MCP443X/5X 7/8-Bit Volatile Quad Digital POT 2 with I C Interface Package Types (Top View) Features Quad Resistor Network Potentiometer or Rheostat Configuration Options MCP44X1 Quad Potentiometers Resistor Network Resolution: P2A P3A 20 1 7-bit 128 Resistors (129 Taps) P3W 19 P2W 2 8-bit 256 Resistors (257 Taps) P2B P3B 18 3 V 17 Four R Resistances options: HVC/A0 4 DD AB A1 SCL 5 16 5k SDA 6 15 RESET 10 k V NC 7 14 SS P0B P1B 8 12 50 k P0W P1W 9 12 100 k P0A P1A 10 11 Zero-scale to Full-scale Wiper Operation TSSOP Low Wiper Resistance 75 typical Low Tempco: Absolute (Rheostat) 50 ppm typical (0-70C) Ratiometric (Potentiometer) 15 ppm typical 2 I C Serial Interface Support: 100 kHz 17 16 20 19 18 15 V DD 400 kHz P3B 1 14 A1 3.4 MHz HVC/A0 2 RESET 13 EP Serial Protocol Allows High-Speed Read/Write to SCL 3 21 Wiper 12 NC SDA 4 Resistor Network Terminal Disconnect Feature 11 P0B V 5 SS via Terminal Control (TCON) Register Reset Input Pin 6 7 89 10 Brown-out Reset Protection 1.5V typical Serial Interface Inactive Current 2.5 uA typical High-Voltage Tolerant Digital Inputs Up to 12.5V 4x4 QFN Supports Split Rail Applications Internal Weak Pull-up on All Digital Inputs, except SCL and SDA Wide Operating Voltage: MCP44X2 Quad Rheostat 2.7V to 5.5V - Device Characteristics Specified 1.8V to 5.5V - Device Operation P3W P2W 1 14 P3B 13 P2B 2 Wide Bandwidth (-3 dB) Operation 12 V 3 HVC/A0 DD 2 MHz typical for 5.0 k Device 11 4 A1 SCL Extended Temperature Range (-40C to +125C) SDA 5 10 P0B V 6 9 P0W Three Package Types: SS 7 8 P1W P1B 4x4 QFN-20 TSSOP TSSOP-20 TSSOP-14 2010 Microchip Technology Inc. DS22267A-page 1 P1B P3W P3A P1W P1A P2A P0A P2W P0W P2BMCP443X/5X Device Block Diagram V Power-up/ P0A DD Resistor Brown-out Network 0 V SS Control (Pot 0) P0W 2 Wiper 0 I C Serial A1 & TCON0 Interface HVC/A0 Register Module & P0B SCL Control Logic SDA P1A Resistor Network 1 RESET (Pot 1) P1W Wiper 1 Memory (16x9) & TCON0 Wiper0 (Vol) Register P1B Wiper1 (Vol) Wiper2 (Vol) Wiper3 (Vol) P2A Resistor TCON0 Network 2 TCON1 (Pot 2) P2W Wiper 2 & TCON1 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 AB W Range () (1) 2 MCP4431 4 Potentiometer I C RAM No Mid-Scale 5.0, 10.0, 50.0, 100.0 75 129 1.8V to 5.5V 2 MCP4432 4 Rheostat I C RAM No Mid-Scale 5.0, 10.0, 50.0, 100.0 75 129 1.8V to 5.5V (1) 2 MCP4441 4 Potentiometer I C EE Yes NV Wiper 5.0, 10.0, 50.0, 100.0 75 129 2.7V to 5.5V 2 MCP4442 4 Rheostat I C EE Yes NV Wiper 5.0, 10.0, 50.0, 100.0 75 129 2.7V to 5.5V (1) 2 MCP4451 4 Potentiometer I C RAM No Mid-Scale 5.0, 10.0, 50.0, 100.0 75 257 1.8V to 5.5V 2 MCP4452 4 Rheostat I C RAM No Mid-Scale 5.0, 10.0, 50.0, 100.0 75 257 1.8V to 5.5V (1) 2 MCP4461 4 Potentiometer I C EE Yes NV Wiper 5.0, 10.0, 50.0, 100.0 75 257 2.7V to 5.5V 2 MCP4462 4 Rheostat I C 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. DS22267A-page 2 2010 Microchip Technology Inc. of POTs Control Memory Type WiperLock Technology POR Wiper Setting of Taps