MCP414X/416X/424X/426X 7/8-Bit Single/Dual SPI Digital POT with Non-Volatile Memory Features Description Single or Dual Resistor Network options The MCP41XX and MCP42XX devices offer a wide Potentiometer or Rheostat configuration options range of product offerings using an SPI interface. Resistor Network Resolution WiperLock Technology allows application-specific - 7-bit: 128 Resistors (129 Steps) calibration settings to be secured in the EEPROM. - 8-bit: 256 Resistors (257 Steps) R Resistances options of: AB Package Types (top view) -5k -10k MCP41X1 MCP41X2 -50k Single Potentiometer Single Rheostat - 100 k CS CS 1 8 V 1 8 V DD DD Zero-Scale to Full-Scale Wiper operation SCK SCK 2 7 P0B 2 7 SDO Low Wiper Resistance: 75 (typical) SDI/SDO P0W SDI 3 6 3 6 P0B Low Tempco: V 4 5 P0A V 4 5 P0W SS SS - Absolute (Rheostat): 50 ppm typical PDIP, SOIC, MSOP PDIP, SOIC, MSOP (0C to 70C) - Ratiometric (Potentiometer): 15 ppm typical CS CS V 1 8 V 1 8 DD DD Non-volatile Memory SCK 2 7 P0B SCK 2 7 SDO - Automatic Recall of Saved Wiper Setting EP EP 9 9 - WiperLock Technology SDI/SDO 3 6 P0W SDI 3 6 P0B SPI serial interface (10 MHz, modes 0,0 & 1,1) V 4 5 P0A V 4 5 P0W SS SS - High-Speed Read/Writes to wiper registers 3x3 DFN* 3x3 DFN* - Read/Write to Data EEPROM registers - Serially enabled EEPROM write protect - SDI/SDO multiplexing (MCP41X1 only) MCP42X1 Dual Potentiometers Resistor Network Terminal Disconnect Feature via: - Shutdown pin (SHDN) 16 15 14 13 V CS 1 14 DD - Terminal Control (TCON) Register SCK WP SDO 1 12 SCK 13 2 Write Protect Feature: SDI 12 SHDN 3 SDI NC 2 11 EP - Hardware Write Protect (WP) Control pin V 4 11 WP SS 17 P0B P0B V 3 10 P1B - Software Write Protect (WP) Configuration bit 5 10 SS P0W P1W 9 6 P0W Brown-out reset protection (1.5V typical) V 4 9 SS P0A P1A 8 7 Serial Interface Inactive current (2.5 uA typical) 56 7 8 PDIP, SOIC, TSSOP High-Voltage Tolerant Digital Inputs: Up to 12.5V Supports Split Rail Applications Internal weak pull-up on all digital inputs 4x4 QFN* Wide Operating Voltage: - 2.7V to 5.5V - Device Characteristics MCP42X2 Dual Rheostat Specified CS 1 10 V DD CS 1 10 V DD - 1.8V to 5.5V - Device Operation SDO SCK 2 9 SCK 2 9 SDO Wide Bandwidth (-3dB) Operation: P0B EP SDI 3 8 SDI 3 8 P0B - 2 MHz (typical) for 5.0 k device V P0W 11 4 7 SS 6 P1W V P0W Extended temperature range (-40C to +125C) P1B 5 4 7 SS 6 P1W P1B 5 MSOP, DFN 3x3 DFN* * Includes Exposed Thermal Pad (EP) see Table 3-1. 2008 Microchip Technology Inc. DS22059B-page 1 P1B CS P1W V DD P1A SDO SHDN P0AMCP414X/416X/424X/426X Device Block Diagram V Power-up/ P0A DD Resistor Brown-out Network 0 V SS Control (Pot 0) P0W Wiper 0 CS SPI Serial & TCON Interface SCK Register Module & P0B SDI Control SDO Logic (WiperLock P1A Resistor Technology) WP Network 1 SHDN (Pot 1) P1W For Dual Potentiometer Wiper 1 Devices Only Memory (16x9) & TCON Register Wiper0 (V & NV) P1B Wiper1 (V & NV) TCON For Dual Resistor Network STATUS Devices Only Data EEPROM (10 x 9-bits) Device Features Resistance (typical) V DD Wiper Wiper Device Operating Configuration (2) R Options (k) - R AB W Range () (3) (1) MCP4131 1 Potentiometer SPI RAM No Mid-Scale 5.0, 10.0, 50.0, 100.0 75 129 1.8V to 5.5V (3) MCP4132 1 Rheostat SPI RAM No Mid-Scale 5.0, 10.0, 50.0, 100.0 75 129 1.8V to 5.5V (1) MCP4141 1 Potentiometer SPI EE Yes NV Wiper 5.0, 10.0, 50.0, 100.0 75 129 2.7V to 5.5V MCP4142 1 Rheostat SPI EE Yes NV Wiper 5.0, 10.0, 50.0, 100.0 75 129 2.7V to 5.5V (3) (1) MCP4151 1 Potentiometer SPI RAM No Mid-Scale 5.0, 10.0, 50.0, 100.0 75 257 1.8V to 5.5V (3) MCP4152 1 Rheostat SPI RAM No Mid-Scale 5.0, 10.0, 50.0, 100.0 75 257 1.8V to 5.5V (1) MCP4161 1 Potentiometer SPI EE Yes NV Wiper 5.0, 10.0, 50.0, 100.0 75 257 2.7V to 5.5V MCP4162 1 Rheostat SPI EE Yes NV Wiper 5.0, 10.0, 50.0, 100.0 75 257 2.7V to 5.5V (3) (1) MCP4231 2 Potentiometer SPI RAM No Mid-Scale 5.0, 10.0, 50.0, 100.0 75 129 1.8V to 5.5V (3) MCP4232 2 Rheostat SPI RAM No Mid-Scale 5.0, 10.0, 50.0, 100.0 75 129 1.8V to 5.5V (1) MCP4241 2 Potentiometer SPI EE Yes NV Wiper 5.0, 10.0, 50.0, 100.0 75 129 2.7V to 5.5V MCP4242 2 Rheostat SPI EE Yes NV Wiper 5.0, 10.0, 50.0, 100.0 75 129 2.7V to 5.5V (3) (1) MCP4251 2 Potentiometer SPI RAM No Mid-Scale 5.0, 10.0, 50.0, 100.0 75 257 1.8V to 5.5V (3) MCP4252 2 Rheostat SPI RAM No Mid-Scale 5.0, 10.0, 50.0, 100.0 75 257 1.8V to 5.5V (1) MCP4261 2 Potentiometer SPI EE Yes NV Wiper 5.0, 10.0, 50.0, 100.0 75 257 2.7V to 5.5V MCP4262 2 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 DS22059B-page 2 2008 Microchip Technology Inc. of POTs Control Interface Memory Type WiperLock Technology POR Wiper Setting of Steps