Pinning information 6.1 Pinning 45 VSS 44 LED23 43 LED22 42 LED21 41 LED20 40 VDD 39 SDA 38 SCL 48 VSS 47 A1 VSS LED0 LED1 LED2 LED3 VSS VSS LED4 LED5 1 2 3 4 5 6 7 8 9 37 VSS 36 VSS 35 LED19 34 LED18 33 LED17 32 LED16 31 VSS 30 VSS 29 LED15 28 LED14 27 LED13 26 LED12 25 VSS OE 24 38 SCL 37 VSS 36 VSS 35 LED19 34 LED18 33 LED17 32 LED16 31 VSS 30 VSS 29 LED15 28 LED14 27 LED13 26 LED12 25 VSS OE 24 002aad609 002aad662 46 A0 PCA9626B LED6 10 LED7 11 VSS 12 A2 13 A3 14 A4 15 VSS 16 LED8 17 LED9 18 LED10 19 LED11 20 VSS 21 41 LED20 LED11 20 A5 22 A6 23 A5 22 39 SDA Fig 2. Pin configuration for LQFP48 44 LED23 43 LED22 42 LED21 LED10 19 47 A1 VSS LED0 LED1 LED2 LED3 VSS VSS LED4 LED5 1 2 3 4 5 6 7 8 9 46 A0 terminal 1 index area PCA9626BS LED6 10 LED7 11 VSS 12 A2 13 A3 14 A4 15 VSS 16 LED8 17 LED9 18 VSS 21 A6 23 Transparent top view Fig 3. Pin configuration for HVQFN48 PCA9626_2 40 VDD 48 VSS 45 VSS (c) NXP B.V. 2009. All rights reserved. Product data sheet Rev. 02 -- 31 August 2009 5 of 47 NXP Semiconductors PCA9626 24-bit Fm+ I2C-bus 100 mA 40 V LED driver 6.2 Pin description Table 2. Symbol LED22 LED23 VSS A0 A1 LED0 LED1 LED2 LED3 LED4 LED5 LED6 LED7 A2 A3 A4 LED8 LED9 LED10 LED11 A5 A6 OE LED12 LED13 LED14 LED15 LED16 LED17 LED18 LED19 SCL SDA VDD LED20 LED21 Pin description Pin 43 44 1, 6, 7, 12, 16, 21, 25, 30, 31, 36, 37, 45, 48[1] 46 47 2 3 4 5 8 9 10 11 13 14 15 17 18 19 20 22 23 24 26 27 28 29 32 33 34 35 38 39 40 41 42 Type O O power supply I I O O O O O O O O I I I O O O O I I I O O O O O O O O I I/O power supply O O Description LED driver 22 LED driver 23 supply ground address input 0 address input 1 LED driver 0 LED driver 1 LED driver 2 LED driver 3 LED driver 4 LED driver 5 LED driver 6 LED driver 7 address input 2 address input 3 address input 4 LED driver 8 LED driver 9 LED driver 10 LED driver 11 address input 5 address input 6 active LOW output enable LED driver 12 LED driver 13 LED driver 14 LED driver 15 LED driver 16 LED driver 17 LED driver 18 LED driver 19 serial clock line serial data line supply voltage LED driver 20 LED driver 21 PCA9626_2 (c) NXP B.V. 2009. All rights reserved. Product data sheet Rev. 02 -- 31 August 2009 6 of 47 NXP Semiconductors PCA9626 24-bit Fm+ I2C-bus 100 mA 40 V LED driver [1] HVQFN48 package supply ground is connected to both VSS pins and exposed center pad. VSS pins must be connected to supply ground for proper device operation. For enhanced thermal, electrical, and board level performance, the exposed pad needs to be soldered to the board using a corresponding thermal pad on the board and for proper heat conduction through the board, thermal vias need to be incorporated in the PCB in the thermal pad region. 7. Functional description Refer to Figure 1 "Block diagram of PCA9626". 7.1 Device addresses Following a START condition, the bus master must output the address of the slave it is accessing. There are a maximum of 128 possible programmable addresses using the 7 hardware address pins. Two of these addresses, Software Reset and LED All Call, cannot be used because their default power-up state is ON, leaving a maximum of 126 addresses. Using other reserved addresses, as well as any other Sub Call address, will reduce the total number of possible addresses even further. 7.1.1 Regular I2C-bus slave address The I2C-bus slave address of the PCA9626 is shown in Figure 4. To conserve power, no internal pull-up resistors are incorporated on the hardware selectable address pins and they must be pulled HIGH or LOW externally. Remark: Using reserved I2C-bus addresses will interfere with other devices, but only if the devices are on the bus and/or the bus will be open to other I2C-bus systems at some later date. In a closed system where the designer controls the address assignment these addresses can be used since the PCA9626 treats them like any other address. The LED All Call, Software Rest and PCA9564 or PCA9665 slave address (if on the bus) can never be used for individual device addresses. * PCA9626 LED All Call address (1110 000) and Software Reset (0000 0110) which are active on start-up * PCA9564 (0000 000) or PCA9665 (1110 000) slave address which is active on start-up * * * * `reserved for future use' I2C-bus addresses (0000 011, 1111 1XX) slave devices that use the 10-bit addressing scheme (1111 0XX) slave devices that are designed to respond to the General Call address (0000 000) High-speed mode (Hs-mode) master code (0000 1XX) slave address A6 A5 A4 A3 A2 A1 A0 R/W hardware selectable 002aab319 Fig 4. Slave address PCA9626_2 (c) NXP B.V. 2009. All rights reserved. Product data sheet Rev. 02 -- 31 August 2009 7 of 47 NXP Semiconductors PCA9626 24-bit Fm+ I2C-bus 100 mA 40 V LED driver The last bit of the address byte defines the operation to be performed. When set to logic 1 a read is selected, while a logic 0 selects a write operation. 7.1.2 LED All Call I2C-bus address * Default power-up value (ALLCALLADR register): E0h or 1110 000 * Programmable through I2C-bus (volatile programming) * At power-up, LED All Call I2C-bus address is enabled. PCA9626 sends an ACK when E0h (R/W = 0) or E1h (R/W = 1) is sent by the master. See Section 7.3.9 "ALLCALLADR, LED All Call I2C-bus address" for more detail. Remark: The default LED All Call I2C-bus address (E0h or 1110 000) must not be used as a regular I2C-bus slave address since this address is enabled at power-up. All of the PCA9626s on the I2C-bus will acknowledge the address if sent by the I2C-bus master. 7.1.3 LED Sub Call I2C-bus addresses * 3 different I2C-bus addresses can be used * Default power-up values: - SUBADR1 register: E2h or 1110 001 - SUBADR2 register: E4h or 1110 010 - SUBADR3 register: E8h or 1110 100 * Programmable through I2C-bus (volatile programming) * At power-up, Sub Call I2C-bus addresses are disabled. PCA9626 does not send an ACK when E2h (R/W = 0) or E3h (R/W = 1), E4h (R/W = 0) or E5h (R/W = 1), or E8h (R/W = 0) or E9h (R/W = 1) is sent by the master. See Section 7.3.8 "SUBADR1 to SUBADR3, I2C-bus subaddress 1 to 3" for more detail. Remark: The default LED Sub Call I2C-bus addresses may be used as regular I2C-bus slave addresses as long as they are disabled. 7.1.4 Software Reset I2C-bus address The address shown in Figure 5 is used when a reset of the PCA9626 needs to be performed by the master. The Software Reset address (SWRST Call) must be used with R/W = logic 0. If R/W = logic 1, the PCA9626 does not acknowledge the SWRST. See Section 7.6 "Software reset" for more detail. R/W 0 0 0 0 0 1 1 0 002aab416 Fig 5. Software Reset address Remark: The Software Reset I2C-bus address is a reserved address and cannot be used as a regular I2C-bus slave address or as an LED All Call or LED Sub Call address. PCA9626_2 (c) NXP B.V. 2009. All rights reserved. Product data sheet Rev. 02 -- 31 August 2009 8 of 47 NXP Semiconductors PCA9626 24-bit Fm+ I2C-bus 100 mA 40 V LED driver 7.2 Control register Following the successful acknowledgement of the slave address, LED All Call address or LED Sub Call address, the bus master will send a byte to the PCA9626, which will be stored in the Control register. The lowest 6 bits are used as a pointer to determine which register will be accessed (D[5:0]). The highest bit is used as Auto-Increment Flag (AIF). This bit along with the MODE1 register bit 5 and bit 6 provide the Auto-Increment feature. Bit 6 of the Control register is not used. register address AIF X D5 D4 D3 D2 D1 D0 Don't care Auto-Increment Flag 002aad610 reset state = 80h Remark: The Control register does not apply to the Software Reset I2C-bus address. Fig 6. Control register When the Auto-Increment Flag is set (AIF = logic 1), the six low order bits of the Control register are automatically incremented after a read or write. This allows the user to program the registers sequentially. Four different types of Auto-Increment are possible, depending on AI1 and AI0 values of MODE1 register. Table 3. AIF 0 1 1 1 1 0 0 0 1 1 Auto-Increment options AI1[1] AI0[1] 0 0 1 0 1 Function no Auto-Increment Auto-Increment for all registers. D[5:0] roll over to 0h after the last register 26h is accessed. Auto-Increment for individual brightness registers only. D[5:0] roll over to 2h after the last register (19h) is accessed. Auto-Increment for global control registers and CHASE register. D[5:0] roll over to 1Ah after the last register (1Ch) is accessed. Auto-Increment for individual brightness registers; global control registers and CHASE register. D[5:0] roll over to 2h after the last register (1Ch) is accessed. [1] AI1 and AI0 come from MODE1 register. Remark: Other combinations not shown in Table 3 (AIF + AI[1:0] = 001b, 010b, 011b and 111b) are reserved and must not be used for proper device operation. AIF + AI[1:0] = 000b is used when the same register must be accessed several times during a single I2C-bus communication, for example, changes the brightness of a single LED. Data is overwritten each time the register is accessed during a write operation. AIF + AI[1:0] = 100b is used when all the registers must be sequentially accessed, for example, power-up programming. PCA9626_2 (c) NXP B.V. 2009. All rights reserved. Product data sheet Rev. 02 -- 31 August 2009 9 of 47 NXP Semiconductors PCA9626 24-bit Fm+ I2C-bus 100 mA 40 V LED driver AIF + AI[1:0] = 101b is used when the 16 LED drivers must be individually programmed with different values during the same I2C-bus communication, for example, changing color setting to another color setting. AIF + AI[1:0] = 110b is used when the LED drivers must be globally programmed with different settings during the same I2C-bus communication, for example, global brightness or blinking change. AIF + AI[1:0] = 111b is used when the 16 LED drivers must be individually programmed with different values in addition to global programming. Only the 6 least significant bits D[5:0] are affected by the AIF, AI1 and AI0 bits. When the Control register is written, the register entry point determined by D[5:0] is the first register that will be addressed (read or write operation), and can be anywhere between 0h and 26h (as defined in Table 4). When AIF = 1, the Auto-Increment Flag is set and the rollover value at which the register increment stops and goes to the next one is determined by AIF, AI1 and AI2. See Table 3 for rollover values. For example, if MODE1 register bit AI1 = 0 and AI0 = 1 and if the Control register = 1001 0010, then the register addressing sequence will be (in hex): 20 21 ... 26 0 1 2 ... 19 02 03 ... 19 02 ... as long as the master keeps sending or reading data. 7.3 Register definitions Table 4. Register summary[1][2] D4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 D3 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 D2 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 D1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 D0 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 Name MODE1 MODE2 PWM0 PWM1 PWM2 PWM3 PWM4 PWM5 PWM6 PWM7 PWM8 PWM9 PWM10 PWM11 PWM12 PWM13 PWM14 PWM15 PWM16 PWM17 Type read/write read/write read/write read/write read/write read/write read/write read/write read/write read/write read/write read/write read/write read/write read/write read/write read/write read/write read/write read/write Function Mode register 1 Mode register 2 brightness control LED0 brightness control LED1 brightness control LED2 brightness control LED3 brightness control LED4 brightness control LED5 brightness control LED6 brightness control LED7 brightness control LED8 brightness control LED9 brightness control LED10 brightness control LED11 brightness control LED12 brightness control LED13 brightness control LED14 brightness control LED15 brightness control LED16 brightness control LED17 (c) NXP B.V. 2009. All rights reserved. Register number D5 (hex) 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10 11 12 13 PCA9626_2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Product data sheet Rev. 02 -- 31 August 2009 10 of 47 NXP Semiconductors PCA9626 24-bit Fm+ I2C-bus 100 mA 40 V LED driver Table 4. Register summary[1][2] ...continued D4 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 D3 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 D2 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 D1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 D0 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 Name PWM18 PWM19 PWM20 PWM21 PWM22 PWM23 GRPPWM GRPFREQ CHASE LEDOUT0 LEDOUT1 LEDOUT2 LEDOUT3 LEDOUT4 LEDOUT5 SUBADR1 SUBADR2 SUBADR3 ALLCALLADR Type read/write read/write read/write read/write read/write read/write read/write read/write read/write read/write read/write read/write read/write read/write read/write read/write read/write read/write read/write Function brightness control LED18 brightness control LED19 brightness control LED20 brightness control LED21 brightness control LED22 brightness control LED23 group duty cycle control group frequency chase control LED output state 0 LED output state 1 LED output state 2 LED output state 3 LED output state 4 LED output state 5 I2C-bus subaddress 1 I2C-bus subaddress 2 I2C-bus subaddress 3 LED All Call I2C-bus address Register number D5 (hex) 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F 20 21 22 23 24 25 26 [1] [2] 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 Only D[5:0] = 00 0000 to 10 0110 are allowed and will be acknowledged. D[5:0] = 10 0111 to 11 1111 are reserved and may not be acknowledged. When writing to the Control register, bit 6 should be programmed with logic 0 for proper device operation. PCA9626_2 (c) NXP B.V. 2009. All rights reserved. Product data sheet Rev. 02 -- 31 August 2009 11 of 47 NXP Semiconductors PCA9626 24-bit Fm+ I2C-bus 100 mA 40 V LED driver 7.3.1 Mode register 1, MODE1 Table 5. MODE1 - Mode register 1 (address 00h) bit description Legend: * default value. Bit 7 6 5 4 3 2 1 0 Symbol AI2 AI1 AI0 SLEEP SUB1 SUB2 SUB3 ALLCALL Access read only R/W R/W R/W R/W R/W R/W R/W Value 0 1* 0* 1 0* 1 0 1* 0* 1 0* 1 0* 1 0 1* [1] [2] Description Register Auto-Increment disabled. Register Auto-Increment enabled. Auto-Increment bit 1 = 0. Auto-increment range as defined in Table 3. Auto-Increment bit 1 = 1. Auto-increment range as defined in Table 3. Auto-Increment bit 0 = 0. Auto-increment range as defined in Table 3. Auto-Increment bit 0 = 1. Auto-increment range as defined in Table 3. Normal mode[1]. Low power mode. Oscillator off[2]. PCA9626 does not respond to I2C-bus subaddress 1. PCA9626 responds to I2C-bus subaddress 1. PCA9626 does not respond to I2C-bus subaddress 2. PCA9626 responds to I2C-bus subaddress 2. PCA9626 does not respond to I2C-bus subaddress 3. PCA9626 responds to I2C-bus subaddress 3. PCA9626 does not respond to LED All Call I2C-bus address. PCA9626 responds to LED All Call I2C-bus address. It takes 500 s max. for the oscillator to be up and running once SLEEP bit has been set to logic 1. Timings on LEDn outputs are not guaranteed if PWMx, GRPPWM or GRPFREQ registers are accessed within the 500 s window. No blinking or dimming is possible when the oscillator is off. 7.3.2 Mode register 2, MODE2 Table 6. MODE2 - Mode register 2 (address 01h) bit description Legend: * default value. Bit 7 6 5 4 3 2 1 0 [1] Symbol DMBLNK INVRT OCH - Access read only read only R/W read only R/W read only read only read only Value 0* 0* 0* 1 0* 0* 1 1* 0* 1* Description reserved reserved group control = dimming. group control = blinking. reserved outputs change on STOP command[1] outputs change on ACK reserved reserved reserved Change of the outputs at the STOP command allows synchronizing outputs of more than one PCA9626. Applicable to registers from 02h (PWM0) to 08h (LEDOUT) only. PCA9626_2 (c) NXP B.V. 2009. All rights reserved. Product data sheet Rev. 02 -- 31 August 2009 12 of 47 NXP Semiconductors PCA9626 24-bit Fm+ I2C-bus 100 mA 40 V LED driver 7.3.3 PWM0 to PWM23, individual brightness control Table 7. PWM0 to PWM23 - PWM registers 0 to 23 (address 02h to 19h) bit description Legend: * default value. Address 02h 03h 04h 05h 06h 07h 08h 09h 0Ah 0Bh 0Ch 0Dh 0Eh 0Fh 10h 11h 12h 13h 14h 15h 16h 17h 18h 19h Register PWM0 PWM1 PWM2 PWM3 PWM4 PWM5 PWM6 PWM7 PWM8 PWM9 PWM10 PWM11 PWM12 PWM13 PWM14 PWM15 PWM16 PWM17 PWM18 PWM19 PWM20 PWM21 PWM22 PWM23 Bit 7:0 7:0 7:0 7:0 7:0 7:0 7:0 7:0 7:0 7:0 7:0 7:0 7:0 7:0 7:0 7:0 7:0 7:0 7:0 7:0 7:0 7:0 7:0 7:0 Symbol IDC0[7:0] IDC1[7:0] IDC2[7:0] IDC3[7:0] IDC4[7:0] IDC5[7:0] IDC6[7:0] IDC7[7:0] IDC8[7:0] IDC9[7:0] IDC10[7:0] IDC11[7:0] IDC12[7:0] IDC13[7:0] IDC14[7:0] IDC15[7:0] IDC16[7:0] IDC17[7:0] IDC18[7:0] IDC19[7:0] IDC20[7:0] IDC21[7:0] IDC22[7:0] IDC23[7:0] Access Value R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W Description 0000 0000* PWM0 Individual Duty Cycle 0000 0000* PWM1 Individual Duty Cycle 0000 0000* PWM2 Individual Duty Cycle 0000 0000* PWM3 Individual Duty Cycle 0000 0000* PWM4 Individual Duty Cycle 0000 0000* PWM5 Individual Duty Cycle 0000 0000* PWM6 Individual Duty Cycle 0000 0000* PWM7 Individual Duty Cycle 0000 0000* PWM8 Individual Duty Cycle 0000 0000* PWM9 Individual Duty Cycle 0000 0000* PWM10 Individual Duty Cycle 0000 0000* PWM11 Individual Duty Cycle 0000 0000* PWM12 Individual Duty Cycle 0000 0000* PWM13 Individual Duty Cycle 0000 0000* PWM14 Individual Duty Cycle 0000 0000* PWM15 Individual Duty Cycle 0000 0000* PWM16 Individual Duty Cycle 0000 0000* PWM17 Individual Duty Cycle 0000 0000* PWM18 Individual Duty Cycle 0000 0000* PWM19 Individual Duty Cycle 0000 0000* PWM20 Individual Duty Cycle 0000 0000* PWM21 Individual Duty Cycle 0000 0000* PWM22 Individual Duty Cycle 0000 0000* PWM23 Individual Duty Cycle A 97 kHz fixed frequency signal is used for each output. Duty cycle is controlled through 256 linear steps from 00h (0 % duty cycle = LED output off) to FFh (99.6 % duty cycle = LED output at maximum brightness). Applicable to LED outputs programmed with LDRx = 10 or 11 (LEDOUT0 to LEDOUT5 registers). IDCx [ 7:0 ] duty cycle = -------------------------256 (1) PCA9626_2 (c) NXP B.V. 2009. All rights reserved. Product data sheet Rev. 02 -- 31 August 2009 13 of 47 NXP Semiconductors PCA9626 24-bit Fm+ I2C-bus 100 mA 40 V LED driver 7.3.4 GRPPWM, group duty cycle control Table 8. GRPPWM - Group brightness control register (address 1Ah) bit description Legend: * default value Address 1Ah Register GRPPWM Bit 7:0 Symbol GDC[7:0] Access R/W Value 1111 1111 Description GRPPWM register When DMBLNK bit (MODE2 register) is programmed with logic 0, a 190 Hz fixed frequency signal is superimposed with the 97 kHz individual brightness control signal. GRPPWM is then used as a global brightness control allowing the LED outputs to be dimmed with the same value. The value in GRPFREQ is then a `Don't care'. General brightness for the 16 outputs is controlled through 256 linear steps from 00h (0 % duty cycle = LED output off) to FFh (99.6 % duty cycle = maximum brightness). Applicable to LED outputs programmed with LDRx = 11 (LEDOUT0 to LEDOUT5 registers). When DMBLNK bit is programmed with logic 1, GRPPWM and GRPFREQ registers define a global blinking pattern, where GRPFREQ contains the blinking period (from 24 Hz to 10.73 s) and GRPPWM the duty cycle (ON/OFF ratio in %). GDC [ 7:0 ] duty cycle = -------------------------256 (2) 7.3.5 GRPFREQ, group frequency Table 9. GRPFREQ - Group Frequency register (address 1Bh) bit description Legend: * default value. Address 1Bh Register GRPFREQ Bit 7:0 Symbol GFRQ[7:0] Access R/W Value 0000 0000* Description GRPFREQ register GRPFREQ is used to program the global blinking period when DMBLNK bit (MODE2 register) is equal to 1. Value in this register is a `Don't care' when DMBLNK = 0. Applicable to LED outputs programmed with LDRx = 11 (LEDOUT0 to LEDOUT5 registers). Blinking period is controlled through 256 linear steps from 00h (41 ms, frequency 24 Hz) to FFh (10.73 s). GFRQ [ 7:0 ] + 1 global blinking period = --------------------------------------- ( s ) 24 (3) PCA9626_2 (c) NXP B.V. 2009. All rights reserved. Product data sheet Rev. 02 -- 31 August 2009 14 of 47 NXP Semiconductors PCA9626 24-bit Fm+ I2C-bus 100 mA 40 V LED driver 7.3.6 CHASE control Table 10. CHASE - Chase pattern control register (address 1Ch) bit description Legend: * default value. Address 1Ch Register CHASE Bit 7:0 Symbol CHC[7:0] Access R/W Value 0000 0000* Description CHASE register CHASE is used to program the LED output ON/OFF pattern. The contents of the CHASE register is used to enable one of the LED output patterns, as indicated in Table 11. By repeated, sequential access to this table via the CHASE register, a chase pattern, e.g., marquee effect, can be easily programmed with minimal number of commands. Once the CHASE register is accessed, the data bytes that follow will be used as an index value to pick the LED output patterns defined by Table 11 "CHASE sequence". This register always updates on ACK. It is used to gate the OE signal at each of the LEDn pins such that: * OE = 1: all LEDs are off * OE = 0: those LEDs corresponding to the `X's in Table 11 are on Any write to this register takes effect at the ACK. PCA9626_2 (c) NXP B.V. 2009. All rights reserved. Product data sheet Rev. 02 -- 31 August 2009 15 of 47 xxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxx x x x xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxx xx xx xxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxx xxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxx x x xxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxx xxx Product data sheet Rev. 02 -- 31 August 2009 (c) NXP B.V. 2009. All rights reserved. PCA9626_2 NXP Semiconductors Table 11. CHASE sequence X = enabled; empty cell = disabled. Command Hex LED channel 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10 11 12 13 14 15 16 17 18 19 1A 1B X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X all LEDs ON all LEDs OFF 1 1 1 1 1 2 2 3 3 3 Description chase B chase A chase C chase B chase A LTR_0_ON (1x Left to Right_START) LTR_1_ON LTR_2_ON LTR_3_ON LTR_4_ON LTR_5_ON LTR_6_ON LTR_7_ON 24-bit Fm+ I2C-bus 100 mA 40 V LED driver LTR_8_ON LTR_9_ON LTR_10_ON LTR_11_ON LTR_12_ON LTR_13_ON LTR_14_ON LTR_15_ON LTR_16_ON LTR_17_ON LTR_18_ON LTR_19_ON LTR_20_ON PCA9626 16 of 47 xxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxx x x x xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxx xx xx xxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxx xxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxx x x xxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxx xxx Table 11. CHASE sequence ...continued X = enabled; empty cell = disabled. Command Hex LED channel 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 28 29 30 31 32 33 34 35 36 Rev. 02 -- 31 August 2009 (c) NXP B.V. 2009. All rights reserved. Product data sheet 17 of 47 PCA9626_2 NXP Semiconductors Description X X X LTR_21_ON LTR_22_ON LTR_23_ON (1x Left to Right_END) 2x Left to Right_START 1C 1D 1E 1F 20 21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F 30 31 32 33 34 35 36 37 X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 X X X 2x Left to Right_END 3x Left to Right_START 24-bit Fm+ I2C-bus 100 mA 40 V LED driver X X X 3x Left to Right_END 4x Left to Right_START PCA9626 xxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxx x x x xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxx xx xx xxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxx xxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxx x x xxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxx xxx Table 11. CHASE sequence ...continued X = enabled; empty cell = disabled. Command Hex LED channel 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 (c) NXP B.V. 2009. All rights reserved. Product data sheet Rev. 02 -- 31 August 2009 18 of 47 PCA9626_2 NXP Semiconductors Description X X X X 4x Left to Right_END 5x Left to Right_START X X X X X X X X X X X X X X X X X X X 5x Left to Right_END 6x Left to Right_START X X X X X X X X X X X X X X X X X X X X 6x Left to Right_END 1x Implode_START 38 39 3A 3B 3C 3D 3E 3F 40 41 42 43 44 45 46 47 48 49 4A 4B 4C 4D 4E 4F 50 51 52 53 54 X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X 24-bit Fm+ I2C-bus 100 mA 40 V LED driver 1x Implode_END X X X X 2x Implode_START PCA9626 80 81 82 83 84 2x Implode_END xxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxx x x x xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxx xx xx xxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxx xxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxx x x xxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxx xxx Table 11. CHASE sequence ...continued X = enabled; empty cell = disabled. Command Hex LED channel 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 (c) NXP B.V. 2009. All rights reserved. Product data sheet Rev. 02 -- 31 August 2009 19 of 47 PCA9626_2 NXP Semiconductors Description X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X 4x Implode_END Left to Right_WIPE_START X X X X X X X X X X X 3x Implode_END 4x Implode_START X X X X X X X X X 3x Implode_START 55 56 57 58 59 5A 5B 5C 5D 5E 5F 60 61 62 63 64 65 66 67 68 69 6A 6B 6C 6D 6E 6F 70 71 X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X 24-bit Fm+ I2C-bus 100 mA 40 V LED driver X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X PCA9626 109 110 111 112 113 xxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxx x x x xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxx xx xx xxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxx xxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxx x x xxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxx xxx Table 11. CHASE sequence ...continued X = enabled; empty cell = disabled. Command Hex LED channel 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 (c) NXP B.V. 2009. All rights reserved. Product data sheet Rev. 02 -- 31 August 2009 20 of 47 PCA9626_2 NXP Semiconductors Description X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X Left to Right_WIPE_END Right to Left_WIPE_START 72 73 74 75 76 77 78 79 7A 7B 7C 7D 7E 7F 80 81 82 83 84 85 86 87 88 89 8A 8B 8C 8D X X X X X X X X X X X X X X X X X X 24-bit Fm+ I2C-bus 100 mA 40 V LED driver X X X X X X X X X X X X PCA9626 138 139 140 141 X X xxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxx x x x xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxx xx xx xxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxx xxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxx x x xxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxx xxx Table 11. CHASE sequence ...continued X = enabled; empty cell = disabled. Command Hex LED channel 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 142 143 144 8E 8F 90 X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X Right to Left_WIPE_END All LED outputs disabled for CHASE byte = 90h to FFh. Reserved for future use. CHASE byte = FFh is used to exit the CHASE mode.[1] Description Product data sheet Rev. 02 -- 31 August 2009 (c) NXP B.V. 2009. All rights reserved. PCA9626_2 NXP Semiconductors [1] When the PCA9626 exits from the CHASE mode, the previous states of the LED outputs will be retained. 24-bit Fm+ I2C-bus 100 mA 40 V LED driver PCA9626 21 of 47 NXP Semiconductors PCA9626 24-bit Fm+ I2C-bus 100 mA 40 V LED driver 7.3.7 LEDOUT0 to LEDOUT5, LED driver output state LEDOUT0 to LEDOUT5 - LED driver output state register (address 1Dh to 22h) bit description Legend: * default value. Address 1Dh Register LEDOUT0 Bit 7:6 5:4 3:2 1:0 1Eh LEDOUT1 7:6 5:4 3:2 1:0 1Fh LEDOUT2 7:6 5:4 3:2 1:0 20h LEDOUT3 7:6 5:4 3:2 1:0 21h LEDOUT4 7:6 5:4 3:2 1:0 22h LEDOUT5 7:6 5:4 3:2 1:0 Symbol LDR3 LDR2 LDR1 LDR0 LDR7 LDR6 LDR5 LDR4 LDR11 LDR10 LDR9 LDR8 LDR15 LDR14 LDR13 LDR12 LDR19 LDR18 LDR17 LDR16 LDR23 LDR22 LDR21 LDR20 Access R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W Value 00* 00* 00* 00* 00* 00* 00* 00* 00* 00* 00* 00* 00* 00* 00* 00* 00* 00* 00* 00* 00* 00* 00* 00* Description LED3 output state control LED2 output state control LED1 output state control LED0 output state control LED7 output state control LED6 output state control LED5 output state control LED4 output state control LED11 output state control LED10 output state control LED9 output state control LED8 output state control LED15 output state control LED14 output state control LED13 output state control LED12 output state control LED19 output state control LED18 output state control LED17 output state control LED16 output state control LED23 output state control LED22 output state control LED21 output state control LED20 output state control Table 12. LDRx = 00 -- LED driver x is off (default power-up state). LDRx = 01 -- LED driver x is fully on (individual brightness and group dimming/blinking not controlled). LDRx = 10 -- LED driver x individual brightness can be controlled through its PWMx register. LDRx = 11 -- LED driver x individual brightness and group dimming/blinking can be controlled through its PWMx register and the GRPPWM registers. PCA9626_2 (c) NXP B.V. 2009. All rights reserved. Product data sheet Rev. 02 -- 31 August 2009 22 of 47 NXP Semiconductors PCA9626 24-bit Fm+ I2C-bus 100 mA 40 V LED driver 7.3.8 SUBADR1 to SUBADR3, I2C-bus subaddress 1 to 3 SUBADR1 to SUBADR3 - I2C-bus subaddress registers 0 to 3 (address 23h to 25h) bit description Legend: * default value. Table 13. Address 23h 24h 25h Register SUBADR1 SUBADR2 SUBADR3 Bit 7:1 0 7:1 0 7:1 0 Symbol A1[7:1] A1[0] A2[7:1] A2[0] A3[7:1] A3[0] Access Value R/W R only R/W R only R/W R only 1110 001* 0* 1110 010* 0* 1110 100* 0* Description I2C-bus subaddress 1 reserved I2C-bus subaddress 2 reserved I2C-bus subaddress 3 reserved Subaddresses are programmable through the I2C-bus. Default power-up values are E2h, E4h, E8h, and the device(s) will not acknowledge these addresses right after power-up (the corresponding SUBx bit in MODE1 register is equal to 0). Once subaddresses have been programmed to their right values, SUBx bits need to be set to logic 1 in order to have the device acknowledging these addresses (MODE1 register). Only the 7 MSBs representing the I2C-bus subaddress are valid. The LSB in SUBADRx register is a read-only bit (0). When SUBx is set to logic 1, the corresponding I2C-bus subaddress can be used during either an I2C-bus read or write sequence. 7.3.9 ALLCALLADR, LED All Call I2C-bus address ALLCALLADR - LED All Call I2C-bus address register (address 26h) bit description Legend: * default value. Table 14. Address 26h Register ALLCALLADR Bit 7:1 0 Symbol AC[7:1] AC[0] Access Value R/W R only 1110 000* 0* Description ALLCALL I2C-bus address register reserved The LED All Call I2C-bus address allows all the PCA9626s on the bus to be programmed at the same time (ALLCALL bit in register MODE1 must be equal to logic 1 (power-up default state)). This address is programmable through the I2C-bus and can be used during either an I2C-bus read or write sequence. The register address can also be programmed as a Sub Call. Only the 7 MSBs representing the All Call I2C-bus address are valid. The LSB in ALLCALLADR register is a read-only bit (0). If ALLCALL bit = 0, the device does not acknowledge the address programmed in register ALLCALLADR. PCA9626_2 (c) NXP B.V. 2009. All rights reserved. Product data sheet Rev. 02 -- 31 August 2009 23 of 47 NXP Semiconductors PCA9626 24-bit Fm+ I2C-bus 100 mA 40 V LED driver 7.4 Active LOW output enable input The active LOW output enable (OE) pin, allows to enable or disable all the LED outputs at the same time. * When a LOW level is applied to OE pin, all the LED outputs are enabled as defined by the CHASE register. * When a HIGH level is applied to OE pin, all the LED outputs are high-impedance. The OE pin can be used as a synchronization signal to switch on/off several PCA9626 devices at the same time. This requires an external clock reference that provides blinking period and the duty cycle. The OE pin can also be used as an external dimming control signal. The frequency of the external clock must be high enough not to be seen by the human eye, and the duty cycle value determines the brightness of the LEDs. Remark: Do not use OE as an external blinking control signal when internal global blinking is selected (DMBLNK = 1, MODE2 register) since it will result in an undefined blinking pattern. Do not use OE as an external dimming control signal when internal global dimming is selected (DMBLNK = 0, MODE2 register) since it will result in an undefined dimming pattern. Remark: During power-down, slow decay of voltage supplies may keep LEDs illuminated. Consider disabling LED outputs using HIGH level applied to OE pin. 7.5 Power-on reset When power is applied to VDD, an internal power-on reset holds the PCA9626 in a reset condition until VDD has reached VPOR. At this point, the reset condition is released and the PCA9626 registers and I2C-bus state machine are initialized to their default states (all zeroes) causing all the channels to be deselected. Thereafter, VDD must be lowered below 0.2 V to reset the device. 7.6 Software reset The Software Reset Call (SWRST Call) allows all the devices in the I2C-bus to be reset to the power-up state value through a specific formatted I2C-bus command. To be performed correctly, it implies that the I2C-bus is functional and that there is no device hanging the bus. The SWRST Call function is defined as the following: 1. A START command is sent by the I2C-bus master. 2. The reserved SWRST I2C-bus address `0000 011' with the R/W bit set to `0' (write) is sent by the I2C-bus master. 3. The PCA9626 device(s) acknowledge(s) after seeing the SWRST Call address `0000 0110' (06h) only. If the R/W bit is set to `1' (read), no acknowledge is returned to the I2C-bus master. 4. Once the SWRST Call address has been sent and acknowledged, the master sends 2 bytes with 2 specific values (SWRST data byte 1 and byte 2): a. Byte 1 = A5h: the PCA9626 acknowledges this value only. If byte 1 is not equal to A5h, the PCA9626 does not acknowledge it. PCA9626_2 (c) NXP B.V. 2009. All rights reserved. Product data sheet Rev. 02 -- 31 August 2009 24 of 47 NXP Semiconductors PCA9626 24-bit Fm+ I2C-bus 100 mA 40 V LED driver b. Byte 2 = 5Ah: the PCA9626 acknowledges this value only. If byte 2 is not equal to 5Ah, then the PCA9626 does not acknowledge it. If more than 2 bytes of data are sent, the PCA9626 does not acknowledge any more. 5. Once the right 2 bytes (SWRST data byte 1 and byte 2 only) have been sent and correctly acknowledged, the master sends a STOP command to end the SWRST Call: the PCA9626 then resets to the default value (power-up value) and is ready to be addressed again within the specified bus free time (tBUF). The I2C-bus master must interpret a non-acknowledge from the PCA9626 (at any time) as a `SWRST Call Abort'. The PCA9626 does not initiate a reset of its registers. This happens only when the format of the SWRST Call sequence is not correct. 7.7 Individual brightness control with group dimming/blinking A 97 kHz fixed frequency signal with programmable duty cycle (8 bits, 256 steps) is used to control individually the brightness for each LED. On top of this signal, one of the following signals can be superimposed (this signal can be applied to the 4 LED outputs): * A lower 190 Hz fixed frequency signal with programmable duty cycle (8 bits, 256 steps) is used to provide a global brightness control. * A programmable frequency signal from 24 Hz to 110.73 Hz (8 bits, 256 steps) with programmable duty cycle (8 bits, 256 steps) is used to provide a global blinking control. 1 2 3 4 5 6 7 8 9 10 11 12 507 508 509 510 511 512 1 2 3 4 5 6 7 8 9 10 11 Brightness Control signal (LEDn) N x 40 ns with N = (0 to 255) (PWMx Register) 256 x 40 ns = 10.24 s (97.6 kHz) M x 256 x 2 x 40 ns with M = (0 to 255) (GRPPWM Register) Group Dimming signal 256 x 2 x 256 x 40 ns = 5.24 ms (190.7 Hz) 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 resulting Brightness + Group Dimming signal 002aab417 Minimum pulse width for LEDn Brightness Control is 40 ns. Minimum pulse width for Group Dimming is 20.48 s. When M = 1 (GRPPWM register value), the resulting LEDn Brightness Control + Group Dimming signal will have 2 pulses of the LED Brightness Control signal (pulse width = N x 40 ns, with `N' defined in PWMx register). This resulting Brightness + Group Dimming signal above shows a resulting Control signal with M = 4 (8 pulses). Fig 7. Brightness + Group Dimming signals PCA9626_2 (c) NXP B.V. 2009. All rights reserved. Product data sheet Rev. 02 -- 31 August 2009 25 of 47 NXP Semiconductors PCA9626 24-bit Fm+ I2C-bus 100 mA 40 V LED driver 8. Characteristics of the I2C-bus The I2C-bus is for 2-way, 2-line communication between different ICs or modules. The two lines are a serial data line (SDA) and a serial clock line (SCL). Both lines must be connected to a positive supply via a pull-up resistor when connected to the output stages of a device. Data transfer may be initiated only when the bus is not busy. 8.1 Bit transfer One data bit is transferred during each clock pulse. The data on the SDA line must remain stable during the HIGH period of the clock pulse as changes in the data line at this time will be interpreted as control signals (see Figure 8). SDA SCL data line stable; data valid change of data allowed mba607 Fig 8. Bit transfer 8.1.1 START and STOP conditions Both data and clock lines remain HIGH when the bus is not busy. A HIGH-to-LOW transition of the data line while the clock is HIGH is defined as the START condition (S). A LOW-to-HIGH transition of the data line while the clock is HIGH is defined as the STOP condition (P) (see Figure 9). SDA SCL S START condition P STOP condition mba608 Fig 9. Definition of START and STOP conditions 8.2 System configuration A device generating a message is a `transmitter'; a device receiving is the `receiver'. The device that controls the message is the `master' and the devices which are controlled by the master are the `slaves' (see Figure 10). PCA9626_2 (c) NXP B.V. 2009. All rights reserved. Product data sheet Rev. 02 -- 31 August 2009 26 of 47 NXP Semiconductors PCA9626 24-bit Fm+ I2C-bus 100 mA 40 V LED driver SDA SCL MASTER TRANSMITTER/ RECEIVER SLAVE RECEIVER SLAVE TRANSMITTER/ RECEIVER MASTER TRANSMITTER MASTER TRANSMITTER/ RECEIVER I2C-BUS MULTIPLEXER SLAVE 002aaa966 Fig 10. System configuration 8.3 Acknowledge The number of data bytes transferred between the START and the STOP conditions from transmitter to receiver is not limited. Each byte of eight bits is followed by one acknowledge bit. The acknowledge bit is a HIGH level put on the bus by the transmitter, whereas the master generates an extra acknowledge related clock pulse. A slave receiver which is addressed must generate an acknowledge after the reception of each byte. Also a master must generate an acknowledge after the reception of each byte that has been clocked out of the slave transmitter. The device that acknowledges has to pull down the SDA line during the acknowledge clock pulse, so that the SDA line is stable LOW during the HIGH period of the acknowledge related clock pulse; set-up time and hold time must be taken into account. A master receiver must signal an end of data to the transmitter by not generating an acknowledge on the last byte that has been clocked out of the slave. In this event, the transmitter must leave the data line HIGH to enable the master to generate a STOP condition. data output by transmitter not acknowledge data output by receiver acknowledge SCL from master S START condition 1 2 8 clock pulse for acknowledgement 002aaa987 9 Fig 11. Acknowledgement on the I2C-bus PCA9626_2 (c) NXP B.V. 2009. All rights reserved. Product data sheet Rev. 02 -- 31 August 2009 27 of 47 NXP Semiconductors PCA9626 24-bit Fm+ I2C-bus 100 mA 40 V LED driver 9. Bus transactions data for register D[5:0](1) A acknowledge from slave STOP condition 002aad612 slave address S A6 A5 A4 A3 A2 A1 A0 0 START condition R/W A X control register X D5 D4 D3 D2 D1 D0 A P Auto-Increment flag acknowledge from slave acknowledge from slave (1) See Table 4 for register definition. Fig 12. Write to a specific register slave address S A6 A5 A4 A3 A2 A1 A0 0 START condition R/W acknowledge from slave SUBADR3 register (cont.) A acknowledge from slave A 1 X control register 0 0 0 0 0 0 A MODE1 register A acknowledge from slave MODE2 register A acknowledge from slave (cont.) MODE1 register selection Auto-Increment on acknowledge from slave ALLCALLADR register A acknowledge from slave STOP condition 002aad613 P Fig 13. Write to all registers using the Auto-Increment feature PCA9626_2 (c) NXP B.V. 2009. All rights reserved. Product data sheet Rev. 02 -- 31 August 2009 28 of 47 xxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxx x x x xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxx xx xx xxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxx xxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxx x x xxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxx xxx Product data sheet Rev. 02 -- 31 August 2009 (c) NXP B.V. 2009. All rights reserved. PCA9626_2 NXP Semiconductors slave address S A6 A5 A4 A3 A2 A1 A0 0 START condition R/W acknowledge from slave PWM22 register data (cont.) A acknowledge from slave A 1 X control register 0 0 0 0 1 0 A PWM0 register data A acknowledge from slave PWM1 register data A acknowledge from slave (cont.) PWM0 register selection Auto-Increment on acknowledge from slave register rollover PWM23 register data PWM0 register data A acknowledge from slave A acknowledge from slave PWM22 register data A acknowledge from slave PWM23 register data A acknowledge from slave P 24-bit Fm+ I2C-bus 100 mA 40 V LED driver STOP condition 002aad614 PCA9626 29 of 47 This example assumes that AIF + AI[1:0] = 101b. Fig 14. Multiple writes to Individual Brightness registers only using the Auto-Increment feature NXP Semiconductors PCA9626 24-bit Fm+ I2C-bus 100 mA 40 V LED driver slave address S A6 A5 A4 A3 A2 A1 A0 0 START condition R/W acknowledge from slave data from MODE2 register (cont.) A A 1 X control register 0 0 0 0 0 0 ReSTART condition slave address A data from MODE1 register A (cont.) acknowledge from master A Sr A6 A5 A4 A3 A2 A1 A0 1 acknowledge from slave R/W MODE1 register selection Auto-Increment on acknowledge from slave data from MODE1 register A data from PWM0 A data from ALLCALLADR register A (cont.) acknowledge from master data from last read byte (cont.) A P acknowledge from master acknowledge from master acknowledge from master not acknowledge from master STOP condition 002aad615 This example assumes that the MODE1[5] = 0 and MODE1[6] = 0. Fig 15. Read all registers using the Auto-Increment feature slave address(1) sequence (A) S A6 A5 A4 A3 A2 A1 A0 0 START condition R/W acknowledge from slave A 1 X control register 1 0 0 1 1 0 A new LED All Call I2C address(2) 1 0 1 0 1 0 1 X A P ALLCALLADR register selection Auto-Increment on acknowledge from slave acknowledge from slave STOP condition the 16 LEDs are on at the acknowledge(3) LED All Call I2C address sequence (B) S 1 0 1 0 1 0 1 0 R/W acknowledge from the 4 devices A X X control register X 0 1 0 0 0 A LEDOUT register (LED fully ON) 0 1 0 1 0 1 0 1 A P START condition LEDOUT register selection acknowledge from the 4 devices acknowledge from the 4 devices STOP condition 002aad616 (1) In this example, several PCA9626s are used and the same sequence (A) (above) is sent to each of them. (2) ALLCALL bit in MODE1 register is previously set to 1 for this example. (3) OCH bit in MODE2 register is previously set to 1 for this example. Fig 16. LED All Call I2C-bus address programming and LED All Call sequence example PCA9626_2 (c) NXP B.V. 2009. All rights reserved. Product data sheet Rev. 02 -- 31 August 2009 30 of 47 NXP Semiconductors PCA9626 24-bit Fm+ I2C-bus 100 mA 40 V LED driver 10. Application design-in information up to 40 V VDD = 2.5 V, 3.3 V or 5.0 V I2C-BUS/SMBus MASTER SDA SCL 10 k 10 k 10 k(1) VDD SDA SCL LED0 LED1 LED2 OE OE LED3 PCA9626 LED4 LED5 LED6 LED7 LED light bar up to 40 V LED light bar LED8 LED9 LED10 LED11 LED light bar LED12 LED13 LED14 LED15 LED light bar LED16 LED17 LED18 A0 A1 A2 A3 A4 A5 A6 VSS VSS LED22 LED23 LED20 LED21 LED19 LED light bar up to 40 V up to 40 V up to 40 V up to 40 V 002aad607 (1) OE requires pull-up resistor if control signal from the master is open-drain. I2C-bus address = 0010 101x. Remark: During power-down, slow decay of voltage supplies may keep LEDs illuminated. Consider disabling LED outputs using HIGH level applied to OE pin. Fig 17. Typical application PCA9626_2 (c) NXP B.V. 2009. All rights reserved. Product data sheet Rev. 02 -- 31 August 2009 31 of 47 NXP Semiconductors PCA9626 24-bit Fm+ I2C-bus 100 mA 40 V LED driver 10.1 Junction temperature calculation A device junction temperature can be calculated when the ambient temperature or the case temperature is known. When the ambient temperature is known, the junction temperature is calculated using Equation 4 and the ambient temperature, junction to ambient thermal resistance and power dissipation. T j = T amb + R th ( j-a ) x P tot where: Tj = junction temperature Tamb = ambient temperature Rth(j-a) = junction to ambient thermal resistance Ptot = (device) total power dissipation When the case temperature is known, the junction temperature is calculated using Equation 5 and the case temperature, junction to case thermal resistance and power dissipation. T j = T case + R th ( j-c ) x P tot where: Tj = junction temperature Tcase = case temperature Rth(j-c) = junction to case thermal resistance Ptot = (device) total power dissipation Here are two examples regarding how to calculate the junction temperature using junction to case and junction to ambient thermal resistance. In the first example (Section 10.1.1), given the operating condition and the junction to ambient thermal resistance, the junction temperature of PCA9626B, in the LQFP48 package, is calculated for a system operating condition in 50 C1 ambient temperature. In the second example (Section 10.1.2), based on a specific customer application requirement where only the case temperature is known, applying the junction to case thermal resistance equation, the junction temperature of the PCA9626B, in the LQFP48 package, is calculated. (5) (4) 1. 50 C is a typical temperature inside an enclosed system. The designers should feel free, as needed, to perform their own calculation using the examples. (c) NXP B.V. 2009. All rights reserved. PCA9626_2 Product data sheet Rev. 02 -- 31 August 2009 32 of 47 NXP Semiconductors PCA9626 24-bit Fm+ I2C-bus 100 mA 40 V LED driver 10.1.1 Example 1: Tj calculation when Tamb is known (PCA9626B, LQFP48) Rth(j-a) = 63 C/W Tamb = 50 C LED output low voltage (LED VOL) = 0.5 V LED output current per channel = 80 mA Number of outputs = 24 IDD(max) = 18 mA VDD(max) = 5.5 V I2C-bus clock (SCL) maximum sink current = 25 mA I2C-bus data (SDA) maximum sink current = 25 mA 1. Find Ptot (device total power dissipation): - output total power = 30 mA x 24 x 0.5 V = 960 mW - chip core power consumption = 18 mA x 5.5 V = 99 mW - SCL power dissipation = 25 mA 0.4 V = 10 mW - SDA power dissipation = 25 mA 0.4 V = 10 mW Ptot = (960 + 99 + 10 + 10) mW = 1079 mW 2. Find Tj (junction temperature): Tj = (Tamb + Rth(j-a) x Ptot) = (50 C + 63 C/W x 1079 mW) = 118 C 10.1.2 Example 2: Tj calculation where only Tcase is known This example uses a customer's specific application of the PCA9626B, 24-channel LED controller in the LQFP48 package, where only the case temperature (Tcase) is known. Tj = Tcase + Rth(j-c) x Ptot, where: Rth(j-c) = 18 C/W Tcase (measured) = 94.6 C VOL of LED ~ 0.5 V IDD(max) = 18 mA VDD(max) = 5.5 V LED output voltage LOW = 0.5 V LED output current: 60 mA on 1 port = (60 mA x 1) 50 mA on 6 ports = (50 mA x 6) 40 mA on 2 ports = (40 mA x 2) 20 mA on 12 ports = (20 mA x 12) 1 mA on 3 ports = (1 mA x 3) I2C-bus maximum sink current on clock line = 25 mA I2C-bus maximum sink current on data line = 25 mA PCA9626_2 (c) NXP B.V. 2009. All rights reserved. Product data sheet Rev. 02 -- 31 August 2009 33 of 47 NXP Semiconductors PCA9626 24-bit Fm+ I2C-bus 100 mA 40 V LED driver 1. Find Ptot (device total power dissipation) - output current (60 mA x 1 port); output power (60 mA x 1 x 0.5 V) = 30 mW - output current (50 mA x 6 ports); output power (50 mA x 6 x 0.5 V) = 150 mW - output current (40 mA x 2 ports); output power (40 mA x 2 x 0.5 V) = 40 mW - output current (20 mA x 12 ports); output power (20 mA x 12 x 0.5 V) = 120 mW - output current (1 mA x 3 ports); output power (1 mA x 3 x 0.5 V) = 1.5 mW Output total power = 341.5 mW - chip core power consumption = 18 mA x 5.5 V = 99 mW - SCL power dissipation = 25 mA x 0.4 V = 10 mW - SDA power dissipation = 25 mA x 0.4 V = 10 mW Ptot (device total power dissipation) = 460.5 mW 2. Find Tj (junction temperature): Tj = Tcase + Rth(j-a) x Ptot = 94.6 C + 18 C/W x 460.5 mW = 102.9 C 11. Limiting values Table 15. Limiting values In accordance with the Absolute Maximum Rating System (IEC 60134). Symbol VDD VI/O Vdrv(LED) IO(LEDn) IOL(tot) ISS Ptot P/ch Tj Tstg Tamb [1] [2] Parameter supply voltage voltage on an input/output pin LED driver voltage output current on pin LEDn total LOW-level output current ground supply current total power dissipation power dissipation per channel junction temperature storage temperature ambient temperature Conditions Min -0.5 VSS - 0.5 VSS - 0.5 - Max +6.0 5.5 40 100 800 1.8 0.72 100 45 +125 +150 +85 Unit V V V mA mA mA W W mW mW C C C LED driver outputs; VOL = 0.5 V per VSS pin Tamb = 25 C Tamb = 85 C Tamb = 25 C Tamb = 85 C [1] 2400 - [2] -65 -40 operating Each bit must be limited to a maximum of 100 mA and the total package limited to 2400 mA due to internal busing limits. Refer to Section 10.1 for calculation. PCA9626_2 (c) NXP B.V. 2009. All rights reserved. Product data sheet Rev. 02 -- 31 August 2009 34 of 47 NXP Semiconductors PCA9626 24-bit Fm+ I2C-bus 100 mA 40 V LED driver LQFP48 versus HVQFN48 power dissipation and output current capability LQFP48 1590 mW HVQFN48 2780 mW Table 16. Measurement Tamb = 25 C maximum power dissipation (chip + output drivers) maximum power dissipation (output drivers only) maximum drive current per channel Tamb = 60 C maximum power dissipation (chip + output drivers) maximum power dissipation (output drivers only) maximum drive current per channel Tamb = 80 C maximum power dissipation (chip + output drivers) maximum power dissipation (output drivers only) maximum drive current per channel [1] 1460 mW 2650 mW 1460 mW < ----------------------------------- = 121.7 mA [1] 24-bit x 0.5 V 1030 mW 2650 mW < ----------------------------------- = 220.8 mA [1] 24-bit x 0.5 V 1810 mW 901 mW 1680 mW 901 mW < ----------------------------------- = 75.1 mA 24-bit x 0.5 V 714 mW 1680 mW < ----------------------------------- = 140 mA [1] 24-bit x 0.5 V 1250 mW 585 mW 1120 mW 585 mW < ----------------------------------- = 48.8 mA 24-bit x 0.5 V 1120 mW < ----------------------------------- = 93.3 mA 24-bit x 0.5 V This value signifies package's ability to handle more than 100 mA per output driver. The device's maximum current rating per output is 100 mA. 12. Thermal characteristics Table 17. Symbol Rth(j-a) Rth(j-c) Thermal characteristics Parameter thermal resistance from junction to ambient thermal resistance from junction to case Conditions LQFP48 HVQFN48 LQFP48 HVQFN48 [1] Calculated in accordance with JESD 51-7. [1] [1] [1] [1] Typ 63 36 18 14 Unit C/W C/W C/W C/W PCA9626_2 (c) NXP B.V. 2009. All rights reserved. Product data sheet Rev. 02 -- 31 August 2009 35 of 47 NXP Semiconductors PCA9626 24-bit Fm+ I2C-bus 100 mA 40 V LED driver 13. Static characteristics Table 18. Static characteristics VDD = 2.3 V to 5.5 V; VSS = 0 V; Tamb = -40 C to +85 C; unless otherwise specified. Symbol Supply VDD IDD supply voltage supply current on pin VDD; operating mode; no load; fSCL = 1 MHz VDD = 2.7 V VDD = 3.6 V VDD = 5.5 V Istb standby current on pin VDD; no load; fSCL = 0 Hz; I/O = inputs; VI = VDD VDD = 2.7 V VDD = 3.6 V VDD = 5.5 V VPOR VIL VIH IOL IL Ci Vdrv(LED) IOL ILOH Ron Co OE input VIL VIH ILI Ci VIL VIH ILI Ci [1] Parameter Conditions Min 2.3 Typ - Max 5.5 Unit V - 0.5 1.5 13 4 6 18 mA mA mA [1] 0.5 1.0 6 1.70 6 1 2 15 3.7 3.7 5 10 15 2.0 +0.3VDD 5.5 +1 10 40 1 15 5 40 +0.8 5.5 +1 5 +0.3VDD 5.5 +1 5 A A A V V V mA mA A pF V mA A A pF V V A pF V V A pF power-on reset voltage LOW-level input voltage HIGH-level input voltage LOW-level output current leakage current input capacitance LED driver voltage LOW-level output current HIGH-level output leakage current ON-state resistance output capacitance LOW-level input voltage HIGH-level input voltage input leakage current input capacitance LOW-level input voltage HIGH-level input voltage input leakage current input capacitance no load; VI = VDD or VSS -0.5 0.7VDD Input SCL; input/output SDA VOL = 0.4 V; VDD = 2.3 V VOL = 0.4 V; VDD = 5.0 V VI = VDD or VSS VI = VSS 20 30 -1 0 LED driver outputs VOL = 0.5 V; VDD 4.5 V Vdrv(LED) = 5 V Vdrv(LED) = 40 V Vdrv(LED) = 40 V; VDD = 2.3 V [2] 100 -0.5 0.7VDD -1 -0.5 0.7VDD -1 - Address inputs VDD must be lowered to 0.2 V in order to reset part. (c) NXP B.V. 2009. All rights reserved. PCA9626_2 Product data sheet Rev. 02 -- 31 August 2009 36 of 47 NXP Semiconductors PCA9626 24-bit Fm+ I2C-bus 100 mA 40 V LED driver [2] Each bit must be limited to a maximum of 100 mA and the total package limited to 2400 mA due to internal busing limits. 14. Dynamic characteristics Table 19. Symbol Dynamic characteristics Parameter Conditions Standard-mod e I2C-bus Min fSCL tBUF SCL clock frequency bus free time between a STOP and START condition hold time (repeated) START condition set-up time for a repeated START condition set-up time for STOP condition data hold time data valid acknowledge time data valid time data set-up time LOW period of the SCL clock HIGH period of the SCL clock fall time of both SDA and SCL signals rise time of both SDA and SCL signals pulse width of spikes that must be suppressed by the input filter LOW to HIGH propagation delay HIGH to LOW propagation delay OE to LEDn; MODE2[1:0] = 01 OE to LEDn; MODE2[1:0] = 01 [6] [3][4] [1] Fast-mode I2C-bus Min 0 1.3 Max 400 - Fast-mode Plus I2C-bus Min 0 0.5 Max 1000 - Unit Max 100 - 0 4.7 kHz s tHD;STA tSU;STA 4.0 4.7 - 0.6 0.6 - 0.26 0.26 - s s tSU;STO tHD;DAT tVD;ACK tVD;DAT tSU;DAT tLOW tHIGH tf tr tSP 4.0 0 0.3 0.3 250 4.7 4.0 - 3.45 3.45 300 1000 50 0.6 0 0.1 0.1 100 1.3 0.6 20 + 0.1Cb[5] 20 + 0.1Cb[5] - 0.9 0.9 300 300 50 0.26 0 0.05 0.05 50 0.5 0.26 - 0.45 0.45 120 120 50 s ns s s ns s s ns ns ns [2] Output propagation delay tPLH tPHL 150 150 ns ns PCA9626_2 (c) NXP B.V. 2009. All rights reserved. Product data sheet Rev. 02 -- 31 August 2009 37 of 47 NXP Semiconductors PCA9626 24-bit Fm+ I2C-bus 100 mA 40 V LED driver Table 19. Symbol Dynamic characteristics ...continued Parameter Conditions Standard-mod e I2C-bus Min Max Fast-mode I2C-bus Min Max Fast-mode Plus I2C-bus Min Max 450 ns Unit Output port timing td(SCL-Q) delay time from SCL to data output SCL to LEDn; MODE2[3] = 1; outputs change on ACK SDA to LEDn; MODE2[3] = 0; outputs change on STOP condition - td(SDA-Q) delay time from SDA to data output - - - - - 450 ns [1] [2] [3] [4] tVD;ACK = time for Acknowledgement signal from SCL LOW to SDA (out) LOW. tVD;DAT = minimum time for SDA data out to be valid following SCL LOW. A master device must internally provide a hold time of at least 300 ns for the SDA signal (refer to the VIL of the SCL signal) in order to bridge the undefined region of SCL's falling edge. The maximum tf for the SDA and SCL bus lines is specified at 300 ns. The maximum fall time (tf) for the SDA output stage is specified at 250 ns. This allows series protection resistors to be connected between the SDA and the SCL pins and the SDA/SCL bus lines without exceeding the maximum specified tf. Cb = total capacitance of one bus line in pF. Input filters on the SDA and SCL inputs suppress noise spikes less than 50 ns. [5] [6] SDA tBUF tLOW SCL tr tf tHD;STA tSP tHD;STA P S tHD;DAT tHIGH tSU;DAT Sr tSU;STA tSU;STO P 002aaa986 Fig 18. Definition of timing PCA9626_2 (c) NXP B.V. 2009. All rights reserved. Product data sheet Rev. 02 -- 31 August 2009 38 of 47 NXP Semiconductors PCA9626 24-bit Fm+ I2C-bus 100 mA 40 V LED driver protocol START condition (S) tSU;STA bit 7 MSB (A7) tLOW tHIGH bit 6 (A6) bit 1 (D1) bit 0 (D0) acknowledge (A) STOP condition (P) 1 / fSCL SCL tBUF tr tf SDA tHD;STA tSU;DAT tHD;DAT tVD;DAT tVD;ACK tSU;STO 002aab285 Rise and fall times refer to VIL and VIH. Fig 19. I2C-bus timing diagram 15. Test information VDD open GND VDD PULSE GENERATOR VI DUT RT VO RL 500 CL 50 pF 002aab284 RL = Load resistor for LEDn. RL for SDA and SCL > 1 k (3 mA or less current). CL = Load capacitance includes jig and probe capacitance. RT = Termination resistance should be equal to the output impedance Zo of the pulse generators. Fig 20. Test circuitry for switching times PCA9626_2 (c) NXP B.V. 2009. All rights reserved. Product data sheet Rev. 02 -- 31 August 2009 39 of 47 NXP Semiconductors PCA9626 24-bit Fm+ I2C-bus 100 mA 40 V LED driver 16. Package outline LQFP48: plastic low profile quad flat package; 48 leads; body 7 x 7 x 1.4 mm SOT313-2 c y X 36 37 25 24 ZE A e E HE A A2 A1 (A 3) Lp L detail X wM pin 1 index 48 1 12 ZD bp D HD wM B vM B vM A 13 bp e 0 2.5 scale 5 mm DIMENSIONS (mm are the original dimensions) UNIT mm A max. 1.6 A1 0.20 0.05 A2 1.45 1.35 A3 0.25 bp 0.27 0.17 c 0.18 0.12 D (1) 7.1 6.9 E (1) 7.1 6.9 e 0.5 HD 9.15 8.85 HE 9.15 8.85 L 1 Lp 0.75 0.45 v 0.2 w 0.12 y 0.1 Z D (1) Z E (1) 0.95 0.55 0.95 0.55 7 o 0 o Note 1. Plastic or metal protrusions of 0.25 mm maximum per side are not included. OUTLINE VERSION SOT313-2 REFERENCES IEC 136E05 JEDEC MS-026 JEITA EUROPEAN PROJECTION ISSUE DATE 00-01-19 03-02-25 Fig 21. Package outline SOT313-2 (LQFP48) PCA9626_2 (c) NXP B.V. 2009. All rights reserved. Product data sheet Rev. 02 -- 31 August 2009 40 of 47 NXP Semiconductors PCA9626 24-bit Fm+ I2C-bus 100 mA 40 V LED driver HVQFN48: plastic thermal enhanced very thin quad flat package; no leads; 48 terminals; body 6 x 6 x 0.85 mm D B A SOT778-4 terminal 1 index area E A A1 c detail X C e1 e 13 1/2 e b 24 25 v w M M CAB C y1 C y L 12 e Eh 1/2 e e2 1 36 terminal 1 index area 48 37 X 0 2.5 scale 5 mm Dh DIMENSIONS (mm are the original dimensions) UNIT mm A(1) max 1 A1 0.05 0.00 b 0.25 0.15 c 0.2 D(1) 6.1 5.9 Dh 4.75 4.45 E(1) 6.1 5.9 Eh 4.75 4.45 e 0.4 e1 4.4 e2 4.4 L 0.5 0.3 v 0.1 w 0.05 y 0.05 y1 0.1 Note 1. Plastic or metal protrusions of 0.075 mm maximum per side are not included OUTLINE VERSION SOT778-4 REFERENCES IEC --JEDEC --JEITA --EUROPEAN PROJECTION ISSUE DATE 04-07-30 04-10-07 Fig 22. Package outline SOT778-4 (HVQFN48) PCA9626_2 (c) NXP B.V. 2009. All rights reserved. Product data sheet Rev. 02 -- 31 August 2009 41 of 47 NXP Semiconductors PCA9626 24-bit Fm+ I2C-bus 100 mA 40 V LED driver 17. Handling information All input and output pins are protected against ElectroStatic Discharge (ESD) under normal handling. When handling ensure that the appropriate precautions are taken as described in JESD625-A or equivalent standards. 18. Soldering of SMD packages This text provides a very brief insight into a complex technology. A more in-depth account of soldering ICs can be found in Application Note AN10365 "Surface mount reflow soldering description". 18.1 Introduction to soldering Soldering is one of the most common methods through which packages are attached to Printed Circuit Boards (PCBs), to form electrical circuits. The soldered joint provides both the mechanical and the electrical connection. There is no single soldering method that is ideal for all IC packages. Wave soldering is often preferred when through-hole and Surface Mount Devices (SMDs) are mixed on one printed wiring board; however, it is not suitable for fine pitch SMDs. Reflow soldering is ideal for the small pitches and high densities that come with increased miniaturization. 18.2 Wave and reflow soldering Wave soldering is a joining technology in which the joints are made by solder coming from a standing wave of liquid solder. The wave soldering process is suitable for the following: * Through-hole components * Leaded or leadless SMDs, which are glued to the surface of the printed circuit board Not all SMDs can be wave soldered. Packages with solder balls, and some leadless packages which have solder lands underneath the body, cannot be wave soldered. Also, leaded SMDs with leads having a pitch smaller than ~0.6 mm cannot be wave soldered, due to an increased probability of bridging. The reflow soldering process involves applying solder paste to a board, followed by component placement and exposure to a temperature profile. Leaded packages, packages with solder balls, and leadless packages are all reflow solderable. Key characteristics in both wave and reflow soldering are: * * * * * * Board specifications, including the board finish, solder masks and vias Package footprints, including solder thieves and orientation The moisture sensitivity level of the packages Package placement Inspection and repair Lead-free soldering versus SnPb soldering 18.3 Wave soldering Key characteristics in wave soldering are: PCA9626_2 (c) NXP B.V. 2009. All rights reserved. Product data sheet Rev. 02 -- 31 August 2009 42 of 47 NXP Semiconductors PCA9626 24-bit Fm+ I2C-bus 100 mA 40 V LED driver * Process issues, such as application of adhesive and flux, clinching of leads, board transport, the solder wave parameters, and the time during which components are exposed to the wave * Solder bath specifications, including temperature and impurities 18.4 Reflow soldering Key characteristics in reflow soldering are: * Lead-free versus SnPb soldering; note that a lead-free reflow process usually leads to higher minimum peak temperatures (see Figure 23) than a SnPb process, thus reducing the process window * Solder paste printing issues including smearing, release, and adjusting the process window for a mix of large and small components on one board * Reflow temperature profile; this profile includes preheat, reflow (in which the board is heated to the peak temperature) and cooling down. It is imperative that the peak temperature is high enough for the solder to make reliable solder joints (a solder paste characteristic). In addition, the peak temperature must be low enough that the packages and/or boards are not damaged. The peak temperature of the package depends on package thickness and volume and is classified in accordance with Table 20 and 21 Table 20. SnPb eutectic process (from J-STD-020C) Package reflow temperature (C) Volume (mm3) < 350 < 2.5 2.5 Table 21. 235 220 Lead-free process (from J-STD-020C) Package reflow temperature (C) Volume (mm3) < 350 < 1.6 1.6 to 2.5 > 2.5 260 260 250 350 to 2000 260 250 245 > 2000 260 245 245 350 220 220 Package thickness (mm) Package thickness (mm) Moisture sensitivity precautions, as indicated on the packing, must be respected at all times. Studies have shown that small packages reach higher temperatures during reflow soldering, see Figure 23. PCA9626_2 (c) NXP B.V. 2009. All rights reserved. Product data sheet Rev. 02 -- 31 August 2009 43 of 47 NXP Semiconductors PCA9626 24-bit Fm+ I2C-bus 100 mA 40 V LED driver temperature maximum peak temperature = MSL limit, damage level minimum peak temperature = minimum soldering temperature peak temperature time 001aac844 MSL: Moisture Sensitivity Level Fig 23. Temperature profiles for large and small components For further information on temperature profiles, refer to Application Note AN10365 "Surface mount reflow soldering description". 19. Abbreviations Table 22. Acronym ACK CDM DUT ESD FET HBM I2C-bus LED LSB MM MSB PCB PWM RGB RGBA SMBus Abbreviations Description Acknowledge Charged Device Model Device Under Test ElectroStatic Discharge Field-Effect Transistor Human Body Model Inter-Integrated Circuit bus Light Emitting Diode Least Significant Bit Machine Model Most Significant Bit Printed-Circuit Board Pulse Width Modulation Red/Green/Blue Red/Green/Blue/Amber System Management Bus PCA9626_2 (c) NXP B.V. 2009. All rights reserved. Product data sheet Rev. 02 -- 31 August 2009 44 of 47 NXP Semiconductors PCA9626 24-bit Fm+ I2C-bus 100 mA 40 V LED driver 20. Revision history Table 23. Revision history Release date 20090831 Data sheet status Product data sheet Change notice Supersedes PCA9626_1 Document ID PCA9626_2 Modifications: * * * * * Table 11 "CHASE sequence" modified (corrected commands 02, 03, 04, 06; added additional commands) Section 7.4 "Active LOW output enable input": added 2nd "Remark" Figure 17 "Typical application": added "Remark" Added (new) Section 10.1 "Junction temperature calculation" Section 11 "Limiting values": - Table 15 "Limiting values": added "Tj, junction temperature" specification - Added (new) Table 16 "LQFP48 versus HVQFN48 power dissipation and output current capability" * * PCA9626_1 Added (new) Table 17 "Thermal characteristics" Table 18 "Static characteristics", sub-section "LED driver outputs": added ILOH specification Product data sheet - 20090602 PCA9626_2 (c) NXP B.V. 2009. All rights reserved. Product data sheet Rev. 02 -- 31 August 2009 45 of 47 NXP Semiconductors PCA9626 24-bit Fm+ I2C-bus 100 mA 40 V LED driver 21. Legal information 21.1 Data sheet status Document status[1][2] Objective [short] data sheet Preliminary [short] data sheet Product [short] data sheet [1] [2] [3] Product status[3] Development Qualification Production Definition This document contains data from the objective specification for product development. This document contains data from the preliminary specification. This document contains the product specification. Please consult the most recently issued document before initiating or completing a design. The term `short data sheet' is explained in section "Definitions". The product status of device(s) described in this document may have changed since this document was published and may differ in case of multiple devices. The latest product status information is available on the Internet at URL http://www.nxp.com. 21.2 Definitions Draft -- The document is a draft version only. The content is still under internal review and subject to formal approval, which may result in modifications or additions. NXP Semiconductors does not give any representations or warranties as to the accuracy or completeness of information included herein and shall have no liability for the consequences of use of such information. Short data sheet -- A short data sheet is an extract from a full data sheet with the same product type number(s) and title. A short data sheet is intended for quick reference only and should not be relied upon to contain detailed and full information. For detailed and full information see the relevant full data sheet, which is available on request via the local NXP Semiconductors sales office. In case of any inconsistency or conflict with the short data sheet, the full data sheet shall prevail. damage. NXP Semiconductors accepts no liability for inclusion and/or use of NXP Semiconductors products in such equipment or applications and therefore such inclusion and/or use is at the customer's own risk. Applications -- Applications that are described herein for any of these products are for illustrative purposes only. NXP Semiconductors makes no representation or warranty that such applications will be suitable for the specified use without further testing or modification. Limiting values -- Stress above one or more limiting values (as defined in the Absolute Maximum Ratings System of IEC 60134) may cause permanent damage to the device. Limiting values are stress ratings only and operation of the device at these or any other conditions above those given in the Characteristics sections of this document is not implied. Exposure to limiting values for extended periods may affect device reliability. Terms and conditions of sale -- NXP Semiconductors products are sold subject to the general terms and conditions of commercial sale, as published at http://www.nxp.com/profile/terms, including those pertaining to warranty, intellectual property rights infringement and limitation of liability, unless explicitly otherwise agreed to in writing by NXP Semiconductors. In case of any inconsistency or conflict between information in this document and such terms and conditions, the latter will prevail. No offer to sell or license -- Nothing in this document may be interpreted or construed as an offer to sell products that is open for acceptance or the grant, conveyance or implication of any license under any copyrights, patents or other industrial or intellectual property rights. Export control -- This document as well as the item(s) described herein may be subject to export control regulations. Export might require a prior authorization from national authorities. 21.3 Disclaimers General -- Information in this document is believed to be accurate and reliable. However, NXP Semiconductors does not give any representations or warranties, expressed or implied, as to the accuracy or completeness of such information and shall have no liability for the consequences of use of such information. Right to make changes -- NXP Semiconductors reserves the right to make changes to information published in this document, including without limitation specifications and product descriptions, at any time and without notice. This document supersedes and replaces all information supplied prior to the publication hereof. Suitability for use -- NXP Semiconductors products are not designed, authorized or warranted to be suitable for use in medical, military, aircraft, space or life support equipment, nor in applications where failure or malfunction of an NXP Semiconductors product can reasonably be expected to result in personal injury, death or severe property or environmental 21.4 Trademarks Notice: All referenced brands, product names, service names and trademarks are the property of their respective owners. I2C-bus -- logo is a trademark of NXP B.V. 22. Contact information For more information, please visit: http://www.nxp.com For sales office addresses, please send an email to: salesaddresses@nxp.com PCA9626_2 (c) NXP B.V. 2009. All rights reserved. Product data sheet Rev. 02 -- 31 August 2009 46 of 47 NXP Semiconductors PCA9626 24-bit Fm+ I2C-bus 100 mA 40 V LED driver 23. Contents General description . . . . . . . . . . . . . . . . . . . . . . 1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Ordering information . . . . . . . . . . . . . . . . . . . . . 3 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Pinning information . . . . . . . . . . . . . . . . . . . . . . 5 Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 6 Functional description . . . . . . . . . . . . . . . . . . . 7 Device addresses . . . . . . . . . . . . . . . . . . . . . . . 7 Regular I2C-bus slave address . . . . . . . . . . . . . 7 LED All Call I2C-bus address . . . . . . . . . . . . . . 8 LED Sub Call I2C-bus addresses . . . . . . . . . . . 8 Software Reset I2C-bus address . . . . . . . . . . . 8 Control register . . . . . . . . . . . . . . . . . . . . . . . . . 9 Register definitions . . . . . . . . . . . . . . . . . . . . . 10 Mode register 1, MODE1 . . . . . . . . . . . . . . . . 12 Mode register 2, MODE2 . . . . . . . . . . . . . . . . 12 PWM0 to PWM23, individual brightness control . . . . . . . . . . . . . . . . . . . . . . 13 7.3.4 GRPPWM, group duty cycle control . . . . . . . . 14 7.3.5 GRPFREQ, group frequency . . . . . . . . . . . . . 14 7.3.6 CHASE control . . . . . . . . . . . . . . . . . . . . . . . . 15 7.3.7 LEDOUT0 to LEDOUT5, LED driver output state . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 7.3.8 SUBADR1 to SUBADR3, I2C-bus subaddress 1 to 3 . . . . . . . . . . . . . . . . . . . . . . 23 7.3.9 ALLCALLADR, LED All Call I2C-bus address. 23 7.4 Active LOW output enable input . . . . . . . . . . . 24 7.5 Power-on reset . . . . . . . . . . . . . . . . . . . . . . . . 24 7.6 Software reset. . . . . . . . . . . . . . . . . . . . . . . . . 24 7.7 Individual brightness control with group dimming/blinking . . . . . . . . . . . . . . . . . . . . . . . 25 8 Characteristics of the I2C-bus. . . . . . . . . . . . . 26 8.1 Bit transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 8.1.1 START and STOP conditions . . . . . . . . . . . . . 26 8.2 System configuration . . . . . . . . . . . . . . . . . . . 26 8.3 Acknowledge . . . . . . . . . . . . . . . . . . . . . . . . . 27 9 Bus transactions . . . . . . . . . . . . . . . . . . . . . . . 28 10 Application design-in information . . . . . . . . . 31 10.1 Junction temperature calculation . . . . . . . . . . 32 10.1.1 Example 1: Tj calculation when Tamb is known (PCA9626B, LQFP48) . . . . . . . . . . . . . . . . . . 33 10.1.2 Example 2: Tj calculation where only Tcase is known . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 11 Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . 34 1 2 3 4 5 6 6.1 6.2 7 7.1 7.1.1 7.1.2 7.1.3 7.1.4 7.2 7.3 7.3.1 7.3.2 7.3.3 12 13 14 15 16 17 18 18.1 18.2 18.3 18.4 19 20 21 21.1 21.2 21.3 21.4 22 23 Thermal characteristics . . . . . . . . . . . . . . . . . Static characteristics . . . . . . . . . . . . . . . . . . . Dynamic characteristics . . . . . . . . . . . . . . . . . Test information. . . . . . . . . . . . . . . . . . . . . . . . Package outline . . . . . . . . . . . . . . . . . . . . . . . . Handling information . . . . . . . . . . . . . . . . . . . Soldering of SMD packages . . . . . . . . . . . . . . Introduction to soldering. . . . . . . . . . . . . . . . . Wave and reflow soldering . . . . . . . . . . . . . . . Wave soldering. . . . . . . . . . . . . . . . . . . . . . . . Reflow soldering. . . . . . . . . . . . . . . . . . . . . . . Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . Revision history . . . . . . . . . . . . . . . . . . . . . . . Legal information . . . . . . . . . . . . . . . . . . . . . . Data sheet status . . . . . . . . . . . . . . . . . . . . . . Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . Disclaimers. . . . . . . . . . . . . . . . . . . . . . . . . . . Trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . Contact information . . . . . . . . . . . . . . . . . . . . Contents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 36 37 39 40 42 42 42 42 42 43 44 45 46 46 46 46 46 46 47 Please be aware that important notices concerning this document and the product(s) described herein, have been included in section `Legal information'. (c) NXP B.V. 2009. All rights reserved. For more information, please visit: http://www.nxp.com For sales office addresses, please send an email to: salesaddresses@nxp.com Date of release: 31 August 2009 Document identifier: PCA9626_2 |
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