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CAT5221
Dual Digitally Programmable Potentiometers (DPPTM) with 64 Taps and 2-wire Interface
FEATURES
s Two linear-taper digitally programmable
H
GEN FR ALO
EE
LE
A D F R E ETM
s Automatic recall of saved wiper settings at
potentiometers
s 64 resistor taps per potentiometer s End to end resistance 2.5k, 10k, 50k or 100k s Potentiometer control and memory access via
power up
s 2.5 to 6.0 volt operation s Standby current less than 1A s 1,000,000 nonvolatile WRITE cycles s 100 year nonvolatile memory data retention s 20-lead SOIC and TSSOP packages s Industrial temperature ranges
2-wire interface (I2C like)
s Low wiper resistance, typically 80 s Nonvolatile memory storage for up to four wiper
settings for each potentiometer
DESCRIPTION
The CAT5221 is two Digitally Programmable Potentiometers (DPPsTM) integrated with control logic and 16 bytes of NVRAM memory. Each DPP consists of a series of 63 resistive elements connected between two externally accessible end points. The tap points between each resistive element are connected to the wiper outputs with CMOS switches. A separate 6-bit control register (WCR) independently controls the wiper tap switches for each DPP. Associated with each wiper control register are four 6-bit non-volatile memory data registers (DR) used for storing up to four wiper settings. Writing to the wiper control register or any of the non-volatile data registers is via a 2-wire serial bus (I2C-like). On powerup, the contents of the first data register (DR0) for each of the four potentiometers is automatically loaded into its respective wiper control register (WCR). The CAT5221 can be used as a potentiometer or as a two terminal, variable resistor. It is intended for circuit level or system level adjustments in a wide variety of applications.
PIN CONFIGURATION
SOIC Package (J, W) TSSOP Package (U, Y) RW0 RL0 RH0 A0 A2 RW1 RL1 RH1 SDA GND 1 2 3 4 5 6 7 8 9 10 20 19 18 17 CAT 16 5221 15 14 13 12 11 VCC NC NC NC A1 A3 SCL NC NC NC
FUNCTIONAL DIAGRAM
RH0 RH1
SCL SDA
2-WIRE BUS INTERFACE
WIPER CONTROL REGISTERS R W0
R W1 A0 A1 A2 A3 CONTROL LOGIC NONVOLATILE DATA REGISTERS
RL0
RL1
(c) 2004 by Catalyst Semiconductor, Inc. Characteristics subject to change without notice
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Document No. 2113, Rev. I
CAT5221
PIN DESCRIPTION
Pin (SOIC)
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
PIN DESCRIPTIONS
SCL: Serial Clock The CAT5221 serial clock input pin is used to clock all data transfers into or out of the device. SDA: Serial Data The CAT5221 bidirectional serial data pin is used to transfer data into and out of the device. The SDA pin is an open drain output and can be wireOR'd with the other open drain or open collector outputs. A0, A1, A2, A3: Device Address Inputs These inputs set the device address when addressing multiple devices. A total of sixteen devices can be addressed on a single bus. A match in the slave address must be made with the address input in order to initiate communication with the CAT5221. RH, RL: Resistor End Points The two sets of RH and RL pins are equivalent to the terminal connections on a mechanical potentiometer. Wiper RW: The two RW pins are equivalent to the wiper terminal of a mechanical potentiometer.
Name
RW0 RL0 RH0 A0 A2 RW1 RL1 RH1 SDA GND NC NC NC SCL A3 A1 NC NC NC VCC
Function
Wiper Terminal for Potentiometer 0 Low Reference Terminal for Potentiometer 0 High Reference Terminal for Potentiometer 0 Device Address, LSB Device Address Wiper Terminal for Potentiometer 1 Low Reference Terminal for Potentiometer 1 High Reference Terminal for Potentiometer 1 Serial Data Input/Output Ground No Connect No Connect No Connect Bus Serial Clock Device Address Device Address No Connect No Connect No Connect Supply Voltage
DEVICE OPERATION
The CAT5221 is two resistor arrays integrated with 2wire serial interface logic, two 6-bit wiper control registers and eight 6-bit, non-volatile memory data registers. Each resistor array contains 63 separate resistive elements connected in series. The physical ends of each array are equivalent to the fixed terminals of a mechanical potentiometer (RH and RL). RH and RL are symmetrical and may be interchanged. The tap positions between and at the ends of the series resistors are connected to the output wiper terminals (RW) by a CMOS transistor switch. Only one tap point for each potentiometer is connected to its wiper terminal at a time and is determined by the value of the wiper control register. Data can be read or written to the wiper control registers or the non-volatile memory data registers via the 2-wire bus. Additional instructions allow data to be transferred between the wiper control registers and each respective potentiometer's non-volatile data registers. Also, the device can be instructed to operate in an "increment/decrement" mode.
Document No. 2113, Rev. I
2
CAT5221
ABSOLUTE MAXIMUM RATINGS*
Temperature Under Bias .................. -55C to +125C Storage Temperature ........................ -65C to +150C Voltage on any Pin with Respect toVSS(1)(2) ................. -2.0V to +VCC +2.0V VCC with Respect to Ground ................ -2.0V to +7.0V Package Power Dissipation Capability (TA = 25C) ................................... 1.0W Lead Soldering Temperature (10 secs) ............ 300C Wiper Current .................................................. +12mA
Note:
*COMMENT Stresses above those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions outside of those listed in the operational sections of this specification is not implied. Exposure to any absolute maximum rating for extended periods may affect device performance and reliability.
Recommended Operating Conditions: VCC = +2.5V to +6.0V Temperature Industrial Min -40C Max 85C
(1) The minimum DC input voltage is -0.5V. During transitions, inputs may undershoot to -2.0V for periods of less than 20 ns. Maximum DC voltage on output pins is VCC +0.5V, which may overshoot to VCC +2.0V for periods of less than 20 ns. (2) Latch-up protection is provided for stresses up to 100 mA on address and data pins from -1V to VCC +1V.
POTENTIOMETER CHARACTERISTICS Over recommended operating conditions unless otherwise stated.
Symbol RPOT RPOT RPOT RPOT Parameter Potentiometer Resistance (-00) Potentiometer Resistance (-50) Potentiometer Resistance (-10) Potentiometer Resistance (-2.5) Potentiometer Resistance Tolerance RPOT Matching Power Rating IW RW RW VTERM VN Wiper Current Wiper Resistance Wiper Resistance Voltage on any RH or RL Pin Noise Resolution Absolute Linearity (2) Relative Linearity (3) TCRPOT TCRATIO CH/CL/CW fc Temperature Coefficient of RPOT Ratiometric Temp. Coefficient Potentiometer Capacitances Frequency Response Rw(n)(actual)-R(n)(expected)(5) Rw(n+1)-[Rw(n)+LSB](5)
(1) (1) (1)
Test Conditions
Min
Typ 100 50 10 2.5
Max
Units k k k k
+20 1 25C, each pot 50 +6 IW = +3mA @ VCC =3V IW = +3mA @ VCC = 5V VSS = 0V
(1)
% % mW mA V nV/ Hz %
300 80 GND TBD 1.6 +1 +0.2 +300 20 10/10/25 0.4 150 VCC
LSB (4) LSB (4) ppm/C ppm/C pF MHz
RPOT =
50k(1)
Note: (1) This parameter is tested initially and after a design or process change that affects the parameter. (2) Absolute linearity is utilitzed to determine actual wiper voltage versus expected voltage as determined by wiper position when used as a potentiometer. (3) 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. (4) LSB = RTOT / 63 or (RH - RL) / 63, single pot (5) n = 0, 1, 2, ..., 63
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Document No. 2113, Rev. I
CAT5221
D.C. OPERATING CHARACTERISTICS
Over recommended operating conditions unless otherwise stated.
Symbol ICC ISB ILI ILO VIL VIH VOL1
Parameter Power Supply Current Standby Current (VCC = 5.0V) Input Leakage Current Output Leakage Current Input Low Voltage Input High Voltage Output Low Voltage (VCC = 3.0V)
Test Conditions fSCL = 400kHz VIN = GND or VCC; SDA Open VIN = GND to VCC VOUT = GND to VCC
Min
Typ
Max 1 1 10 10
Units mA A A A V V V
-1 VCC x 0.7 IOL = 3 mA
VCC x 0.3 VCC + 1.0 0.4
CAPACITANCE TA = 25C, f = 1.0 MHz, VCC = 5V Symbol Test CI/O
(1)
Conditions VI/O = 0V VIN = 0V
Min
Typ
Max 8 6
Units pF pF
Input/Output Capacitance (SDA) Input Capacitance (A0, A1, A2, A3, SCL)
CIN(1)
A.C. CHARACTERISTICS
Over recommended operating conditions unless otherwise stated.
Symbol fSCL TI(1) tAA tBUF(1) tHD:STA tLOW tHIGH tSU:STA tHD:DAT tSU:DAT tR(1) tF(1) tSU:STO tDH
Parameter Clock Frequency Noise Suppression Time Constant at SCL, SDA Inputs SLC Low to SDA Data Out and ACK Out Time the Bus Must Be Free Before a New Transmission Can Start Start Condition Hold Time Clock Low Period Clock High Period Start Condition SetupTime (For a Repeated Start Condition) Data in Hold Time Data in Setup Time SDA and SCL Rise Time SDA and SCL Fall Time Stop Condition Setup Time Data Out Hold Time
Min
Typ
Max 400 50 0.9
Units kHz ns s s s s s s ns ns s ns s ns
1.2 0.6 1.2 0.6 0.6 0 100 0.3 300 0.6 50
POWER UP TIMING (1)
Over recommended operating conditions unless otherwise stated.
Symbol tPUR tPUW
Parameter Power-up to Read Operation Power-up to Write Operation
Min
Typ
Max 1 1
Units ms ms
Note: (1) This parameter is tested initially and after a design or process change that affects the parameter.
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CAT5221
WRITE CYCLE LIMITS
Over recommended operating conditions unless otherwise stated.
Symbol tWR
Parameter Write Cycle Time
Min
Typ
Max 5
Units ms
The write cycle is the time from a valid stop condition of a write sequence to the end of the internal program/erase cycle. During the write cycle, the bus interface circuits are disabled, SDA is allowed to remain high, and the device does not respond to its slave address.
RELIABILITY CHARACTERISTICS
Over recommended operating conditions unless otherwise stated.
Symbol NEND(1) TDR
(1)
Parameter Endurance Data Retention ESD Susceptibility Latch-Up
Reference Test Method MIL-STD-883, Test Method 1033 MIL-STD-883, Test Method 1008 MIL-STD-883, Test Method 3015 JEDEC Standard 17
Min 1,000,000 100 2000 100
Typ
Max
Units Cycles/Byte Years Volts mA
VZAP(1) ILTH(1)(2)
Note: (1) This parameter is tested initially and after a design or process change that affects the parameter. (2) tPUR and tPUW are the delays required from the time VCC is stable until the specified operation can be initiated.
Figure 1. Bus Timing
tF tLOW
tHIGH tLOW
tR
SCL tSU:STA tHD:STA tHD:DAT tSU:DAT tSU:STO
SDA IN tAA SDA OUT tDH tBUF
Figure 2. Write Cycle Timing
SCL
SDA
8TH BIT BYTE n
ACK tWR STOP CONDITION START CONDITION ADDRESS
Figure 3. Start/Stop Timing
SDA
SCL START BIT STOP BIT
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Document No. 2113, Rev. I
CAT5221
SERIAL BUS PROTOCOL
The following defines the features of the 2-wire bus protocol: (1) Data transfer may be initiated only when the bus is not busy. (2) During a data transfer, the data line must remain stable whenever the clock line is high. Any changes in the data line while the clock is high will be interpreted as a START or STOP condition. The device controlling the transfer is a master, typically a processor or controller, and the device being controlled is the slave. The master will always initiate data transfers and provide the clock for both transmit and receive operations. Therefore, the CAT5221 will be considered a slave device in all applications. START Condition The START Condition precedes all commands to the device, and is defined as a HIGH to LOW transition of SDA when SCL is HIGH. The CAT5221 monitors the SDA and SCL lines and will not respond until this condition is met. STOP Condition A LOW to HIGH transition of SDA when SCL is HIGH determines the STOP condition. All operations must end with a STOP condition.
the particular slave device it is requesting. The four most significant bits of the 8-bit slave address are fixed as 0101 for the CAT5221 (see Figure 5). The next four significant bits (A3, A2, A1, A0) are the device address bits and define which device the Master is accessing. Up to sixteen devices may be individually addressed by the system. Typically, +5V and ground are hard-wired to these pins to establish the device's address. After the Master sends a START condition and the slave address byte, the CAT5221 monitors the bus and responds with an acknowledge (on the SDA line) when its address matches the transmitted slave address. Acknowledge After a successful data transfer, each receiving device is required to generate an acknowledge. The Acknowledging device pulls down the SDA line during the ninth clock cycle, signaling that it received the 8 bits of data. The CAT5221 responds with an acknowledge after receiving a START condition and its slave address. If the device has been selected along with a write operation, it responds with an acknowledge after receiving each 8-bit byte. When the CAT5221 is in a READ mode it transmits 8 bits of data, releases the SDA line, and monitors the line for an acknowledge. Once it receives this acknowledge, the CAT5221 will continue to transmit data. If no acknowledge is sent by the Master, the device terminates data transmission and waits for a STOP condition.
DEVICE ADDRESSING
The bus Master begins a transmission by sending a START condition. The Master then sends the address of
Figure 4. Acknowledge Timing
SCL FROM MASTER
1
8
9
DATA OUTPUT FROM TRANSMITTER
DATA OUTPUT FROM RECEIVER START ACKNOWLEDGE
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CAT5221
WRITE OPERATIONS
In the Write mode, the Master device sends the START condition and the slave address information to the Slave device. After the Slave generates an acknowledge, the Master sends the instruction byte that defines the requested operation of CAT5221. The instruction byte consist of a four-bit opcode followed by two register selection bits and two pot selection bits. After receiving another acknowledge from the Slave, the Master device transmits the data to be written into the selected register. The CAT5221 acknowledges once more and the Master generates the STOP condition, at which time if a nonvolatile data register is being selected, the device begins an internal programming cycle to non-volatile memory. While this internal cycle is in progress, the device will not respond to any request from the Master device.
Acknowledge Polling The disabling of the inputs can be used to take advantage of the typical write cycle time. Once the stop condition is issued to indicate the end of the host's write operation, the CAT5221 initiates the internal write cycle. ACK polling can be initiated immediately. This involves issuing the start condition followed by the slave address. If the CAT5221 is still busy with the write operation, no ACK will be returned. If the CAT5221 has completed the write operation, an ACK will be returned and the host can then proceed with the next instruction operation.
Figure 5. Slave Address Bits
CAT5221
0
1
0
1
A3
A2
A1
A0
* **
A0, A1, A2 and A3 correspond to pin A0, A1, A2 and A3 of the device. A0, A1, A2 and A3 must compare to its corresponding hard wired input pins.
Figure 6. Write Timing
BUS ACTIVITY: MASTER SDA LINE
S T A R T S
SLAVE/DPP ADDRESS
Fixed Variable
INSTRUCTION BYTE
op code
Pot/WCR Data Register Address Address
DR WCR DATA
S T O P P
A C K
A C K
A C K
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Document No. 2113, Rev. I
CAT5221
INSTRUCTION AND REGISTER DESCRIPTION
Instructions SLAVE ADDRESS BYTE The first byte sent to the CAT5221 from the master/ processor is called the Slave/DPP Address Byte. The most significant four bits of the slave address are a device type identifier. These bits for the CAT5221 are fixed at 0101[B] (refer to Table 1). The next four bits, A3 - A0, are the internal slave address and must match the physical device address which is defined by the state of the A3 - A0 input pins for the CAT5221 to successfully continue the command sequence. Only the device which slave address matches the incoming device address sent by the master executes the instruction. The A3 - A0 inputs can be actively driven by CMOS input signals or tied to VCC or VSS. Table 1. Identification Byte Format
Device Type Identifier
INSTRUCTION BYTE The next byte sent to the CAT5221 contains the instruction and register pointer information. The four most significant bits used provide the instruction opcode I [3:0]. The P0 bit points to one of the Wiper Control Registers. The least two significant bits, R1 and R0, point to one of the four data registers of each associated potentiometer. The format is shown in Table 2.
Data Register Selection Data Register Selected DR0 DR1 DR2 DR3 R1 0 0 1 1 R0 0 1 0 1
Slave Address
ID3 0 (MSB)
ID2 1
ID1 0
ID0 1
A3
A2
A1
A0 (LSB)
Table 2. Instruction Byte Format
Instruction Opcode Data Register Selection
WCR/Pot Selection
I3 (MSB)
I2
I1
I0
0
P0
R1
R0 (LSB)
Document No. 2113, Rev. I
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CAT5221
WIPER CONTROL AND DATA REGISTERS
Wiper Control Register (WCR) The CAT5221 contains two 6-bit Wiper Control Registers, one for each potentiometer. The Wiper Control Register output is decoded to select one of 64 switches along its resistor array. The contents of the WCR can be altered in four ways: it may be written by the host via Write Wiper Control Register instruction; it may be written by transferring the contents of one of four associated Data Registers via the XFR Data Register instruction, it can be modified one step at a time by the Increment/decrement instruction (see Instruction section for more details). Finally, it is loaded with the content of its data register zero (DR0) upon power-up. The Wiper Control Register is a volatile register that loses its contents when the CAT5221 is powered-down. Although the register is automatically loaded with the value in DR0 upon power-up, this may be different from the value present at power-down. Data Registers (DR) Each potentiometer has four 6-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 associated Wiper Control Register. Any data changes in one of the Data Registers is a non-volatile operation and will take a maximum of 5ms. If the application does not require storage of multiple settings for the potentiometer, the Data Registers can be used as standard memory locations for system parameters or user preference data.
INSTRUCTIONS
Four of the nine instructions are three bytes in length. These instructions are: -- Read Wiper Control Register - read the current wiper position of the selected potentiometer in the WCR -- Write Wiper Control Register - change current wiper position in the WCR of the selected potentiometer -- Read Data Register - read the contents of the selected Data Register -- Write Data Register - write a new value to the selected Data Register The basic sequence of the three byte instructions is illustrated in Figure 8. These three-byte instructions
Table 3. Instruction Set
Instruction Set Instruction Read Wiper Control Register Write Wiper Control Register
Read Data Register Write Data Register XFR Data Register to Wiper Control Register XFR Wiper Control Register to Data Register Global XFR Data Registers to Wiper Control Registers Global XFR Wiper Control Registers to Data Register Increment/Decrement Wiper Control Register
Note: 1/0 = data is one or zero I3 I2 I1 I0 0 WCR0/ P0 R1 R0
Operation
Read the contents of the Wiper Control Register pointed to by P0 Write new value to the Wiper Control Register pointed to by P0 Read the contents of the Data Register pointed to by P0 and R1-R0 Write new value to the Data Register pointed to by P0 and R1-R0 Transfer the contents of the Data Register pointed to by P0 and R1-R0 to its associated Wiper Control Register Transfer the contents of the Wiper Control Register pointed to by P0 to the Data Register pointed to by R1-R0 Transfer the contents of the Data Registers pointed to by R1-R0 of all four pots to their respective Wiper Control Register s Transfer the contents of both Wiper Control Registers to their respective data Registers pointed to by R1-R0 of all four pots Enable Increment/decrement of the Control Latch pointed to by P0
1 1 1 1 1
0 0 0 1 1
0 1 1 0 0
1 0 1 0 1
0 0 0 0 0
1/0 1/0 1/0 1/0 1/0
0 0 1/0 1/0 1/0
0 0 1/0 1/0 1/0
1
1
1
0
0
1/0
1/0
1/0
0
0
0
1
0
0
1/0
1/0
1
0
0
0
0
0
1/0
1/0
0
0
1
0
0
1/0
0
0
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Document No. 2113, Rev. I
CAT5221
exchange data between the WCR and one of the Data Registers. The WCR controls the position of the wiper. 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 non-volatile memory and takes a maximum of tWR to complete. The transfer can occur between one of the four potentiometers and one of its associated registers; or the transfer can occur between all potentiometers and one associated register. Four instructions require a two-byte sequence to complete, as illustrated in Figure 7. These instructions transfer data between the host/processor and the CAT5221; either between the host and one of the data registers or directly between the host and the Wiper Control Register. These instructions are: -- XFR Data Register to Wiper Control Register This transfers the contents of one specified Data Register to the associated Wiper Control Register. -- XFR Wiper Control Register to Data Register This transfers the contents of the specified Wiper Control Register to the specified associated Data Register.
-- Global XFR Data Register to Wiper Control Register This transfers the contents of all specified Data Registers to the associated Wiper Control Registers. -- Global XFR Wiper Counter Register to Data Register This transfers the contents of all Wiper Control Registers to the specified associated Data Registers. INCREMENT/DECREMENT COMMAND The final command is Increment/Decrement (Figure 5 and 9). The Increment/Decrement command is different from the other commands. Once the command is issued and the CAT5221 has responded with an acknowledge, the master can clock the selected wiper up and/or down in one segment steps; thereby providing a fine tuning capability to the host. For each SCL clock pulse (tHIGH) while SDA is HIGH, the selected wiper will move one resistor segment towards the RH terminal. Similarly, for each SCL clock pulse while SDA is LOW, the selected wiper will move one resistor segment towards the RL terminal. See Instructions format for more detail.
Figure 7. Two-Byte Instruction Sequence
SDA 0 1 0 1 A I3 C K I2 I1 I0 0 P0 R1 R0 Pot/WCR Register Address Address A C K S T O P
S ID3 ID2 ID1 ID0 A3 A2 A1 A0 T A Internal R Device ID Address T
Instruction Opcode
Figure 8. Three-Byte Instruction Sequence
SDA 0 1 0 1 A2 A0 A I3 C K Internal Address A1 I2 I1 I0 R1 R0 A C K Pot/WCR Data Address Register Address 0 P0 D7 D6 D5 D4 D3 D2 D1 D0 WCR[7:0] or Data Register D[7:0] A C K S T O P
S ID3 ID2 ID1 ID0 A3 T A Device ID R T
Instruction Opcode
Figure 9. Increment/Decrement Instruction Sequence
SDA S T A R T 0 1 0 1 A3 A2 A1 A0 Internal Address A C K I3 I2 I1 I0 0 P0 R1 R0 A C K I N C 1 I N C 2 I N C n D E C 1 D E C n S T O P
ID3 ID2 ID1 ID0 Device ID
Instruction Opcode
Pot/WCR Data Address Register Address
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CAT5221
Figure 10. Increment/Decrement Timing Limits
INC/DEC Command Issued SCL
tWRID
SDA
RW
Voltage Out
INSTRUCTION FORMAT
Read Wiper Control Register (WCR) S T A R T DEVICE ADDRESSES 0 1 0 1 A3 A2 A1 A0 A C K INSTRUCTION 1 0 0 1 0 P0 0 0 A C K DATA 76 5 43 210 A C K S T O P
Write Wiper Control Register (WCR) S T A R T DEVICE ADDRESSES 0 1 0 1 A3 A2 A1 A0 A C K INSTRUCTION 1 0 1 0 0 P0 0 0 A C K DATA 76 5 43 A C 210 K S T O P
Read Data Register (DR) S T A R T DEVICE ADDRESSES 0 1 0 1 A3 A2 A1 A0 A C K A C 1 0 1 1 0 P0 R1 R0 76 K INSTRUCTION DATA 5 43 A C 210 K S T O P
Write Data Register (DR) S T A R T DEVICE ADDRESSES 0 1 0 1 A3 A2 A1 A0 A C K A C 1 1 0 0 0 P0 R1 R0 76 K INSTRUCTION DATA 5 43 A C 210 K S T O P
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Document No. 2113, Rev. I
CAT5221
INSTRUCTION FORMAT (continued)
Global Transfer Data Register (DR) to Wiper Control Register (WCR) S T A R T A C 0 1 0 1 A3 A2 A1 A0 K DEVICE ADDRESS A C 0 0 0 1 0 0 R1 R0 K INSTRUCTION S T O P
Global Transfer Wiper Control Register (WCR) to Data Register (DR) S T A R T A C 0 1 0 1 A3 A2 A1 A0 K DEVICE ADDRESS INSTRUCTION 1 0 0 0 0 0 R1 R0 A C K S T O P
Transfer Wiper Control Register (WCR) to Data Register (DR) S T A R T A C 0 1 0 1 A3 A2 A1 A0 K DEVICE ADDRESS A C 1 1 1 0 0 P0 R1R0 K INSTRUCTION S T O P
Transfer Data Register (DR) to Wiper Control Register (WCR) S T A R T A C 0 1 0 1 A3 A2 A1 A0 K DEVICE ADDRESS A C 1 1 0 1 0 P0 R1R0 K INSTRUCTION S T O P
Increment (I)/Decrement (D) Wiper Control Register (WCR) S T A R T A INSTRUCTION C 0 1 0 1 A3 A2 A1 A0 0 0 1 0 0 P0 0 0 K DEVICE ADDRESS A C K DATA I/D I/D *** A C I/D I/D K S T O P
Notes: (1) Any write or transfer to the Non-volatile Data Registers is followed by a high voltage cycle after a STOP has been issued.
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CAT5221
ORDERING INFORMATION
5221
Package J: SOIC U: TSSOP W: SOIC (Lead free, Halogen free) Y: TSSOP (Lead free, Halogen free)
Notes: (1) The device used in the above example is a CAT5221JI-10-TE13 (SOIC, Industrial Temperature, 10kohm, Tape & Reel)
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Document No. 2113, Rev. I
CAT5221
PACKAGING INFORMATION 20-LEAD 300 MIL WIDE SOIC (J, W)
0.2914 (7.40) 0.2992 (7.60)
0.394 (10.00) 0.419 (10.65)
0.5985 (15.20) 0.6141 (15.60) 0.0926 (2.35) 0.1043 (2.65) 0.050 (1.27) BSC 0.013 (0.33) 0.020 (0.51)
0.0040 (0.10) 0.0118 (0.30)
0.010 (0.25) X 45 0.029 (0.75) 0.0091 (0.23) 0.0125 (0.32) 0 --8 0.016 (0.40) 0.050 (1.27)
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CAT5221
20-LEAD TSSOP (U, Y)
DETAIL A
E1
1.0
1.0
E
A D
A
A2
b 2 e 0.20 R1 R
0.076MM SEATING PLANE
A1
A
SYMBOL A 1 A1 A2 L D E E1 R R1
DIMENSION IN MM MIN 0.05 0.80 0.50 6.40 6.30 4.30 0.09 0.09 0.19 0.19 0.09 0.09 1.0 REF 0.65 BSC 0 12 REF 12 REF 8 0.22 0.30 0.25 0.20 0.16 0.90 0.60 6.50 6.40 4.40 NOM MAX 1.20 0.15 1.05 0.75 6.60 6.50 4.50
DIMENSION IN INCH MIN .002 .031 .020 .252 .248 .169 .004 .004 .007 .007 .004 .004 .039 REF .026 BSC 0 12 REF 12 REF 20 8 .009 .012 .010 .008 .006 .035 .024 .256 .252 .173 NOM MAX .043 .006 .041 .030 .260 .256 .177
GAUGE PLANE L
3 DETAIL A L1
b
b b1 c c1 L1 e 1 2 3 N REF
b1
SECTION A-A
c1
c
JEDEC M0-153 VARIATION AC
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Document No. 2113, Rev. I
REVISION HISTORY
Date 9/30/2003 10/1/2003 3/10/2004 3/25/2004 04/01/04 Rev. E F G H I Reason Deleted WP from Functional Diagram, pg. 1 Changed designation to Advance Added TSSOP package in all areas Updated TSSOP package drawing Eliminated data sheet designation Update Features Update Description Update Pin Description Update device Operation Update Absolute Maximum Ratings Update Recommended Operating Conditions Update Potentiometer Characteristics Update Instructions Update Ordering Information
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CATALYST SEMICONDUCTOR MAKES NO WARRANTY, REPRESENTATION OR GUARANTEE, EXPRESS OR IMPLIED, REGARDING THE SUITABILITY OF ITS PRODUCTS FOR ANY PARTICULAR PURPOSE, NOR THAT THE USE OF ITS PRODUCTS WILL NOT INFRINGE ITS INTELLECTUAL PROPERTY RIGHTS OR THE RIGHTS OF THIRD PARTIES WITH RESPECT TO ANY PARTICULAR USE OR APPLICATION AND SPECIFICALLY DISCLAIMS ANY AND ALL LIABILITY ARISING OUT OF ANY SUCH USE OR APPLICATION, INCLUDING BUT NOT LIMITED TO, CONSEQUENTIAL OR INCIDENTAL DAMAGES.
Catalyst Semiconductor products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the Catalyst Semiconductor product could create a situation where personal injury or death may occur. Catalyst Semiconductor reserves the right to make changes to or discontinue any product or service described herein without notice. Products with data sheets labeled "Advance Information" or "Preliminary" and other products described herein may not be in production or offered for sale. Catalyst Semiconductor advises customers to obtain the current version of the relevant product information before placing orders. Circuit diagrams illustrate typical semiconductor applications and may not be complete.
Catalyst Semiconductor, Inc. Corporate Headquarters 1250 Borregas Avenue Sunnyvale, CA 94089 Phone: 408.542.1000 Fax: 408.542.1200 www.catalyst-semiconductor.com
Publication #: Revison: Issue date:
2113 I 4/01/04

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