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APPLICATION NOTES AND DEVELOPMENT SYSTEM AVAILABLE
AN99 * AN115 * AN124 *AN133 * AN134 * AN135
Single Supply / Low Power / 1024-tap / SPI bus
Preliminary Information
X9111
Single Digitally-Controlled (XDCPTM) Potentiometer
FEATURES * 1024 Resistor Taps - 10-Bit Resolution * SPI Serial Interface for write, read, and transfer operations of the potentiometer * Wiper Resistance, 40 Typical @ 5V * Four Non-Volatile Data Registers * Non-Volatile Storage of Multiple Wiper Positions * Power On Recall. Loads Saved Wiper Position on Power Up. * Standby Current < 3A Max * VCC: 2.7V to 5.5V Operation * 100K End to End Resistance * 100 yr. Data Retention * Endurance: 100, 000 Data Changes Per Bit Per Register * 14-Lead TSSOP, 15-Lead CSP (Chip Scale Packaging) * Low Power CMOS * Single Supply version of the X9110 DESCRIPTION The X9111 integrates a single digitally controlled potentiometer (XDCP) on a monolithic CMOS integrated circuit. The digital controlled potentiometer is implemented using 1023 resistive elements in a series array. Between each element are tap points connected to the wiper terminal through switches. The position of the wiper on the array is controlled by the user through the SPI bus interface. The potentiometer has associated with it a volatile Wiper Counter Register (WCR) and four non-volatile Data Registers that can be directly written to and read by the user. The contents of the WCR controls the position of the wiper on the resistor array though the switches. Powerup recalls the contents of the default data register (DR0) to the WCR. The XDCP can be used as a three-terminal potentiometer or as a two terminal variable resistor in a wide variety of applications including control, parameter adjustments, and signal processing.
FUNCTIONAL DIAGRAM
VCC RH
SPI Bus Interface
Address Data Status
Bus Interface & Control
Write Read Transfer
Power On Recall Wiper Counter Register (WCR) Data Registers (DR0-DR3) Wiper
100K 1024-taps POT
Control
VSS
NC
RW
RL
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X9111 - Preliminary Information
DETAILED FUNCTIONAL DIAGRAM
VCC
HOLD CS
Power On Recall
DR0 DR1
Wiper Counter Register (WCR)
SCK SO SI
RH
100K 1024-taps
A0 A1
WP
Interface and Control Circuitry
Data
DR2 DR3
RL RW
Control
VSS
CIRCUIT LEVEL APPLICATIONS * Vary the gain of a voltage amplifier * Provide programmable dc reference voltages for comparators and detectors * Control the volume in audio circuits * Trim out the offset voltage error in a voltage amplifier circuit * Set the output voltage of a voltage regulator * Trim the resistance in Wheatstone bridge circuits * Control the gain, characteristic frequency and Q-factor in filter circuits * Set the scale factor and zero point in sensor signal conditioning circuits * Vary the frequency and duty cycle of timer ICs * Vary the dc biasing of a pin diode attenuator in RF circuits * Provide a control variable (I, V, or R) in feedback circuits
SYSTEM LEVEL APPLICATIONS * Adjust the contrast in LCD displays * Control the power level of LED transmitters in communication systems * Set and regulate the DC biasing point in an RF power amplifier in wireless systems * Control the gain in audio and home entertainment systems * Provide the variable DC bias for tuners in RF wireless systems * Set the operating points in temperature control systems * Control the operating point for sensors in industrial systems * Trim offset and gain errors in artificial intelligent systems
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X9111 - Preliminary Information
PIN CONFIGURATION
TSSOP SO A0 NC CS SCK SI VSS 14 1 13 2 3 12 4 X9111 11 5 10 6 9 8 7 VCC RL RH RW HOLD A1 WP 3 X9111 A SO B A0 C CS D SCK E SI VSS A1 WP HOLD NC RW NC RH VCC RL CSP 2 1
PIN ASSIGNMENTS Pin (TSSOP)
1 2 3 4 5 6 7 8 9 10 11 12 13 14
Pin (CSP)
A3 B3 B2, C2 C3 D3 E3 E2 D2 E1 D1 C1 B1 A1 A2
Symbol
SO A0 NC CS SCK SI VSS WP A1 HOLD RW RH RL VCC Serial Data Output Device Address No Connect Chip Select Serial Clock Serial Data Input System Ground Hardware Write Protect Device Address
Function
Device Select. Pause the Serial Bus Wiper Terminal of the Potentiometer High Terminal of the Potentiometer Low Terminal of the Potentiometer System Supply Voltage
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X9111 - Preliminary Information
PIN DESCRIPTIONS Bus Interface Pins SERIAL OUTPUT (SO) SO is a serial data output pin. During a read cycle, data is shifted out on this pin. Data is clocked out by the falling edge of the serial clock. SERIAL INPUT (SI) SI is the serial data input pin. All opcodes, byte addresses and data to be written to the pots and pot registers are input on this pin. Data is latched by the rising edge of the serial clock. SERIAL CLOCK (SCK) The SCK input is used to clock data into and out of the X9111. HOLD (HOLD) HOLD is used in conjunction with the CS pin to select the device. Once the part is selected and a serial sequence is underway, HOLD may be used to pause the serial communication with the controller without resetting the serial sequence. To pause, HOLD must be brought LOW while SCK is LOW. To resume communication, HOLD is brought HIGH, again while SCK is LOW. If the pause feature is not used, HOLD should be held HIGH at all times. DEVICE ADDRESS (A0, A1) The address inputs are used to set the 8-bit slave address. A match in the slave address serial data stream must be made with the address input (A1-A0) in order to initiate communication with the X9111. CHIP SELECT (CS) When CS is HIGH, the X9111 is deselected and the SO pin is at high impedance, and (unless an internal write cycle is underway) the device will be in the standby state. CS LOW enables the X9111, placing it in the active power mode. It should be noted that after a power-up, a HIGH to LOW transition on CS is required prior to the start of any operation. HARDWARE WRITE PROTECT INPUT (WP) The WP pin when LOW prevents nonvolatile writes to the Data Registers. Potentiometer Pins RH, RL The RH and RL pins are equivalent to the terminal connections on a mechanical potentiometer. RW The wiper pin is equivalent to the wiper terminal of a mechanical potentiometer. Bias Supply Pins SYSTEM SUPPLY VOLTAGE (VCC) AND SUPPLY GROUND (VSS) The VCC pin is the system supply voltage. The VSS pin is the system ground. Other Pins NO CONNECT (NC) Pin should be left open. This pin is used for Xicor manufacturing and test purposes. PRINCIPLES OF OPERATION DEVICE DESCRIPTION Serial Interface The X9111 supports the SPI interface hardware conventions. The device is accessed via the SI input with data clocked-in on the rising SCK. CS must be LOW and the HOLD and WP pins must be HIGH during the entire operation. The SO and SI pins can be connected together, since they have three state outputs. This can help to reduce system pin count. Array Description The X9111 is comprised of a resistor array (see Figure 1). The array contains the equivalent of 1023 discrete resistive segments that are connected in series. The physical ends of each array are equivalent to the fixed terminals of a mechanical potentiometer (RH and RL inputs). At both ends of each array and between each resistor segment is a CMOS switch connected to the wiper (RW) output. Within the individual array only one switch may be turned on at a time.
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X9111 - Preliminary Information
Figure 1. Detailed Potentiometer Block Diagram
Serial Data Path From Interface Circuitry Register 0 (DR0) 10 Register 1 (DR1) 10
Serial Bus Input C O U N T E R D E C O D E
RH
Parallel Bus Input Wiper Counter Register (WCR)
Register 2 (DR2)
Register 3 (DR3)
If WCR = 000[HEX] then RW = RL If WCR = 3FF[HEX] then RW = RH RL
R W
These switches are controlled by a Wiper Counter Register (WCR). The 10-bits of the WCR (WCR[9:0]) are decoded to select, and enable, one of 1024 switches. Wiper Counter Register (WCR) The X9111 contains a Wiper Counter Register (see Table 1) for the XDCP potentiometer. The WCR is equivalent to a serial-in, parallel-out register/counter with its outputs decoded to select one of 1024 switches along its resistor array. The contents of the WCR can be altered in one of three ways: (1) it may be written directly by the host via the write Wiper Counter Register instruction (serial load); (2) it may be written indirectly by transferring the contents of one of four associated Data Registers via the XFR Data Register; (3) it is loaded with the contents of its Data Register zero (DR0) upon power-up. The Wiper Counter Register is a volatile register; that is, its contents are lost when the X9111 is powereddown. Although the register is automatically loaded with the value in R0 upon power-up, this may be different from the value present at power-down. Powerup guidelines are recommended to ensure proper loadings of the R0 value into the WCR.
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Data Registers (DR3 to DR0) The potentiometer has four 10-bit non-volatile Data Registers. These can be read or written directly by the host. Data can also be transferred between any of the four Data Registers and the Wiper Counter Register. All operations changing data in one of the Data Registers is a nonvolatile operation and will take a maximum of 10ms. If the application does not require storage of multiple settings for the potentiometer, the Data Registers can be used as regular memory locations for system parameters or user preference data. A DR[9:0] is used to store one of the 1024 wiper position (0 ~1023). Table 2. Status Register (SR) This 1-bit status register is used to store the system status (see Table 3). WIP: Write In Progress status bit, read only. - When WIP=1, indicates that high-voltage write cycle is in progress. - When WIP=0, indicates that no high-voltage write cycle is in progress.
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X9111 - Preliminary Information
Table 1. Wiper Latch, WL (10-bit), WCR9-WCR0: Used to store the current wiper position (Volatile, V)
WCR9 V (MSB) WCR8 V WCR7 V WCR6 V WCR5 V WCR4 V WCR3 V WCR2 V WCR1 V WCR0 V (LSB)
Table 2. Data Register, DR (10-bit), Bit 9-Bit 0: Used to store wiper positions or data (Non-Volatile, NV)
Bit 9 NV MSB Bit 8 NV Bit 7 NV Bit 6 NV Bit 5 NV Bit 4 NV Bit 3 NV Bit 2 NV Bit 1 NV Bit 0 NV LSB
Table 3. Status Register, SR (1-bit)
WIP (LSB)
DEVICE INSTRUCTIONS Identification Byte (ID and A) The first byte sent to the X9111 from the host, following a CS going HIGH to LOW, is called the Identification Byte. The most significant four bits of the slave address are a device type identifier. The ID[3:0] bits is the device ID for the X9111; this is fixed as 0101[B] (refer to Table 4). The A1-A0 bits in the ID byte are the internal slave address. The physical device address is defined by the state of the A1-A0 input pins. The slave address is externally specified by the user. The X9111 compares the serial data stream with the address input state; a Table 4. Identification Byte Format
Device Type Identifier
successful compare of the address bits is required for the X9111 to successfully continue the command sequence. Only the device whose slave address matches the incoming device address sent by the master executes the instruction. The A1-A0 inputs can be actively driven by CMOS input signals or tied to VCC or VSS. The R/W bit is used to set the device to either read or write mode. Instruction Byte and Register Selection The next byte sent to the X9111 contains the instruction and register pointer information. The three most significant bits are used provide the instruction opcode (I[2:0]). The RB and RA bits point to one of the four registers. The format is shown in Table 5.
Internal Slave Address
Read or Write Bit
ID3 0 (MSB)
ID2 1
ID1 0
ID0 1
0
A1
A0
R/W (LSB)
Table 5. Instruction Byte Format
Instruction Opcode Register Selection
I2 (MSB)
I1
I0
0
RB 0 0 1 1
RB
RA 0 1 0 1
RA
Register DR0 DR1 DR2 DR3
0
0 (LSB)
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X9111 - Preliminary Information
Five of the seven instructions are four bytes in length. These instructions are: - Read Wiper Counter Register - read the current wiper position of the selected pot, - Write Wiper Counter Register - change current wiper position of the selected pot, - Read Data Register - read the contents of the selected data register; - Write Data Register - write a new value to the selected data register. - Read Status - This command returns the contents of the WIP bit which indicates if the internal write cycle is in progress. The basic sequence of the four byte instructions is illustrated in Figure 3. These four-byte instructions exchange data between the WCR and one of the Data Registers. A transfer from a Data Register to a WCR is essentially a write to a static RAM, with the static RAM controlling the wiper position. The response of the wiper to this action will be delayed by tWRL. A transfer from the WCR (current wiper position), to a Data Register is a write to nonvolatile memory and takes a minimum of tWR to complete. The transfer can occur between the potentiometer and one of its associated registers. The Read Status Register instruction is the only unique format (see Figure 4). Two instructions require a two-byte sequence to complete (see Figure 2). These instructions transfer data between the host and the X9111; either between Figure 2. Two-Byte Instruction Sequence
CS SCK
the host and one of the Data Registers or directly between the host and the Wiper Counter Register. These instructions are: - XFR Data Register to Wiper Counter Register - This transfers the contents of one specified Data Register to the associated Wiper Counter Register. - XFR Wiper Counter Register to Data Register - This transfers the contents of the specified Wiper Counter Register to the specified associated Data Register. See Instruction format for more details. Write in Process (WIP bit) The contents of the Data Registers are saved to nonvolatile memory when the CS pin goes from LOW to HIGH after a complete write sequence is received by the device. The progress of this internal write operation can be monitored by a Write In Process bit (WIP). The WIP bit is read with a Read Status command (see Figure 4). Power Up and Down Requirements There are no restrictions on the power-up condition of VCC and the voltages applied to the potentiometer pins provided that the VCC is always more positive than or equal to the voltages at RH, RL, and RW, i.e., VCC RH, RL, RW. There are no restrictions on the powerdown condition. However, the datasheet parameters for the DCP do not apply until 1millisecond after VCC reaches its final value.
SI
0
1
0
1
0 0 A1 A0 R/W I2 Internal Address I1 I0
0 RB RA Register Address
0 0
0 0
ID3 ID2 ID1 ID0 Device ID
Instruction Opcode
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X9111 - Preliminary Information
Figure 3. Four-Byte Instruction Sequence (Write or Read for WCR or Data Registers)
CS SCK SI 0
0
101
0
0XX0
0X XXX XX
W C R 9 W C R 8 W C R 7 W C R 6 W C R 5 W C R 4 W C R 3 W C R 2 W C R 1 W C R 0
ID3 ID2 ID1 ID0 0
A1 A0 R/W I2 I1 I0 0 RB RA 0 0
Device ID
Internal Address
Instruction Register Opcode Address
Wiper Position
Figure 4. Four-Byte Instruction Sequence (Read Status Registers)
CS SCK SI
0
101
0
1
I0
0XX0
0 RB RA 0
0 X XXXX XXX
0
0 0 0 00 00
WIP
ID3 ID2 ID1 ID0 0 A1 A0 R/W I2 I1
Device ID
Internal Address
Instruction Register Address Opcode
Status Bit
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X9111 - Preliminary Information
Table 6. Instruction Set Instruction Set Instruction
Read Wiper Counter Register Write Wiper Counter Register Read Data Register Write Data Register XFR Data Register to Wiper Counter Register XFR Wiper Counter Register to Data Register Read Status (WIP bit)
R/W
1 0 1 0 1
I3
1 1 1 1 1
I2
0 0 0 1 1
I1
0 1 1 0 0
0
0 0 0 0 0
RB
0 0 1/0 1/0 1/0
RA
0 0 1/0 1/0 1/0
0
0 0 0 0 0
0
0 0 0 0 0
Operation
Read the contents of the Wiper Counter Register Write new value to the Wiper Counter Register Read the contents of the Data Register pointed to RB-RA Write new value to the Data Register pointed to RB-RA Transfer the contents of the Data Register pointed to by RB-RA to the Wiper Counter Register Transfer the contents of the Wiper Counter Register to the Data Register pointed to by RB-RA Read the status of the internal write cycle, by checking the WIP bit (read status register).
0
1
1
1
0
1/0
1/0
0
0
1
0
1
0
0
0
0
0
1
Note:
(1) 1/0 = data is one or zero
INSTRUCTION FORMAT Read Wiper Counter Register (WCR)
CS Falling Edge 0 Device Type Identifier 1 0 1 Device Addresses R/ W = 1 0 A1 A0 Instruction Opcode 1 0 0 0 Register Addresses 0 0 0 0 Wiper Position (Sent by X9111 on SO) W XXXXXXC R 9 W C R 8 W C R 7 Wiper Position (sent by X9111 on SO) W C R 6 W C R 5 W C R 4 W C R 3 W C R 2 W C R 1 CS W Rising C Edge R 0
Write Wiper Counter Register (WCR)
CS Falling Edge 0 Device Type Identifier 1 0 1 Device Addresses R/ W = 0 0 A1 A0 Instruction Opcode 1 0 1 0 Register Addresses 0 0 0 0 Wiper Position (Sent by Master on SI) W XXXXXXC R 9 W C R 8 W C R 7 Wiper Position (Sent by Master on SI) W C R 6 W C R 5 W C R 4 W C R 3 W C R 2 W C R 1 CS W Rising C Edge R 0
Read Data Register (DR)
CS Falling Edge 0 Device Type Identifier 1 0 1 Device Addresses R/ W = 1 0 A1 A0 Instruction Opcode 1 0 1 Register Addresses 0 Wiper Position (Sent by X9111 on SO) W XXXXXXC R 9 W C R 8 W C R 7 Wiper Position (sent by X9111 on SO) W C R 6 W C R 5 W C R 4 W C R 3 W C R 2 W C R 1 CS W Rising C Edge R 0
0 RB RA 0
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X9111 - Preliminary Information
Write Data Register (DR)
Device Type Identifier CS Falling Edge 0 Device Addresses R/ W = 0 Instruction Opcode Register Addresses Wiper Position or Data (Sent by Master on SI) W 0XXXXXXC R 9 W C R 8 W C R 7 Wiper Position or Data (Sent by Master on SI) W C R 6 W C R 5 W C R 4 W C R 3 W C R 2 W C R 1 CS W Rising C Edge R 0
1
0
1
0 A1 A0
1 1 0 0 RB RA 0
Transfer Data Register (DR) to Wiper Counter Register (WCR)
CS Falling Edge 0 Device Type Identifier 1 0 1 Device Addresses 0 A1 A0 R/ W = 1 Instruction Opcode 1 1 0 Register Addresses 0 CS Rising Edge
0 RB RA 0
Transfer Wiper Counter Register (WCR) to Data Register (DR)
Device Type Identifier CS Falling Edge 0 1 0 1 Device Addresses 0 A1 A0 R/ W = 0 Instruction Opcode 1 1 1 0 RB Register Addresses RA 0 0 CS Rising Edge
HIGH-VOLTAGE WRITE CYCLE
Read Status Register (SR)
Device Type Identifier CS Falling Edge 0 1 0 1 Device Addresses 0 A1 A0 R/ W = 1 Instruction Opcode 0 1 0 0 Register Addresses 0 0 0 1 Status Data (Sent by Slave on SO) XXXXXXXX 0 Status Data (Sent by Slave on SO) 0 0 0 0 0 0 WIP CS Rising Edge
Notes: (1) "A0 and A1": stand for the device address sent by the master. (2) WCRx refers to wiper position data in the Wiper Counter Register (3) "X": Don't Care.
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HIGH-VOLTAGE WRITE CYCLE
X9111 - Preliminary Information
ABSOLUTE MAXIMUM RATINGS Temperature under bias.................... -65C to +135C Storage temperature......................... -65C to +150C Voltage on SCK any address input with respect to VSS ................................. -1V to +7V V = | (VH-VL) | ......................................................5V Lead temperature (soldering, 10 seconds) ........ 300C IW (10 seconds) ..................................................6mA COMMENT Stresses above those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress rating only; the functional operation of the device (at these or any other conditions above those listed in the operational sections of this specification) is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
RECOMMENDED OPERATING CONDITIONS Temp
Commercial Industrial
Min.
0C -40C
Max.
+70C +85C
Device
X9111 X9111-2.7
Supply Voltage (VCC) Limits
5V 10% 2.7V to 5.5V
ANALOG CHARACTERISTICS (Over recommended industrial operation conditions unless otherwise stated.) Limits Symbol
RTOTAL
Parameter
End to End Resistance End to End Resistance Tolerance Power Rating
Min.
Typ.
100
Max.
20 50 3
Units
k % mW mA V dBV %
Test Conditions
25C, each pot Wiper Current = 50A, VCC = 5V Wiper Current = 50A, VCC = 3V VSS = 0V Ref: 1V Rw(n)(actual) - Rw(n)(expected), where n=8 to 1006 Rw(n)(actual) - Rw(n)(expected)(6) Rw(m + 1) - [Rw(m) + MI], where m=8 to 1006 Rw(m + 1) - [Rw(m) + MI](6)
IW RW
Wiper Current Wiper Resistance 40 150
110 300 5
VTERM
Voltage on any RH or RL Pin Noise Resolution Absolute Linearity
(1)
VSS -120 1.6
1 1.5 2.0 0.5 0.5 1.0 20 10/10/25
MI(3) MI(3) MI(3) MI(3) ppm/C ppm/C pF
Relative
Linearity(2)
Temperature Coefficient of RTOTAL Ratiometric Temp. Coefficient CH/CL/CW Potentiometer Capacitancies
300
See Macro model
Notes: (1) Absolute linearity is utilized to determine actual wiper voltage versus expected voltage as determined by wiper position when used as a potentiometer. (2) Relative linearity is utilized to determine the actual change in voltage between two successive tap positions when used as a potentiometer. It is a measure of the error in step size. (3) MI = RTOT / 1023 or (RH - RL) / 1023, single pot (4) n = 0, 1, 2, ...,1023; m =0, 1, 2, ..., 1022. (5) ESD Rating on RH, RL, RW pins is 1.5KV (HBM, 1.0A leakage maximum), ESD rating on all other pins is 2.0KV.
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X9111 - Preliminary Information
D.C. OPERATING CHARACTERISTICS (Over the recommended operating conditions unless otherwise specified.) Limits Symbol
ICC1 ICC2 ISB ILI ILO VIH VIL VOL VOL VOL
Parameter
VCC supply current (active) VCC supply current (nonvolatile write) VCC current (standby) Input leakage current Output leakage current Input HIGH voltage Input LOW voltage Output LOW voltage Output LOW voltage Output LOW voltage
Min.
Typ.
Max.
400
Units
A mA A A A V V V V V IOL = 3mA
Test Conditions
fSCK = 2.5 MHz, SO = Open, VCC=5.5V Other Inputs = VSS fSCK = 2.5MHz, SO = Open, VCC=5.5V Other Inputs = VSS SCK = SI = VSS, Addr. = VSS, CS = VCC = 5.5V VIN = VSS to VCC VOUT = VSS to VCC
1
5 3 10 10
VCC x 0.7 -1 VCC - 0.8 VCC - 0.4
VCC + 1 VCC x 0.3 0.4
IOH = -1mA, VCC +3V IOH = -0.4mA, VCC +3V
ENDURANCE AND DATA RETENTION Parameter
Minimum Endurance Data Retention
Min.
100,000 100
Units
Data changes per bit per register years
CAPACITANCE Symbol
CIN/OUT COUT CIN
(6) (6) (6)
Test
Input/Output capacitance (SI) Output capacitance (SO) Input capacitance (A0, CS, WP, HOLD, and SCK)
Max.
8 8 6
Units
pF pF pF
Test Conditions
VOUT = 0V VOUT = 0V VIN = 0V
POWER-UP TIMING Symbol
tr VCC tPUR tPUW
(6) (7) (7)
Parameter
VCC power-up rate Power-up to initiation of read operation Power-up to initiation of write operation
Min.
0.2
Max.
50 1 50
Units
V/ms ms ms
Notes: (6) This parameter is not 100% tested (7) tPUR and tPUW are the delays required from the time the (last) power supply (VCC-) is stable until the specific instruction can be issued. These parameters are not 100% tested.
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X9111 - Preliminary Information
A.C. TEST CONDITIONS Input pulse levels
Input rise and fall times Input and output timing level VCC x 0.1 to VCC x 0.9 10ns VCC x 0.5
EQUIVALENT A.C. LOAD CIRCUIT
5V 1462 SO pin 2714 100pF SO pin 1217 100pF 3V 1382 RH CL 10pF CW 25pF RW CL 10pF SPICE Macromodel RTOTAL
RL
AC TIMING Symbol
fSCK tCYC tWH tWL tLEAD tLAG tSU tH tRI tFI tDIS tV tHO tRO tFO tHOLD tHSU tHH tHZ tLZ TI tCS tWPASU tWPAH SSI/SPI clock frequency SSI/SPI clock cycle time SSI/SPI clock high time SSI/SPI clock low time Lead time Lag time SI, SCK, HOLD and CS input setup time SI, SCK, HOLD and CS input hold time SI, SCK, HOLD and CS input rise time SI, SCK, HOLD and CS input fall time SO output disable time SO output valid time SO output hold time SO output rise time SO output fall time HOLD time HOLD setup time HOLD hold time HOLD low to output in high Z HOLD high to output in low Z Noise suppression time constant at SI, SCK, HOLD and CS inputs CS deselect time WP, A0, A1 setup time WP, A0, A1 hold time 100 0 0 400 50 50 100 100 20 0 50 50 0 400 150 150 150 150 50 50 50 50 500 100
Parameter
Min.
Max.
2.0
Units
MHz ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns
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X9111 - Preliminary Information
HIGH-VOLTAGE WRITE CYCLE TIMING Symbol
tWR
Parameter
High-voltage write cycle time (store instructions)
Typ.
5
Max.
10
Units
ms
XDCP TIMING Symbol
tWRPO tWRL
Parameter
Wiper response time after the third (last) power supply is stable Wiper response time after instruction issued (all load instructions)
Min.
5 5
Max.
10 10
Units
s s
SYMBOL TABLE
WAVEFORM INPUTS Must be steady May change from Low to High May change from High to Low Don't Care: Changes Allowed N/A OUTPUTS Will be steady Will change from Low to High Will change from High to Low Changing: State Not Known Center Line is High Impedance
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X9111 - Preliminary Information
TIMING DIAGRAMS Input Timing
tCS CS tLEAD SCK tSU SI MSB tH tWL tCYC ... tWH ... tFI LSB tRI tLAG
SO
High Impedance
Output Timing
CS
SCK tV SO MSB tHO
... tDIS ... LSB
SI
ADDR
Hold Timing
CS tHSU SCK tRO SO tHZ SI tHOLD HOLD tLZ tFO tHH ...
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X9111 - Preliminary Information
XDCP Timing (for All Load Instructions)
CS
SCK
... MSB ...
tWRL LSB
SI
RW
SO
High Impedance
Write Protect and Device Address Pins Timing
CS WP A0 A1 tWPASU
(Any Instruction) tWPAH
.
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X9111 - Preliminary Information
APPLICATIONS INFORMATION Basic Configurations of Electronic Potentiometers
VR +VR
RW
I Three terminal Potentiometer; Variable voltage divider Two terminal Variable Resistor; Variable current
Application Circuits Noninverting Amplifier
VS + - VO VIN 317 R1 R2 R1 VO (REG)
Voltage Regulator
Iadj R2
VO = (1+R2/R1)VS
VO (REG) = 1.25V (1+R2/R1)+Iadj R2
Offset Voltage Adjustment
R1 VS 100K - + TL072 10K 10K +12V 10K -12V VO R2
Comparator with Hysterisis
VS - + VO
VUL = {R1/(R1+R2)} VO(max) RLL = {R1/(R1+R2)} VO(min)
}
R1
}
R2 17 of 21
REV 1.1.15 5/9/03
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Characteristics subject to change without notice.
X9111 - Preliminary Information
Application Circuits (Continued) Attenuator
C VS R1 - VS R3 R4 R1 = R2 = R3 = R4 = 10k R1 + VO R2 R + - VO
Filter
R2
VO = G VS -1/2 G +1/2
GO = 1 + R2/R1 fc = 1/(2RC)
Inverting Amplifier
R1 R2
Equivalent L-R Circuit
}
VS
}
- + VO
C1 VS
R2 + -
VO = G VS G = - R2/R1
ZIN
R1 R3
ZIN = R2 + s R2 (R1 + R3) C1 = R2 + s Leq (R1 + R3) >> R2
Function Generator
C
- +
R2
R1 - +
} RA } RB
frequency R1, R2, C amplitude RA, RB
REV 1.1.15 5/9/03
www.xicor.com
Characteristics subject to change without notice.
18 of 21
X9111 - Preliminary Information
15-Bump Chip Scale Package (CSP B15) Package Outline Drawing
a d
9111TBZ YWW I Lot#
A3
A2 B2 C2 D2 E2
A1 B1 C1 D1 E1
f
B3 C3 D3
b
k m l
E3
j
e
Top View (Sample Marking)
Bottom View (Bumped Side)
Side View
e
Side View
c
Package Dimensions
Symbol a b c d e f j k l m Min 2.535 3.272 0.644 0.444 0.200 0.300 Millimeters Nominal 2.565 3.302 0.677 0.457 0.220 0.320 0.5 0.5 0.783 0.651 Max 2.595 3.332 0.710 0.470 0.240 0.340
Ball Matrix
3 A B C D E SO A0 CS SCK SI 2 Vcc NC* NC* WP Vss 1 RL RH RW HOLD A1
Package Width Package Length Package Height Body Thickness Ball Height Ball Diameter Ball Pitch - Width Ball Pitch - Length Ball to Edge Spacing - Width Ball to Edge Spacing - Length
* True no-connect bump
0.758 0.626
0.808 0.676
REV 1.1.15 5/9/03
www.xicor.com
Characteristics subject to change without notice.
19 of 21
X9111 - Preliminary Information
PACKAGING INFORMATION
14-Lead Plastic, TSSOP, Package Code V14
.025 (.65) BSC
.169 (4.3) .252 (6.4) BSC .177 (4.5)
.193 (4.9) .200 (5.1)
.041 (1.05) .0075 (.19) .0118 (.30) .002 (.05) .006 (.15)
.010 (.25) Gage Plane 0 - 8 .019 (.50) .029 (.75) Detail A (20X) Seating Plane
.031 (.80) .041 (1.05) See Detail "A"
NOTE: ALL DIMENSIONS IN INCHES (IN PARENTHESES IN MILLIMETERS)
REV 1.1.15 5/9/03
www.xicor.com
Characteristics subject to change without notice.
20 of 21
X9111 - Preliminary Information
ORDERING INFORMATION X9111 Device Y P T V VCC Limits Blank = 5V 10% -2.7 = 2.7 to 5.5V Temperature Range Blank = Commercial = 0C to +70C I = Industrial = -40C to +85C Package V14 = 14-Lead TSSOP B15 = 15-Lead CSP Potentiometer Organization Pot T= 100K
LIMITED WARRANTY
(c)Xicor, Inc. 2003 Patents Pending
Devices sold by Xicor, Inc. are covered by the warranty and patent indemnification provisions appearing in its Terms of Sale only. Xicor, Inc. makes no warranty, express, statutory, implied, or by description regarding the information set forth herein or regarding the freedom of the described devices from patent infringement. Xicor, Inc. makes no warranty of merchantability or fitness for any purpose. Xicor, Inc. reserves the right to discontinue production and change specifications and prices at any time and without notice. Xicor, Inc. assumes no responsibility for the use of any circuitry other than circuitry embodied in a Xicor, Inc. product. No other circuits, patents, or licenses are implied. TRADEMARK DISCLAIMER: Xicor and the Xicor logo are registered trademarks of Xicor, Inc. AutoStore, Direct Write, Block Lock, SerialFlash, MPS, and XDCP are also trademarks of Xicor, Inc. All others belong to their respective owners. U.S. PATENTS Xicor products are covered by one or more of the following U.S. Patents: 4,326,134; 4,393,481; 4,404,475; 4,450,402; 4,486,769; 4,488,060; 4,520,461; 4,533,846; 4,599,706; 4,617,652; 4,668,932; 4,752,912; 4,829,482; 4,874,967; 4,883,976; 4,980,859; 5,012,132; 5,003,197; 5,023,694; 5,084,667; 5,153,880; 5,153,691; 5,161,137; 5,219,774; 5,270,927; 5,324,676; 5,434,396; 5,544,103; 5,587,573; 5,835,409; 5,977,585. Foreign patents and additional patents pending. LIFE RELATED POLICY In situations where semiconductor component failure may endanger life, system designers using this product should design the system with appropriate error detection and correction, redundancy and back-up features to prevent such an occurrence. Xicor's products are not authorized for use in critical components in life support devices or systems. 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and whose failure to perform, when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user. 2. A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness.
REV 1.1.15 5/9/03
www.xicor.com
Characteristics subject to change without notice.
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