MCP444X/446X 2 7/8-Bit Quad I C Digital POT with Nonvolatile Memory Package Types (Top View) Features Quad Resistor Network MCP44X1 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 3 18 - 8-bit: 256 Resistors (257 Taps) V 4 17 HVC/A0 DD A1 R Resistances options of: SCL 5 16 AB SDA 15 RESET 6 -5k V 14 WP 7 SS -10k P0B P1B 8 12 -50k P1W 12 P0W 9 -100k P0A 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 - Ratiometric (Potentiometer): 15 ppm typical 20 19 15 V DD P3B 1 Nonvolatile Memory 14 A1 - Automatic Recall of Saved Wiper Setting HVC/A0 2 13 RESET - WiperLock Technology EP SCL 3 21 - 5 General Purpose Memory Locations WP 12 SDA 4 2 I C Serial Interface P0B 11 V 5 - 100 kHz, 400 kHz, and 3.4 MHz support SS Serial protocol allows: 89 10 6 7 - High-Speed Read/Write to wiper - Read/Write to EEPROM - Write Protect to be enabled/disable 4x4 QFN - WiperLock to be enabled/disabled Resistor Network Terminal Disconnect Feature MCP44X2 Quad Rheostat via Terminal Control (TCON) Register Reset input pin P3W P2W 1 14 13 P2B P3B 2 Write Protect Feature: 12 V 3 HVC/A0 DD - Hardware Write Protect (WP) Control pin 11 4 A1 SCL - Software Write Protect (WP) Configuration bit SDA 5 10 P0B Brown-out reset protection (1.5V typical) V 6 9 P0W SS Serial Interface Inactive current (2.5 uA typical) 7 8 P1W P1B High-Voltage Tolerant Digital Inputs: Up to 12.5V TSSOP Supports Split Rail Applications Internal weak pull-up on all digital inputs (except SCL and SDA) Wide Operating Voltage: - 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) Package Types: 4x4 QFN-20, TSSOP-20 and TSSOP-14 2010 Microchip Technology Inc. DS22265A-page 1 P1B P3W P1W P3A P1A P2A P0A P2W P0W P2BMCP444X/446X 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 (WiperLock P1A Resistor Technology) WP Network 1 RESET (Pot 1) P1W Wiper 1 Memory (16x9) & TCON0 Wiper0 (V & NV) Register P1B Wiper1 (V & NV) Wiper2 (V & NV) Wiper3 (V & NV) P2A Resistor TCON0 Network 2 TCON1 (Pot 2) P2W STATUS 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 AB W Range () (3) (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 (3) 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 (3) (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 (3) 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. 3: Please check Microchip web site for device release and availability. DS22265A-page 2 2010 Microchip Technology Inc. of POTs Control Memory Type WiperLock Technology POR Wiper Setting of Taps