CAT5419 Dual Digitally Programmable Potentiometers (DPP™) with 64 Taps and 2-wire Interface FEATURES DESCRIPTION Two linear-taper digital potentiometers The CAT5419 is two Digitally Programmable Potentiometers (DPP™) integrated with control logic and 16 bytes of NVRAM memory. 64 resistor taps per potentiometer End to end resistance 2.5kΩ, 10kΩ, 50kΩ or 100kΩ A separate 6-bit control register (WCR) independently controls the wiper tap position for each DPP. Associated with each wiper control register are four 6bit 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 power-up, the contents of the first data register (DR0) for each of the two potentiometers is automatically loaded into its respective wiper control registers (WCR). Potentiometer control and memory access via 2-wire Interface (I2C like) Low wiper resistance, typically 80 Four non-volatile wiper settings for each potentiometer Recall of wiper settings at power up 2.5 to 6.0 volt operation Standby current less than 1µA 1,000,000 nonvolatile WRITE cycles ¯¯¯) pin protects against The Write Protection (WP inadvertent programming of the data register. 100 year nonvolatile memory data retention 24-lead SOIC and 24-lead TSSOP The CAT5419 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. Write protection for data register PIN CONFIGURATION For Ordering Information details, see page 15. TSSOP (Y) (top view) SOIC (W) (top view) VCC 1 24 NC SDA 1 24 ¯¯¯ WP RL0 2 23 NC A1 2 23 A2 RH0 3 22 NC RL1 3 22 RW0 RW0 4 21 NC RH1 4 21 RH0 A2 5 20 A0 RW1 5 20 RL0 ¯¯¯ WP 6 NC GND 6 7 A3 NC 7 CAT 19 5419 18 VCC SDA CAT 19 5419 18 RH0 SCL SDA NC A1 8 17 SCL NC 8 17 NC RL1 9 16 NC NC 9 16 NC RH1 10 15 NC NC 10 15 NC RW1 11 14 NC SCL 11 14 A0 GND 12 13 NC A3 12 13 NC 2008 SCILLC. All rights reserved. Characteristics subject to change without notice FUNCTIONAL DIAGRAM 2-WIRE BUS INTERFACE RH1 WIPER CONTROL REGISTERS RW0 RW1 WP A0 A1 A2 A3 CONTROL LOGIC NONVOLATILE DATA REGISTERS RL0 1 RL1 Doc. No. MD-2115 Rev. I CAT5419 PIN DESCRIPTIONS SCL: Serial Clock The CAT5419 serial clock input pin is used to clock all data transfers into or out of the device. SDA: Serial Data The CAT5419 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 CAT5419. Pin SOIC Pin TSSOP Name 1 19 VCC 2 20 RL0 3 21 RH0 4 22 RW0 Function Supply Voltage Low Reference Terminal for Potentiometer 0 High Reference Terminal for Potentiometer 0 Wiper Terminal for Potentiometer 0 5 23 A2 Device Address 6 24 ¯¯¯ WP Write Protection 7 1 SDA Serial Data Input/Output 8 2 A1 Device Address Low Reference Terminal for Potentiometer 1 High Reference Terminal for Potentiometer 1 9 3 RL1 RH, RL: Resistor End Points The RH and RL pins are equivalent to the terminal connections on a mechanical potentiometer. 10 4 RH1 11 5 RW1 Wiper Terminal for Potentiometer 1 RW: Wiper The RW pins are equivalent to the wiper terminal of a mechanical potentiometer. 12 6 GND Ground 13 7 NC No Connect 14 8 NC No Connect 15 9 NC No Connect 16 10 NC No Connect 17 11 SCL Bus Serial Clock 18 12 A3 Device Address 19 13 NC No Connect 20 14 A0 Device Address, LSB 21 15 NC No Connect 22 16 NC No Connect 23 17 NC No Connect 24 18 NC No Connect ¯¯¯ WP: Write Protect Input The ¯¯¯ WP pin when tied low prevents non-volatile writes to the data registers (change of wiper control register is allowed) and when tied high or left floating normal read/write operations are allowed. See page 7, Write Protection for more details. DEVICE OPERATION The CAT5419 is two resistor arrays integrated with 2wire serial interface logic, four 6-bit wiper control registers and sixteen 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. Doc. No. MD-2115 Rev. I 2 2008 SCILLC. All rights reserved. Characteristics subject to change without notice CAT5419 ABSOLUTE MAXIMUM RATINGS(1) Parameters Temperature Under Bias Storage Temperature Range Voltage to any Pins with Respect to VSS (2) (3) VCC with Respect to GND Package Power Dissipation Capability (TA = 25°C) Lead Soldering Temperature (10 secs) Wiper Current Ratings -55 to +125 -65 to +150 -2.0 to VCC +2.0 -2.0 to +7.0 1.0 300 ±12 Units ºC ºC V V W ºC mA RECOMMENDED OPERATING CONDITIONS Parameters VCC Industrial Temperature Ratings +2.5 to 6.0 -40 to +85 Units V ºC POTENTIOMETER CHARACTERISTICS Over recommended operating conditions unless otherwise stated. Symbol Parameter Test Conditions Min Typ Max Units RPOT Potentiometer Resistance (-00) 100 kΩ RPOT Potentiometer Resistance (-50) 50 kΩ RPOT Potentiometer Resistance (-10) 10 kΩ RPOT Potentiometer Resistance (-2.5) 2.5 kΩ Potentiometer Resistance Tolerance RPOT Matching Power Rating 25°C, each pot IW Wiper Current RW Wiper Resistance IW = ±3mA @ VCC = 3V RW Wiper Resistance IW = ±3mA @ VCC = 5V Voltage on any RH or RL Pin VSS (4) VTERM VN Noise = 0V GND Resolution Absolute Linearity TCRPOT TCRATIO CH/CL/CW fc (5) RW(n)(actual)-R(n)(expected) Relative Linearity (6) RW(n+1)-[RW(n)+LSB](8) Temperature Coefficient of RPOT (4) Ratiometric Temp. Coefficient (4) Potentiometer Capacitances (4) Frequency Response 80 ±20 % 1 % 50 mW ±6 mA 300 Ω 150 Ω VCC V TBD nV/√Hz 1.6 % (8) ±1 LSB (7) ±0.2 LSB (7) ±300 ppm/°C 20 (4) RPOT = 50kΩ ppm/°C 10/10/25 pF 0.4 MHz Notes: (1) 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. (2) 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. (3) Latch-up protection is provided for stresses up to 100 mA on address and data pins from –1V to VCC +1V. (4) This parameter is tested initially and after a design or process change that affects the parameter. (5) Absolute linearity is utilitzed to determine actual wiper voltage versus expected voltage as determined by wiper position when used as a potentiometer. (6) 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. (7) LSB = RTOT / 63 or (RH - RL) / 63, single pot (8) n = 0, 1, 2, ..., 63 2008 SCILLC. All rights reserved. Characteristics subject to change without notice 3 Doc. No. MD-2115 Rev. I CAT5419 D.C. OPERATING CHARACTERISTICS Over recommended operating conditions unless otherwise stated. Symbol Parameter Test Conditions ICC Power Supply Current ISB Min Max Units fSCL = 400kHz 1 mA Standby Current (VCC = 5.0V) VIN = GND or VCC; SDA Open 1 µA ILI Input Leakage Current VIN = GND to VCC 10 µA ILO Output Leakage Current VOUT = GND to VCC 10 µA VIL Input Low Voltage -1 VCC x 0.3 V VIH Input High Voltage VCC x 0.7 VCC + 1.0 V VOL1 Output Low Voltage (VCC = 3.0V) 0.4 V IOL = 3 mA PIN CAPACITANCE (1) Applicable over recommended operating range from TA = 25˚C, f = 1.0 MHz, VCC = +5.0V (unless otherwise noted). Symbol Test Conditions Min Typ Max Units Conditions CI/O Output Capacitance (SDA) 8 pF VI/O = 0V CIN Input Capacitance (A0, A1, A2, A3, SCL, ¯¯¯ WP) 6 pF VIN = 0V Min Typ A.C. CHARACTERISTICS Over recommended operating conditions unless otherwise stated. Symbol fSCL (1) TI tAA tBUF (1) Parameter Max Units Clock Frequency 400 kHz Noise Suppression Time Constant at SCL, SDA Inputs 50 ns SLC Low to SDA Data Out and ACK Out 0.9 µs Time the bus must be free before a new transmission can start 1.2 µs Start Condition Hold Time 0.6 µs tLOW Clock Low Period 1.2 µs tHIGH tHD:STA Clock High Period 0.6 µs tSU:STA Start Condition Setup Time (for a Repeated Start Condition) 0.6 µs tHD:DAT Data in Hold Time 0 ns tSU:DAT Data in Setup Time 100 ns (1) SDA and SCL Rise Time 0.3 µs (1) SDA and SCL Fall Time 300 ns tR tF tSU:STO tDH Stop Condition Setup Time 0.6 µs Data Out Hold Time 50 ns POWER UP TIMING (1) Over recommended operating conditions unless otherwise stated. Symbol Parameter Min Typ Max Units tPUR Power-up to Read Operation 1 ms tPUW Power-up to Write Operation 1 ms Note: (1) This parameter is tested initially and after a design or process change that affects the parameter. Doc. No. MD-2115 Rev. I 4 2008 SCILLC. All rights reserved. Characteristics subject to change without notice CAT5419 WRITE CYCLES LIMITS Symbol Parameter tWR Write Cycle Time Max Units 5 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) VZAP(1) ILTH(1)(2) Parameter Reference Test Method Min Typ Max Units Endurance MIL-STD-883, Test Method 1033 1,000,000 Cycles/Byte Data Retention MIL-STD-883, Test Method 1008 100 Years ESD Susceptibility MIL-STD-883, Test Method 3015 2000 Volts Latch-Up JEDEC Standard 17 100 mA 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 tHIGH tLOW tR tLOW SCL tSU:STA tHD:DAT tHD:STA tSU:DAT tSU:STO SDA IN tAA tBUF tDH SDA OUT Figure 2. Write Cycle Timing SCL 8TH BIT BYTE n SDA ACK tWR STOP CONDITION START CONDITION ADDRESS Figure 3. Start/Stop Timing SDA SCL START BIT 2008 SCILLC. All rights reserved. Characteristics subject to change without notice STOP BIT 5 Doc. No. MD-2115 Rev. I CAT5419 of the particular slave device it is requesting. The four most significant bits of the 8-bit slave address are fixed as 0101 for the CAT5419 (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. 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. After the Master sends a START condition and the slave address byte, the CAT5419 monitors the bus and responds with an acknowledge (on the SDA line) when its address matches the transmitted slave address. 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 CAT5419 will be considered a slave device in all applications. 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. 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 CAT5419 monitors the SDA and SCL lines and will not respond until this condition is met. The CAT5419 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. 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. When the CAT5419 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 CAT5419 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 Figure 4. Acknowledge Timing SCL FROM MASTER 1 8 9 DATA OUTPUT FROM TRANSMITTER DATA OUTPUT FROM RECEIVER ACKNOWLEDGE START Doc. No. MD-2115 Rev. I 6 2008 SCILLC. All rights reserved. Characteristics subject to change without notice CAT5419 internal write cycle. ACK polling can be initiated immediately. This involves issuing the start condition followed by the slave address. If the CAT5419 is still busy with the write operation, no ACK will be returned. If the CAT5419 has completed the write operation, an ACK will be returned and the host can then proceed with the next instruction operation. 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 CAT5419. 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 CAT5419 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. WRITE PROTECTION The Write Protection feature allows the user to protect against inadvertent programming of the non-volatile data registers. If the ¯¯¯ WP pin is tied to LOW, the data registers are protected and become read only. Similarly, ¯¯¯ WP pin going LOW after Start will interrupt non-volatile write to data registers, while ¯¯¯ WP pin going LOW after internal write cycle has started will have no effect on any write operation. The CAT5419 will accept both slave addresses and instructions, but the data registers are protected from programming by the device’s failure to send an acknowledge after data is received. 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 CAT5419 initiates the Figure 5. Slave Address Bits CAT5419 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 INSTRUCTION BYTE SLAVE/DPP ADDRESS Fixed Variable op code DR1 WCR DATA S P A C K 2008 SCILLC. All rights reserved. Characteristics subject to change without notice Data Register Pot/WCR Address Address S T O P A C K 7 A C K Doc. No. MD-2115 Rev. I CAT5419 Instruction Byte The next byte sent to the CAT5419 contains the instruction and register pointer information. The four most significant bits used provide the instruction opcode I [3:0]. The R1 and R0 bits point to one of the four data registers of each associated potentiometer. The least two significant bits point to one of two Wiper Control Registers. The format is shown in Table 2. INSTRUCTIONS AND REGISTER DESCRIPTION INSTRUCTIONS Slave Address Byte The first byte sent to the CAT5419 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 CAT5419 are fixed at 0101[B] (refer to Table 1). Data Register Selection Data Register Selected R1 R0 DR0 0 0 DR1 0 1 DR2 1 0 DR3 1 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 CAT5419 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 ID3 0 ID2 1 ID1 0 Slave Address ID0 1 A3 A2 A1 (MSB) A0 (LSB) Table 2. Instruction Byte Format Instruction Opcode I3 (MSB) Doc. No. MD-2115 Rev. I I2 Data Register Selection I1 I0 R1 8 R0 WCR/Pot Selection 0 P0 (LSB) 2008 SCILLC. All rights reserved. Characteristics subject to change without notice CAT5419 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. WIPER CONTROL AND DATA REGISTERS Wiper Control Register (WCR) The CAT5419 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. 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 The Wiper Control Register is a volatile register that loses its contents when the CAT5419 is powereddown. 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. — 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 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 — Write Data Register – write a new value to the selected Data Register. Table 3. Instruction Set Note: 1/0 = data is one or zero Instruction Set Instruction I3 I2 I1 I0 R1 R0 0 WCR0/ P0 Operation Read Wiper Control Register 1 0 0 1 0 0 0 1/0 Read the contents of the Wiper Control Register pointed to by P0 Write Wiper Control Register 1 0 1 0 0 0 0 1/0 Write new value to the Wiper Control Register pointed to by P0 Read Data Register 1 0 1 1 1/0 1/0 0 1/0 Read the contents of the Data Register pointed to by P0 and R1-R0 Write Data Register 1 1 0 0 1/0 1/0 0 1/0 Write new value to the Data Register pointed to by P0 and R1-R0 XFR Data Register to Wiper Control Register 1 1 0 1 1/0 1/0 0 1/0 Transfer the contents of the Data Register pointed to by P0 and R1-R0 to its associated Wiper Control Register XFR Wiper Control Register to Data Register 1 1 1 0 1/0 1/0 0 1/0 Transfer the contents of the Wiper Control Register pointed to by P0 to the Data Register pointed to by R1-R0 Gang XFR Data Registers to Wiper Control Registers 0 0 0 1 1/0 1/0 0 0 Transfer the contents of the Data Registers pointed to by R1-R0 of both pots to their respective Wiper Control Registers Gang XFR Wiper Control Registers to Data Register 1 0 0 0 1/0 1/0 0 0 Transfer the contents of both Wiper Control Registers to their respective data Registers pointed to by R1-R0 of both four pots Increment/Decrement Wiper Control Register 0 0 1 0 0 0 0 1/0 2008 SCILLC. All rights reserved. Characteristics subject to change without notice 9 Enable Increment/decrement of the Control Latch pointed to by P0 Doc. No. MD-2115 Rev. I CAT5419 The basic sequence of the three byte instructions is illustrated in Figure 8. These three-byte instructions 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 nonvolatile memory and takes a maximum of tWR to complete. The transfer can occur between one of the potentiometers and one of its associated registers; or the transfer can occur between all potentiometers and one associated 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 CAT5419 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. Four instructions require a two-byte sequence to complete, as illustrated in Figure 7. These instructions transfer data between the host/processor and the CAT5419; 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. See Instructions format for more detail. Figure 7. Two-Byte Instruction Sequence SDA 0 1 0 1 S ID3 ID2 ID1 ID0 A3 T A R Device ID T A2 A1 A0 A I3 C K Internal Address I2 I1 I0 Instruction Opcode 0 R1 R0 Register Address S T O P P0 A C K Pot/WCR Address Figure 8. Three-Byte Instruction Sequence SDA 0 1 0 1 S ID3 ID2 ID1 ID0 A3 T A Device ID R T A2 A0 A I3 C K Internal Address I2 A1 I1 I0 Instruction Opcode P0 A C K Data Pot/WCR Register Address Address R1 R0 0 D7 D6 D5 D4 D3 D2 D1 D0 WCR[7:0] or Data Register D[7:0] A C K S T O P Figure 9. Increment/Decrement Instruction Sequence 0 SDA S T A R T 1 0 1 ID3 ID2 ID1 ID0 Doc. No. MD-2115 Rev. I Device ID A3 A2 A1 A0 Internal Address A C K I3 I2 I1 Instruction Opcode 10 I0 R1 R0 0 P0 A C Pot/WCR K Data Register Address Address I N C 1 I N C 2 I N C n D E C 1 D E C n S T O P 2008 SCILLC. All rights reserved. Characteristics subject to change without notice CAT5419 Figure 10. Increment/Decrement Timing Limits INC/DEC Command Issued tWRID SCL SDA Voltage Out RW 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 0 0 P0 A C K DATA 7 0 6 0 5 4 3 2 1 0 A C K S T O P A C K S T O P A C K S T O P 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 0 0 P0 A C K DATA 7 0 6 0 5 4 3 2 1 0 Read Data Register (DR) S T A R T DEVICE ADDRESSES 0 1 0 1 A3 A2 A1 A0 A C K INSTRUCTION 1 0 1 1 R1 R0 0 P0 A C K DATA 7 0 6 0 5 4 3 2 1 0 Write Data Register (DR) S T A R T DEVICE ADDRESSES 0 1 0 1 A3 A2 2008 SCILLC. All rights reserved. Characteristics subject to change without notice A1 A0 A C K INSTRUCTION 1 1 0 0 R1 11 R0 0 P0 A C K DATA 7 0 6 0 5 4 3 2 1 0 Doc. No. MD-2115 Rev. I CAT5419 INSTRUCTION FORMAT (continued) Global Transfer Data Register (DR) to Wiper Control Register (WCR) S T A R T DEVICE ADDRESSES 0 1 0 1 A3 A2 A1 A0 A C K INSTRUCTION 0 0 0 1 R1 R0 0 0 A C K S T O P A C K S T O P A C K S T O P A C K S T O P Global Transfer Wiper Control Register (WCR) to Data Register (DR) S T A R T DEVICE ADDRESSES 0 1 0 1 A3 A2 A1 A0 A C K INSTRUCTION 1 0 0 0 R1 R0 0 0 Transfer Wiper Control Register (WCR) to Data Register (DR) S T A R T DEVICE ADDRESSES 0 1 0 1 A3 A2 A1 A0 A C K INSTRUCTION 1 1 1 0 R1 R0 0 P0 Transfer Data Register (DR) to Wiper Control Register (WCR) S T A R T DEVICE ADDRESSES 0 1 0 1 A3 A2 A1 A0 A C K INSTRUCTION 1 1 0 1 R1 R0 0 P0 Increment (I)/Decrement (D) Wiper Control Register (WCR) S T A R T DEVICE ADDRESSES 0 1 0 1 A3 A2 A1 A0 A C K INSTRUCTION 0 0 1 0 0 0 0 P0 A C K DATA I/D I/D ... I/D I/D S T O P Note: (1) Any write or transfer to the Non-volatile Data Registers is followed by a high voltage cycle after a STOP has been issued. Doc. No. MD-2115 Rev. I 12 2008 SCILLC. All rights reserved. Characteristics subject to change without notice CAT5419 PACKAGE OUTLINE DRAWINGS SOIC 24-Lead 300mils (W) (1)(2) SYMBOL E1 E MIN e PIN#1 IDENTIFICATION MAX A 2.35 2.65 A1 0.10 0.30 A2 2.05 2.55 b 0.31 0.51 c 0.20 0.33 D 15.20 15.40 E 10.11 10.51 E1 7.34 e b NOM 7.60 1.27 BSC h 0.25 0.75 L 0.40 1.27 θ 0° 8° θ1 5° 15° TOP VIEW h D A2 A A1 SIDE VIEW h θ1 θ θ1 L c END VIEW For current Tape and Reel information, download the PDF file from: http://www.catsemi.com/documents/tapeandreel.pdf. Notes: (1) All dimensions in millimeters. Angles in degrees. (2) Complies with JEDEC MS-013. 2008 SCILLC. All rights reserved. Characteristics subject to change without notice 13 Doc. No. MD-2115 Rev. I CAT5419 TSSOP 24-Lead 4.4mm (Y) (1)(2) b SYMBOL MIN NOM A E1 E MAX 1.20 A1 0.05 0.15 A2 0.80 1.05 b 0.19 0.30 c 0.09 0.20 D 7.70 7.80 7.90 E 6.25 6.40 6.55 E1 4.30 4.40 4.50 e 0.65 BSC L 1.00 REF L1 0.50 θ1 0° 0.60 0.70 8° e TOP VIEW D c A2 A θ1 L1 A1 L SIDE VIEW END VIEW For current Tape and Reel information, download the PDF file from: http://www.catsemi.com/documents/tapeandreel.pdf. Notes: (1) All dimensions in millimeters. Angles in degrees. (2) Complies with JEDEC MO-153. Doc. No. MD-2115 Rev. I 14 2008 SCILLC. All rights reserved. Characteristics subject to change without notice CAT5419 EXAMPLE OF ORDERING INFORMATION Prefix Device # CAT 5419 Company ID (1) Suffix W Package W: SOIC Y: TSSOP I Temperature Range I = Industrial (-40ºC to 85ºC) -00 - T1 Resistance 25: 2.5kΩ 10: 10kΩ 50: 50kΩ 00: 100kΩ Tape & Reel T: Tape & Reel 1: 1000/Reel - SOIC 2: 2000/Reel - TSSOP Product Number 5419 ORDERING PART NUMBER CAT5419WI-25 CAT5419WI-10 CAT5419WI-50 CAT5419WI-00 CAT5419YI-25 CAT5419YI-10 CAT5419YI-50 CAT5419YI-00 Notes: (1) All packages are RoHS-compliant (Lead-free, Halogen-free). (2) The standard lead finish is Matte-Tin. (3) This device used in the above example is a CAT5419WI-00-T1 (SOIC, Industrial Temperature, 100kΩ, Tape & Reel). 2008 SCILLC. All rights reserved. Characteristics subject to change without notice 15 Doc. No. MD-2115 Rev. I CAT5419 REVISION HISTORY Date Rev. 08-Oct-03 E 01-Apr-04 F 29-Apr-07 10-Oct-07 G 01-Dec-08 I H Description Update Features Update Description Eliminate data sheet designation Update Features Update Description Update Pin Description Update Absolute Maximum Ratings Update Recommended Operating Conditions Update Potentiometer Characteristics Update Write Protection Update Instructions Update Ordering Information Updated Example of Ordering Information Deleted BGA package Updated Package Outline Drawings Updated Example of Ordering Information Added MD- to document number Change logo and fine print to ON Semiconductor ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. “Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer application by customer's technical experts. SCILLC does not convey any license under its patent rights nor the rights of others. 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This literature is subject to all applicable copyright laws and is not for resale in any manner. PUBLICATION ORDERING INFORMATION LITERATURE FULFILLMENT: Literature Distribution Center for ON Semiconductor P.O. Box 5163, Denver, Colorado 80217 USA Phone: 303-675-2175 or 800-344-3860 Toll Free USA/Canada Fax: 303-675-2176 or 800-344-3867 Toll Free USA/Canada Email: [email protected] Doc. No. MD-2115 Rev. I N. American Technical Support: 800-282-9855 Toll Free USA/Canada Europe, Middle East and Africa Technical Support: Phone: 421 33 790 2910 Japan Customer Focus Center: Phone: 81-3-5773-3850 16 ON Semiconductor Website: www.onsemi.com Order Literature: http://www.onsemi.com/orderlit For additional information, please contact your local Sales Representative © 2008 SCILLC. All rights reserved. Characteristics subject to change without notice