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MCP434X/436X
7/8-Bit Quad SPI Digital POT with Non-Volatile Memory
Features
• Quad Resistor Network • Potentiometer or Rheostat configuration options • Resistor Network Resolution - 7-bit: 128 Resistors (129 Taps) - 8-bit: 256 Resistors (257 Taps) • RAB Resistances options of: - 5 kΩ - 10 kΩ - 50 kΩ - 100 kΩ • Zero Scale to Full Scale Wiper operation • Low Wiper Resistance: 75 Ω (typical) • Low Tempco: - Absolute (Rheostat): 50 ppm typical (0°C to 70°C) - Ratiometric (Potentiometer): 15 ppm typical • Non-volatile Memory - Automatic Recall of Saved Wiper Setting - WiperLock™ Technology • SPI serial interface (10 MHz, modes 0,0 & 1,1) - High-Speed Read/Writes to wiper registers - Read/Write to Data EEPROM registers - Serially enabled EEPROM write protect • Resistor Network Terminal Disconnect Feature via Terminal Control (TCON) Register • Reset input pin • Write Protect Feature: - Hardware Write Protect (WP) Control pin - Software Write Protect (WP) Configuration bit • Brown-out reset protection (1.5V typical) • Serial Interface Inactive current (2.5 uA typical) • High-Voltage Tolerant Digital Inputs: Up to 12.5V • Supports Split Rail Applications • Internal weak pull-up on all digital inputs • 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 kΩ device • Extended temperature range (-40°C to +125°C)
Package Types (Top View)
MCP43X1 Quad Potentiometers
P3A P3W P3B CS SCK SDI VSS P1B P1W P1A
1 2 3 4 5 6 7 8 9 10
20 19 18 17 16 15 14 12 12 11
P2A P2W P2B VDD SDO RESET WP P0B P0W P0A
TSSOP
P3W P2W P2A P3A P2B 15 13 12 11 6 P1B 7 P1W 8 P1A 9 10 P0W P0A
20 19 18 17 16 P3B CS SCK SDI VSS 1 2 3 4 5 EP 21
VDD RESET WP P0B
14 SDO
4x4 QFN MCP43X2 Quad Rheostat
P3W P3B CS SCK SDI VSS P1B
1 2 3 4 5 6 7
14 13 12 11 10 9 8 TSSOP
P2W P2B VDD SDO P0B P0W P1W
© 2009 Microchip Technology Inc.
DS22233A-page 1
MCP434X/436X
www.DataSheet4U.com
Device Block Diagram
VDD VSS CS SCK SDI SDO WP RESET Power-up/ Brown-out Control SPI Serial Interface Module & Control Logic (WiperLock™ Technology) P0A
Resistor Network 0 (Pot 0) Wiper 0 & TCON0 Register
P0W
P0B P1A
Resistor Network 1 (Pot 1) Wiper 1 & TCON0 Register
P1W
Memory (16x9) Wiper0 (V & NV) Wiper1 (V & NV) Wiper2 (V & NV) Wiper3 (V & NV) TCON0 TCON1 STATUS Data EEPROM (5 x 9-bits)
P1B P2A
Resistor Network 2 (Pot 2) Wiper 2 & TCON1 Register
P2W
P2B P3A
Resistor Network 3 (Pot 3) Wiper 3 & TCON1 Register
P3W
P3B
Device Features
WiperLock Technology POR Wiper Setting # of POTs Control Interface # of Taps Memory Type Resistance (typical) RAB Options (kΩ) Wiper - RW (Ω) 75 75 75 75 75 75 75 75 Wiper Configuration VDD Operating Range (2)
Device
MCP4331 (3) MCP4332 (3) MCP4341 MCP4342 MCP4351 (3) MCP4352 (3) MCP4361 MCP4362 Note 1: 2: 3:
4 Potentiometer (1) SPI 4 4 4 4 4 4 4 Rheostat Potentiometer (1) Rheostat Potentiometer (1) Rheostat Potentiometer (1) Rheostat SPI SPI SPI SPI SPI SPI SPI
RAM RAM EE EE RAM RAM EE EE
No No Yes Yes No No Yes Yes
Mid-Scale 5.0, 10.0, 50.0, 100.0 Mid-Scale 5.0, 10.0, 50.0, 100.0 NV Wiper 5.0, 10.0, 50.0, 100.0 NV Wiper 5.0, 10.0, 50.0, 100.0 Mid-Scale 5.0, 10.0, 50.0, 100.0 Mid-Scale 5.0, 10.0, 50.0, 100.0 NV Wiper 5.0, 10.0, 50.0, 100.0 NV Wiper 5.0, 10.0, 50.0, 100.0
129 1.8V to 5.5V 129 1.8V to 5.5V 129 2.7V to 5.5V 129 2.7V to 5.5V 257 1.8V to 5.5V 257 1.8V to 5.5V 257 2.7V to 5.5V 257 2.7V to 5.5V
Floating either terminal (A or B) allows the device to be used as a Rheostat (variable resistor). Analog characteristics only tested from 2.7V to 5.5V unless otherwise noted. Please check Microchip web site for device release and availability.
DS22233A-page 2
© 2009 Microchip Technology Inc.
MCP434X/436X
www.DataSheet4U.com
1.0
ELECTRICAL CHARACTERISTICS
Absolute Maximum Ratings †
Voltage on VDD with respect to VSS ................ -0.6V to +7.0V Voltage on CS, SCK, SDI, SDI/SDO, WP, and RESET with respect to VSS ................................... -0.6V to 12.5V Voltage on all other pins (PxA, PxW, PxB, and SDO) with respect to VSS ............................ -0.3V to VDD + 0.3V Input clamp current, IIK (VI < 0, VI > VDD, VI > VPP ON HV pins) ......................±20 mA Output clamp current, IOK (VO < 0 or VO > VDD) ..................................................±20 mA Maximum output current sunk by any Output pin ......................................................................................25 mA Maximum output current sourced by any Output pin ......................................................................................25 mA Maximum current out of VSS pin .................................100 mA Maximum current into VDD pin ....................................100 mA Maximum current into PXA, PXW & PXB pins ............±2.5 mA Storage temperature ....................................-65°C to +150°C Ambient temperature with power applied ....................