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  Microchip Technology Semiconductor Electronic Components Datasheet  

MCP4462 Datasheet

7/8-Bit Quad I2C Digital POT

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MCP444X/446X
7/8-Bit Quad I2C Digital POT with
Nonvolatile 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
• Nonvolatile Memory
- Automatic Recall of Saved Wiper Setting
- WiperLock™ Technology
- 5 General Purpose Memory Locations
• I2C Serial Interface
- 100 kHz, 400 kHz, and 3.4 MHz support
• Serial protocol allows:
- High-Speed Read/Write to wiper
- Read/Write to EEPROM
- Write Protect to be enabled/disable
- WiperLock to be enabled/disabled
• 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
(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 kΩ device
• Extended temperature range (-40°C to +125°C)
• Package Types: 4x4 QFN-20, TSSOP-20 and
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 WP
12 P0B
12 P0W
11 P0A
TSSOP
P3B 1 20 19 18 17 16 15 VDD
HVC/A0 2
14 A1
SCL 3
SDA 4
EP
21
13 RESET
12 WP
VSS 5
11 P0B
6 7 8 9 10
4x4 QFN
MCP44X2 Quad Rheostat
P3W
P3B
HVC/A0
SCL
SDA
VSS
P1B
1 14
2 13
3 12
4 11
5 10
69
78
TSSOP
P2W
P2B
VDD
A1
P0B
P0W
P1W
© 2010 Microchip Technology Inc.
DS22265A-page 1


  Microchip Technology Semiconductor Electronic Components Datasheet  

MCP4462 Datasheet

7/8-Bit Quad I2C Digital POT

No Preview Available !

MCP444X/446X
Device Block Diagram
VDD
VSS
A1
HVC/A0
SCL
SDA
WP
RESET
Power-up/
Brown-out
Control
I2C Serial
Interface
Module &
Control
Logic
(WiperLock™
Technology)
Memory (16x9)
Wiper0 (V & NV)
Wiper1 (V & NV)
Wiper2 (V & NV)
Wiper3 (V & NV)
TCON0
TCON1
STATUS
Data EEPROM
(5 x 9-bits)
Resistor
Network 0
(Pot 0)
Wiper 0
& TCON0
Register
Resistor
Network 1
(Pot 1)
Wiper 1
& TCON0
Register
Resistor
Network 2
(Pot 2)
Wiper 2
& TCON1
Register
Resistor
Network 3
(Pot 3)
Wiper 3
& TCON1
Register
P0A
P0W
P0B
P1A
P1W
P1B
P2A
P2W
P2B
P3A
P3W
P3B
Device Features
Device
Wiper
Configuration
Resistance (typical)
RAB Options (kΩ)
Wiper
- RW
(Ω)
VDD
Operating
Range(2)
MCP4431(3) 4 Potentiometer (1) I2C RAM No Mid-Scale 5.0, 10.0, 50.0, 100.0 75 129 1.8V to 5.5V
MCP4432 (3) 4
Rheostat
I2C RAM No Mid-Scale 5.0, 10.0, 50.0, 100.0 75 129 1.8V to 5.5V
MCP4441 4 Potentiometer (1) I2C EE Yes NV Wiper 5.0, 10.0, 50.0, 100.0 75 129 2.7V to 5.5V
MCP4442 4
Rheostat
I2C EE Yes NV Wiper 5.0, 10.0, 50.0, 100.0 75 129 2.7V to 5.5V
MCP4451(3) 4 Potentiometer(1) I2C RAM No Mid-Scale 5.0, 10.0, 50.0, 100.0 75 257 1.8V to 5.5V
MCP4452(3) 4
Rheostat
I2C RAM No Mid-Scale 5.0, 10.0, 50.0, 100.0 75 257 1.8V to 5.5V
MCP4461 4 Potentiometer(1) I2C EE Yes NV Wiper 5.0, 10.0, 50.0, 100.0 75 257 2.7V to 5.5V
MCP4462 4
Rheostat
I2C EE Yes NV Wiper 5.0, 10.0, 50.0, 100.0 75 257 2.7V to 5.5V
Note 1:
2:
3:
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.
DS22265A-page 2
© 2010 Microchip Technology Inc.


Part Number MCP4462
Description 7/8-Bit Quad I2C Digital POT
Maker Microchip Technology
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MCP4462 Datasheet PDF






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