7/8-Bit Volatile Quad Digital POT
Description
MCP443X/5X
7/8-Bit Volatile Quad Digital POT with I2C Interface
Features
• Quad Resistor Network • Potentiometer or Rheostat Configuration Options • Resistor Network Resolution:
7-bit – 128 Resistors (129 Taps) 8-bit – 256 Resistors (257 Taps) • Four RAB Resistances options: 5 k 10 k 50 k 100 k • Zero-scale to Full-scale Wiper Operation • Low Wiper Resistance – 75 typical • Low Tempco: Absolute (Rheostat) – 50 ppm typical (0°-70°C) Ratiometric (Potentiometer) – 15 ppm typical • I2C Serial Interface Support: 100 kHz 400 kHz 3.
4 MHz • Serial Protocol Allows High-Speed Read/Write to Wiper • Resistor Network Terminal Disconnect Feature via Terminal Control (TCON) Register • Reset Input Pin • 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, 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 (-40°C to +125°C) • Three Package Types: 4x4 QFN-20 TSSOP-20 TSSOP-14
Package Types (Top View)
MCP44X1 Quad Potentiometers
P3A P3W P3B
HVC/A0 SCL SDA VSS P1B P1W P1A
1 2 3 4 5 6 7 8 9 10
20 P2A 19 P2W 18 P2B 17 VDD 16 A1 15 RESET 14 NC 12 P0B 12 P0W 11 P0A
TSSOP
P3W P3A P2A P2W P2B
P3B 1 20 19 18 17 16 15 VDD
HVC/A0 2
14 A1
SCL 3 SDA 4
EP 21
13 RESET 12 NC
VSS 5
11 P0B
6 7 8 9 10
P1B P1W P1A P0A P0W
4x4 QFN
MCP44X2 Quad Rheostat
P3W P3B
HVC/A0 SCL SDA VSS P1B
1 2 3 4 5 6 7
14 P2W
13 P2B
12 11
VDD A1
10 P0B
9 P0W
8 P1W
TSSOP
2010 Microchip Technology Inc.
DS22267A-page 1
MCP443X/5X
Device Block Diagram
VDD VSS
A1 HVC/A0
SCL SDA
Power-up/ Brown-out Control
I2C Serial Interface Module & Control Logic
RESET
Memory (16x9)
Wiper0 (Vol) Wiper1 (Vol) Wiper2 (Vol) Wiper3 (Vol)
TCON0 TCON1
Resistor Netw...
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