MCP434X/436X 7/8-Bit Quad SPI Digital POT with Non-Volatile Memory Package Types (Top View) Features Quad Resistor Network MCP43X1 Quad Potentiometers Potentiometer or Rheostat configuration options P2A P3A 1 20 Resistor Network Resolution P2W P3W 19 2 - 7-bit: 128 Resistors (129 Taps) P2B P3B 18 3 V - 8-bit: 256 Resistors (257 Taps) 4 17 CS DD SDO R Resistances options of: SCK 5 16 AB SDI 15 RESET 6 -5k V 14 WP 7 SS -10k P0B P1B 8 12 -50k P1W 12 P0W 9 P0A - 100 k P1A 10 11 Zero Scale to Full Scale Wiper operation TSSOP Low Wiper Resistance: 75 (typical) Low Tempco: - Absolute (Rheostat): 50 ppm typical (0C to 70C) 18 17 16 20 19 - Ratiometric (Potentiometer): 15 ppm typical 15 V DD P3B 1 Non-volatile Memory SDO 14 - Automatic Recall of Saved Wiper Setting CS 2 13 RESET - WiperLock Technology EP SCK 3 21 SPI serial interface (10 MHz, modes 0,0 & 1,1) WP 12 SDI 4 - High-Speed Read/Writes to wiper registers P0B 11 V 5 SS - Read/Write to Data EEPROM registers - Serially enabled EEPROM write protect 89 10 6 7 Resistor Network Terminal Disconnect Feature via Terminal Control (TCON) Register Reset input pin 4x4 QFN Write Protect Feature: - Hardware Write Protect (WP) Control pin MCP43X2 Quad Rheostat - Software Write Protect (WP) Configuration bit P2W P3W 1 14 Brown-out reset protection (1.5V typical) 13 P2B P3B 2 Serial Interface Inactive current (2.5 uA typical) V 3 12 CS DD 4 11 SDO High-Voltage Tolerant Digital Inputs: Up to 12.5V SCK SDI 10 5 P0B Supports Split Rail Applications V 6 9 P0W SS Internal weak pull-up on all digital inputs 7 8 P1W P1B Wide Operating Voltage: TSSOP - 2.7V to 5.5V - Device Characteristics Specified - 1.8V to 5.5V - Device Operation Wide Bandwidth (-3 dB) Operation: - 2 MHz (typical) for 5.0 k device Extended temperature range (-40C to +125C) 2009 Microchip Technology Inc. DS22233A-page 1 P1B P3W P1W P3A P1A P2A P0A P2W P0W P2BMCP434X/436X Device Block Diagram V Power-up/ P0A DD Resistor Brown-out Network 0 V SS Control (Pot 0) P0W Wiper 0 CS SPI Serial & TCON0 Interface SCK Register Module & P0B SDI Control SDO Logic (WiperLock P1A Resistor WP Technology) Network 1 RESET (Pot 1) P1W Wiper 1 Memory (16x9) & TCON0 Register Wiper0 (V & NV) P1B Wiper1 (V & NV) Wiper2 (V & NV) Wiper3 (V & NV) P2A Resistor TCON0 Network 2 TCON1 (Pot 2) STATUS P2W Wiper 2 Data EEPROM & TCON1 (5 x 9-bits) Register P2B P3A Resistor Network 3 (Pot 3) P3W Wiper 3 & TCON1 Register P3B Device Features Resistance (typical) V DD Wiper Wiper Device Operating Configuration (2) R Options (k) - R Range AB W () (3) (1) MCP4331 4 Potentiometer SPI RAM No Mid-Scale 5.0, 10.0, 50.0, 100.0 75 129 1.8V to 5.5V (3) MCP4332 4 Rheostat SPI RAM No Mid-Scale 5.0, 10.0, 50.0, 100.0 75 129 1.8V to 5.5V (1) MCP4341 4 Potentiometer SPI EE Yes NV Wiper 5.0, 10.0, 50.0, 100.0 75 129 2.7V to 5.5V MCP4342 4 Rheostat SPI EE Yes NV Wiper 5.0, 10.0, 50.0, 100.0 75 129 2.7V to 5.5V (3) (1) MCP4351 4 Potentiometer SPI RAM No Mid-Scale 5.0, 10.0, 50.0, 100.0 75 257 1.8V to 5.5V (3) MCP4352 4 Rheostat SPI RAM No Mid-Scale 5.0, 10.0, 50.0, 100.0 75 257 1.8V to 5.5V (1) MCP4361 4 Potentiometer SPI EE Yes NV Wiper 5.0, 10.0, 50.0, 100.0 75 257 2.7V to 5.5V MCP4362 4 Rheostat SPI EE Yes NV Wiper 5.0, 10.0, 50.0, 100.0 75 257 2.7V to 5.5V Note 1: Floating either terminal (A or B) allows the device to be used as a Rheostat (variable resistor). 2: Analog characteristics only tested from 2.7V to 5.5V unless otherwise noted. 3: Please check Microchip web site for device release and availability. DS22233A-page 2 2009 Microchip Technology Inc. of POTs Control Interface Memory Type WiperLock Technology POR Wiper Setting of Taps