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TOSHIBA Bi-CMOS Integrated Circuit Silicon Monolithic
TB62709N/F
Intelligent, Constant Current, 7 segment LED numeric display decoder/driver. For use with common anode configuration numeric displays. The TB62709N/F is an intelligent Constant Current LED display driver designed specifically for seven segment LED display applications. The stand alone device includes all of the decode, multiplex and driver circuitry necessary to control up to four seven segment LED digits. All of the information required to program up to four LED digits is input serially including a 16 step brightness control. Expansion beyond four digits is possible with a cascade connection to a second device. The device automatically refreshes and maintains the displayed information.
TB62709N
SDIP24-P-300-1.78 Weight: 1.62g (Typ.)
TB62709F
Features
* * * * * * * * Constant Current segment drivers for consistent display brightness. Single device saves labor and board space. Internal character set simplifies design efforts. Automatically handles multiplex and display refresh tasks. 16 step programmable brightness control. Single device controls up to four digits. Available in thru hole and surface mount packages. Data out cascade port for expansion beyond four digits.
SSOP24-P-300-1.00 Weight: 0.32g (Typ.)
Performance Characteristics
VDD = 4.5V~5.5V Digit enable: 17V / 400mA Segment select: 17V / 0-40mA Max transition frequency: 15Mhz
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All specifications subject to change.
584
TOSHIBA Bi-CMOS Integrated Circuit Silicon Monolithic
TB62709N/F
Block Diagram:
Maximum Ratings:
C HAR AC TERISTIC S Supply Voltage LED Supply Voltage Source Output C urrent D igit 0~3 Segment D rive C urrent Segment a~D P Output C urrent Input Voltage C lock Frequency Total Output C urrent SYMBOL VD D VC C ID IG IOUT IOH/IOL VIN FC LK IVD D R ATIN G 7.0 17 -400 50 +/- 5 -0.3 ~ VD D ~+0.3 15 400 TB62709N: 1.78 Power D issipation PD TB62709F: 0.62 Operation Temperature Storage Temperature Topr Tstg -40 ~ +85 -55 ~+150 C C W U NIT volts volts mA mA mA volts MHz mA
marktech optoelectronics
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All specifications subject to change.
585
TOSHIBA Bi-CMOS Integrated Circuit Silicon Monolithic
TB62709N/F
Recommended Operating Conditions:
CHARACTERISTICS SYMBOL TEST CIRCUIT CONDITION MIN. TYP. MAX. UNIT
Output Stage Supply Current ICC1 1 Set normal operation mode, Rext=760, Out a~DP, all ON VCC = 5V, Ta=25C Set normal operation mode, Rext=760, Out a~DP, all ON VCC = 5V, Ta=25C Normal operation mode, VDD=4.5 - 5.5V Normal operation mode, VDD=4.5 - 5.5V All off mode, VCC=17V All off mode, VCC=17V Normal operation mode IDIG = 320mA -- 300 -- mA
ICC2
1
--
320
--
mA
Digit 0~3 Scanning Freq. Out a~DP Output Current Digit 0~3 Leakage Current Out a~DP Leakage Current Digit 0~3 Output Voltage Logic
fOSC ISEG ILEAK1 ILEAK2 VOUT
2 3 4 4 5
240 29 -- -- 3.0
480 34 -- -- --
960 40 -20 20 --
Hz mA A A V
IDD1 Supply Current IDD2 Operating Supply Current High Level Input Current Low Level Output Current High Level Output Voltage VOH2 VOL1 Low Level Output Voltage VOL2 Clock Frequency FCLK IDD3 IIH IIL VOH1
6 6 6 -- -- 6 6 6 6 6
Standby Mode, Ta=25C Blank Mode, Ta=25C Normal operating mode fCLK=10MHz, Ta=25C Data-in:output a~DP on Data-in, Load&Clock VIN=5V Data-in, Load&Clock VIN=0V Data out, IOH=-1mA Data-out, IOH=-1A Data out, IOH=-1mA Data-out, IOH=-1A CASCADE connected, TA = -40 ~ 85C
-- -- -- -- -- 4.6 -- -- -- 10
-- -- -- -- -- -- VDD -- 0.1 --
200 12.5 20.5 1 -1 -- -- 0.4 -- --
A mA mA A A V V V V MHz
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All specifications subject to change.
586
TOSHIBA Bi-CMOS Integrated Circuit Silicon Monolithic
TB62709N/F
Switching Characteristics:
CHARACTERISTICS Data Hold Time (D-IN Clock) Data Set-up Time (D-IN Clock) Propagation Delay (Clock D-OUT) tPLH-SO High Level Pulse Width Of Clock Low Level Pulse Width Of Clock Pulse Width Of Load Setup Time (Clock-Load) Setup Time (Load-Clock) Out a ~ DP Propagation Delay (Load-Outn) Out a ~ DP Rise Time (OUTn) Out a ~ DP Fall Time (OUTn) Digit 0 ~ 3 Propagation Delay (Load-DIGn) Digit 0 ~ 3 Rise Time (DIGn) Digit 0 ~ 3 Fall Time (DIGn) tCLKH tCLKL tw LD tCLK-LD tLD-CLK tpHL-SEG tpLH-SEG trSEG tfSEG tpHL-DIG tpLH-DIG trDIG tfDIG CL=10pf CL=10pf CL=10pf CL=10pf CL=10pf CL=10pf CL=10pf CL=10pf CL=10pf -- -- -- -- -- -- -- -- 0.2 0.2 -- -- 0.4 0.4 25 30 30 100 50 50 -- -- 1.0 1.0 -- -- 2.0 2.0 -- -- -- -- -- -- 5.0 5.0 -- -- 10.0 10.0 -- -- ns ns ns ns ns ns ns ns s s s s s s SYMBOL tDHO tDST tPHL-SO CL=10pf CONDITION MIN. -- -- -- TYP. 10 20 25 MAX. -- -- -- UNIT ns ns ns
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587
TOSHIBA Bi-CMOS Integrated Circuit Silicon Monolithic
TB62709N/F
Recommended Operating Conditions:
CHARACTERISTICS SYMBOL CONDITION MIN. TYP. MAX. UNIT
Output Stage Supply Voltage Digit 0~3 Output Current Out a~DP Output Current Logic Supply Voltage High Level Input Current Low Level Input Current High Level Input Voltage Low Level Input Voltage Switching Condition Data Hold Time (D-IN Clock) Data Setup Time (D-IN Clock) Propagation Delay (Clock D-Out) High Level Pulse Width Of Clock Low Level Pulse Width Of Clock Pulse Width Of Load Setup Time (Clock-Load) Setup Time (Load-Clock) tDHO tDST tPDSO tCLKH tCLKL twLD tCKLD tLDCLK CL=10pf 30 50 50 30 30 150 100 100 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ns ns ns ns ns ns ns ns VDD IIH IIL VIH VIL Data-In, Load&Clock,VIN=VDD Data-In, Load&Clock,VIN=0V 4.5 -- -- 0.7 VDD -- -- -- -- -- -- 5.5 1 -1 -- 0.3 VDD V A A V V VCC IDIG ISEG VOUT=3.0V VCE=0.7V 4.0 -- -- -- -- -- 6.0 -320 40 V mA mA
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All specifications subject to change.
588
TOSHIBA Bi-CMOS Integrated Circuit Silicon Monolithic
TB62709N/F
Terminal Description:
PIN No. 1 2 3 4 5-12 13 14 15 6,17,19,2 18 21 22 23 24 NAME VDD Serial Data IN (SI) Clock (CK) Load (LD) OUT a~DP P-GND Test In 2 Test In 1 Digit 0~3 VCC P-GND Rext Data Out (DO) L-GND Logic Supply Voltage Serial Data Input To Shift Register Clock Input Terminal Load Input Terminal Output Terminal to Cathodes of Seven Segment Display Power Ground Terminal Test Terminal - Grounded During Normal Operation Test Terminal - Grounded During Normal Operation Output Terminal to Anodes of Seven Segment Display Supply Voltage For LEDs Power Ground Terminal Constant Current Programming Terminal Cascade Connection To Next Display Stage Logic Ground Terminal FUNCTION
Timing Diagram:
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589
TOSHIBA Bi-CMOS Integrated Circuit Silicon Monolithic
TB62709N/F
Data Input Data is input on the SERIAL-IN terminal. Each 16 bit serial word includes an address (D15 ~ D8) and data (D7 ~ D0). A low to high transition load command on the LOAD terminal loads the data into the appropriate registers following the 16th clock pulse. Operation Serial data is input on the DATA-IN terminal beginning with the most significant bit (MSB). Data is clocked through the 16 bit shift register on the rising edge of the clock. A Low to High transition on the LOAD input following the 16th (LSB) bit latches the 16 bit word into the 16 bit D-type latch. Expansion beyond four digits is possible through the use of a cascade connection from the DATA-OUT terminal. The data-out lags data-in by one bit through the data-out terminal. Each 16 bit word typically includes 8 address bits and 8 data bits. The first four data bits, beginning with D15 (MSB) ~ D12 select the Action mode (see figure 1). These global commands determine the overall function the device is to perform and includes Blank, Normal Operation, Load Register, All On and Stand-by. Data bits D11~D8 select the particular register to be loaded (see figure 2) should the load register function be selected. Data bits D7~D0 (LSB) define the specific commands required to program the display and define the brightness setting (duty cycle). Figure 1. Action Mode
REGISTER DATA FUNCTION Blank (OUTn & Digit 0~3 All Off) Normal Operation Load Register (Duty, Decode, Digit & Data) All On (OUTn ALL On) Stand-By D15 D14 D13 D12 D11~D8 D7~D4 D3~D0 Hex Code INITIAL STATE
0
0
0
0
--
--
--
0 --- H
0
0
0
1
--
--
--
1--- H
0
0
1
0
X
X
X
2 xxx H
0 0
0 1
1 0
1 0
-- --
-- --
-- --
3 --- H 4 --- H
"x" indicates that data is required in this field to execute the function. "-" indicates that data in this field is not required and not recognized.
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590
TOSHIBA Bi-CMOS Integrated Circuit Silicon Monolithic
TB62709N/F
Action Mode 1. Blank - Constant current segment drivers are off resulting in an all segments off condition. Data D15 ~ D12 are 0. D11~D0 are not relevent in blank mode. 2. Normal (Operation) - Instructs device to display data loaded during previous steps. D11~ D0 are not relevent in the Normal Operation mode. 3. Load Register - Directs the device to recognize and load D11~ D0. In this mode D11 ~ D8 determines the specific register to be loaded (see figure 2) and D7 ~ D0 serves as the actual data to be loaded for programming the brightness (duty cycle) or the particular digit. 4. All On - All constant current segment drivers are on resulting in an all segments illuminated condition. D11 ~ D0 are not relevent in this mode. 5. Stand By - All display segments off condition. The Stand-By command turns off all internal bias currents and serves as a low power consumption mode (<.2mA). Used with Stand-By set up commands "All Data Clear" or "Data Not Cleared" (table 7). The initial state, upon power up, is the BLANK state. Application Note: Stand-By and Blank perform similar functions in that the display is totally blank when either command is input. Stand-By provides a low power consumption (<.2ma current draw on VDD) mode by turning off all internal bias currents in the internal driver circuits. The Stand-By command also cuts off the Rext bias current used to regulate the programmed constant current within the device.
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All specifications subject to change.
591
TOSHIBA Bi-CMOS Integrated Circuit Silicon Monolithic
TB62709N/F
LOAD REGISTER Mode Figure 2. LOAD REGISTER Mode
REGISTER DATA FUNCTION Load Duty Register Load Decode & Digit Register Load Data Register 0 Load Data Register 1 Load Data Register 2 Load Data Register 3 D15~D12 2H 2H 2H 2H 2H 2H D11 0 0 0 0 0 0 D10 0 0 0 0 1 1 D9 0 0 1 1 0 0 D8 0 1 0 1 0 1 D7~D4 X X X X X X D3~D0 X X X X X X Hex Code 20XXH 21XXH 22XXH 23XXH 24XXH 25XXH
"x" indicates that data is required in this field to execute the function. "-" indicates that data in this field is not required and not recognized. Selects the specific register to be loaded. The LOAD REGISTER mode is enabled by the Load Register Action mode command (see Figure 1 - Action mode). 1. Duty Register - Enables the device to accept duty cycle (brightness) setting. Sixteen brightness steps (0/16 to 15/16) are available. 2. Decode and Digit Register - Enables the device to accept data defining digit or digits to be programmed. 3. Data Register 0~3 - Commands the device to enable a specific digit register to accept the data to be displayed on the selected digit. Actual display data is set up by D7~D0.
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592
TOSHIBA Bi-CMOS Integrated Circuit Silicon Monolithic
TB62709N/F
Data Decode The TB62709F utilizes two basic modes of operation. In the DECODE MODE, data encoded in data bits D7~D0 is decoded to display preset characters per table 8. This mode is activated as illustrated in table 5. With D15~D8 programmed as 21 Hex and D7~D4 as 1 Hex the DECODE MODE is selected. In the DIRECT DRIVE MODE the ability to decode data to preset characters for display is bypassed giving the programmer direct control of the 8 constant current sink outputs. This mode may be used to drive discrete LEDs or to display characters not included in the character set.
REGISTER DATA FUNCTION Direct Drive Decode D15~D8 21H 21H D7 0 0 D6 0 0 D5 0 0 D4 0 1 D3~D0 X X Hex Code 210XH 211XH INITIAL STATE
"x" indicates that data is required in this field to execute the function. "-" indicates that data in this field is not required and not recognized. This programming step is performed simultaneously with the DIGIT SELECTION decision (table 4) which utilizes D3~D0.The initial state, upon power up, is the DECODE mode. Table below illustrates the input / output relationship in the DIRECT DRIVE mode. A Logic 1 data state turns the respective output on and a Logic 0 data state turns the respective output off.
REGISTER DATA D0 D1 D2 D3 D4 D5 D6 D7 OUTPUT Out-a Out-b Out-c Out-d Out-e Out-f Out-g Out-DP INITIAL STATE L L L L L L L L H Data is output ON (1) and L Data is output OFF (0) NOTE
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593
TOSHIBA Bi-CMOS Integrated Circuit Silicon Monolithic
TB62709N/F
Brightness Control Brightness is controlled by controlling the "on time" duty cycle. The device allows for 16 brightness steps as illustrated in list 3 with 0/16 as the dimmest setting (not illuminated) to 15/16 as the brightest setting. The duty cycle control register is addressed with a 20 Hex command at D15~D8 and the appropriate data per list 3 at D3~D0. D7~D4 are not recognized by the duty cycle register. The initial state, upon power up is 15/16, or full brightness.
INITIAL STATE D0 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 Hex Code 20X0H 20X1H 20X2H 20X3H 20X4H 20X5H 20X6H 20X7H 20X8H 20X9H 20XAH 20XBH 20XCH 20XDH 20XEH 20XFH
REGISTER DATA Duty Cycle 0/16 1/16 2/16 3/16 4/16 5/16 6/16 7/16 8/16 9/16 10/16 11/16 12/16 13/16 14/16 15/16 D15~D8 20H 20H 20H 20H 20H 20H 20H 20H 20H 20H 20H 20H 20H 20H 20H 20H D7~D4 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- D3 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 D2 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 D1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1
"x" indicates that data is required in this field to execute the function. "-" indicates that data in this field is not required and not recognized.
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594
TOSHIBA Bi-CMOS Integrated Circuit Silicon Monolithic
TB62709N/F
Digit Selection The digit(s) to be programmed are selected as illustrated table below. This function is enabled with a 21 Hex command at D15~D8 and the appropriate data sequence to select Digit 0 only, Digit 0 and 1, Digit 0 -2 or digit 0-3 as illustrated in table 4. This programming step is performed simultaneously with the DECODE / DIRECT DRIVE decision (table 5) which utilizes D7~D4. The initial state, upon power up, is Digits 0-3 activated.
REGISTER DATA D15~D8 Activate Digit 0 Only Activate Digit 0~1 Activate Digit 0~2 Activate Digit 0~3 21H 21H 21H 21H D7~D4 X X X X D3 0 0 0 0 D2 0 0 0 0 D1 0 0 1 1 D0 0 1 0 1 Hex Code 21X0H 21X1H 21X2H 21X3H INITIAL STATE
STAND-BY Commands Two STAND-BY commands are available as illustrated in table below. STAND-BY / NO DATA CLEAR places the device in a power save mode while leaving data intact in the various registers. This mode is enabled by a 4 Hex command at D15~D12 and 0 Hex at D3~D0. D11~D4 are not relevent in the STAND-BY / NO DATA CLEAR Mode. STAND-BY / DATA CLEAR also places the device in a power save mode and clears data in the various registers leaving registers in their initial state. This mode is enabled by a 4 Hex command at D15~D12 and 1 Hex at D3~D0. D11~D4 are not relevent in the STAND-BY / DATA CLEAR Mode.
REGISTER DATA D15~D8 Stand-By (No Data Clear) Stand-By (Data Clear) 4-H 4-H D7~D4 -- -- D3 0 0 D2 0 0 D1 0 0 D0 0 1 Hex Code 4XX0H 4XX1H
"x" indicates that data is required in this field to execute the function. "-" indicates that data in this field is not required and not recognized.
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595
TOSHIBA Bi-CMOS Integrated Circuit Silicon Monolithic
TB62709N/F
CHARACTER DECODE Mode Table 8 illustrates the data versus character displayed relationship. This mode is enabled along with the LOAD REGISTER Mode (See LOAD REGISTER Mode section - Figure 2). A 2 Hex command at D15~D12 selects the LOAD REGISTER Mode. The specific register to be addressed is selected by D11~D8. The digits are designated D0, D1, D2 and D3 and are addressed per their respective registers as illustrated in Figure 2. D3~D0 provides the code for the seven segment display. D5 and D4 select one of two character sets and D6 controls the decimal point for each digit.
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596
TOSHIBA Bi-CMOS Integrated Circuit Silicon Monolithic
TB62709N/F
Operation examples. Example 1 Example 1 sets up the character a at Digit 0, b at Digit 1, c at Digit 2 and d at Digit 3. The characters are initially set at full brightness (15/16 duty cycle) and displayed. The duty cycle is then changed to half brightness (8/16 duty cycle) as the display is first blanked and then activated with the same a,b,c and d characters. The display is then flashed on and off by alternating the BLANK and NORMAL commands before going to the STAND-BY Mode.
STEP 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 D15~D12 -- 0010 0010 0010 0010 0010 0010 0001 0010 0000 0001 0000 0001 0000 0001 0100 D11~D8 -- 0000 0001 0010 0011 0100 0101 XXXX 0000 XXXX XXXX XXXX XXXX XXXX XXXX XXXX D7~D4 -- XXXX 0001 X000 X000 X000 X000 XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX D3~D0 -- 1111 0011 1010 1011 1100 1101 XXXX 1000 XXXX XXXX XXXX XXXX XXXX XXXX 0000 DIGIT 0~3 Off Off Off Off Off Off Off On On Off On Off On Off On Off SEGMENT a,b,c,d,e,f,g Off Off Off Off Off Off Off On On Off On Off On Off On Off SEG DP Off Off Off Off Off Off Off Off Off Off Off Off Off Off Off Off MODE Initial State (Clear Mode) Duty=15/16 Decode 4 Dig. Dig 0=a Dig 1=b Dig 2=c Dig 3=d Normal Duty=8/16 Blank Normal Blank Normal Blank Normal Stand-By (Shut Down) DISPLAY INDICATION All Blank All Blank All Blank All Blank All Blank All Blank All Blank a-b-c-d a-b-c-d All Blank a-b-c-d All Blank a-b-c-d All Blank a-b-c-d All Blank
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597
TOSHIBA Bi-CMOS Integrated Circuit Silicon Monolithic
TB62709N/F
Operation examples. Example 2 Example 2 sets up the character a with the decimal point on at Digit 0 at full brightness (15/16 duty cycle) with the remaining digits (1~3) left blank. The display then changes to a character b with the decimal point on displayed at Digit 1 with Digits 0, 2 and 3 blank. Character c (decimal point on) is then displayed at Digit 2 with Digits 0, 1 and 3 left blank and the sequence ends with the character d (decimal point on) displayed on Digit 3 with Digits 0~2 left blank followed by the STAND-BY Mode.
STEP D15~D12 D11~D8 D7~D4 D3~D0 DIGIT 0~3 SEGMENT a,b,c,d,e,f,g Off Off Off Off Off Off Off On On On On On On On Off SEG DP Off Off Off Off Off Off Off Off Off Off Off Off Off Off Off MODE Initial State (Clear Mode) Duty=15/16 Decode 4 Dig. Dig 0=a Dig 1=Blank Dig 2=Blank Dig 3=Blank Normal Dig 0=Blank Dig 1=b Dig 1=Blank Dig 2=c Dig 2=Blank Dig 3=d Stand-By (Shut Down) DISPLAY INDICATION All Blank All Blank All Blank All Blank All Blank All Blank All Blank a--All Blank -b-All Blank --cAll Blank ---d All Blank
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14
-- 0010 0010 0010 0010 0010 0010 0001 0010 0010 0010 0010 0010 0010 0100
-- 0000 0001 0010 0011 0100 0101 XXXX 0010 0011 0011 0100 0100 0101 XXXX
-- XXXX 0001 X100 X001 X001 X001 XXXX X001 X100 X001 X100 X001 X100 XXXX
-- 1111 0011 1010 0000 0000 0000 XXXX 0000 1011 0000 1100 0000 1101 0000
Off Off Off Off Off Off Off On Off On Off On Off On Off
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598
TOSHIBA Bi-CMOS Integrated Circuit Silicon Monolithic
TB62709N/F
State Movement Diagram
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599
TOSHIBA Bi-CMOS Integrated Circuit Silicon Monolithic
TB62709N/F
Test Circuit
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600
TOSHIBA Bi-CMOS Integrated Circuit Silicon Monolithic
TB62709N/F
Test Circuit
marktech optoelectronics
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All specifications subject to change.
601
TOSHIBA Bi-CMOS Integrated Circuit Silicon Monolithic
TB62709N/F
Test Circuit
marktech optoelectronics
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All specifications subject to change.
602
TOSHIBA Bi-CMOS Integrated Circuit Silicon Monolithic
TB62709N/F
Duty Cycle Control vs. Output Current Value:
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603
TOSHIBA Bi-CMOS Integrated Circuit Silicon Monolithic
TB62709N/F
External Resister vs. Output Current Value:
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604
TOSHIBA Bi-CMOS Integrated Circuit Silicon Monolithic
TB62709N/F
Cascade Operation:
Data In DIG 0-3 4 4 4 4 Clock
Vcc 4 8 TB62709 8 a~Dp 8 8 8
LOAD
Data Out 4
DIG 4-7 Data In Vcc 4 8 TB62709
4
4
4
8 a~Dp
8
8
8
Data Out DIG 8-11 4 4 4 4
Data In
Vcc 4 8 TB62709 8 a~Dp 8 8 8
In order to update the display information within a specific driver perform the following actions as appropriate.
Case 1. Digit 0-3: Input 16 bit data serially, Pulse Load Line High Once Case 2. Digit 4-7: Input 32 bits of data that corresponds to the information to be displayed on Digits 0-3 + Digits 4-7 (most significant) then Pulse Load Line High Once Case 3. Digit 8-11: Input 48 bits of data that corresponds to the information to be displayed on Digits 0-3 + Digits 4-7 + Digits 8-11 (most significant) then Pulse Load Line High Once
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All specifications subject to change.
605
TOSHIBA Bi-CMOS Integrated Circuit Silicon Monolithic
TB62709N/F
Outline:
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All specifications subject to change.
606
TOSHIBA Bi-CMOS Integrated Circuit Silicon Monolithic
TB62709N/F
Outline:
marktech optoelectronics
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120 Broadway * Menands, New York 12204 Toll Free: (800) 98-4LEDS * Fax: (518) 432-7454
All specifications subject to change.
607

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