MCP454X/456X/464X/466X
2
7/8-Bit Single/Dual I C Digital POT with
Nonvolatile Memory
Features
Description
Single or Dual Resistor Network Options The MCP45XX and MCP46XX devices offer a wide
2
Potentiometer or Rheostat Configuration Options range of product offerings using an I C interface. This
Resistor Network Resolution family of devices support 7-bit and 8-bit resistor
- 7-bit: 128 Resistors (129 Steps) networks, nonvolatile memory configurations, and
- 8-bit: 256 Resistors (257 Steps) Potentiometer and Rheostat pinouts.
R Resistances Options of:
AB
WiperLock Technology allows application-specific
-5k
calibration settings to be secured in the EEPROM.
-10k
-50k
Package Types (top view)
-100k
MCP45X1
MCP45X2
Zero-Scale to Full-Scale Wiper Operation
Single Potentiometer
Single Rheostat
Low Wiper Resistance: 75 (typical)
Low Tempco:
V
HVC / A0
1 8 DD HVC / A0 1 8 V
DD
- Absolute (Rheostat): 50 ppm typical
SCL 7 P0B SCL 7 A1
2 2
(0C to 70C)
SDA 3 6 P0W SDA 3 6 P0B
V 45 P0A V 45 P0W
- Ratiometric (Potentiometer): 15 ppm typical
SS SS
Nonvolatile Memory
MSOP MSOP
- Automatic Recall of Saved Wiper Setting
- WiperLock Technology
HVC / A0 1 8 V HVC / A0 1 8 V
DD DD
- 10 General Purpose Memory Locations
SCL P0B SCL A1
2 7 2 7
EP EP
2
I C Serial Interface
9 9
SDA P0W SDA P0B
3 6 3 6
- 100 kHz, 400 kHz and 3.4 MHz Support
V P0A V P0W
4 5 4 5
SS SS
Serial Protocol Allows:
DFN 3x3 (MF) * DFN 3x3 (MF) *
- High-Speed Read/Write to Wiper
- Read/Write to EEPROM
MCP46X1 Dual Potentiometers
- Write Protect to be Enabled/Disabled
V
HVC/A0 1 14
DD
- WiperLock to be Enabled/Disabled
A1
13
SCL 2
Resistor Network Terminal Disconnect Feature
SDA 12 A2
3
via the Terminal Control (TCON) Register V 11 WP
4
SS 16 15 14 13
P0B
P1B 5 10
SCL 1 12 WP
Write Protect Feature:
P1W P0W
6 9
SDA NC
2 11
- Hardware Write Protect (WP) Control Pin EP
P0A
P1A 7 8
17
P0B
V 3 10
- Software Write Protect (WP) Configuration Bit
SS
TSSOP V 4 P0W
9
SS
Brown-out Reset Protection (1.5V typical)
56 7 8
Serial Interface Inactive Current (2.5 uA typical)
High-Voltage Tolerant Digital Inputs: Up to 12.5V
Wide Operating Voltage:
QFN-16 4x4 (ML) *
- 2.7V to 5.5V - Device Characteristics Specified
- 1.8V to 5.5V - Device Operation
MCP46X2 Dual Rheostat
Wide Bandwidth (-3dB) Operation:
HVC / A0 1 10 V
- 2 MHz (typ.) for 5.0 k Device V DD
HVC/A0 1 10
DD
9 A1
SCL 2
Extended Temperature Range (-40C to +125C) SCL 2 9 A1
SDA P0B
3 8
EP
SDA 3 8 P0B
P0W
V 4 7
11
SS
V 4 7 P0W
P1W SS
P1B 5 6
P1B 5 6 P1W
MSOP
DFN 3x3 (MF) *
* Includes Exposed Thermal Pad (EP); see Table 3-1.
2008-2013 Microchip Technology Inc. DS22107B-page 1
P1B
HVC/A0
P1W
V
DD
P1A A1
A2
P0AMCP454X/456X/464X/466X
Device Block Diagram
V Power-up/
P0A
DD
Resistor
Brown-out
Network 0
V
SS
Control
(Pot 0)
P0W
2 Wiper 0
A2 I C Serial
& TCON
Interface
A1
Register
Module &
P0B
HVC/A0
Control
SCL Logic
(WiperLock
SDA
2 P1A
I C Interface
Resistor
Technology)
Network 1
WP
(Pot 1)
P1W
Wiper 1
Memory (16x9)
& TCON
Wiper0 (V & NV) Register
P1B
Wiper1 (V & NV)
TCON
For Dual Resistor Network
STATUS
Devices Only
Data EEPROM
(10 x 9-bits)
Device Features
Resistance (typical)
V
DD
Wiper
Wiper
Device Operating
Configuration
(2)
R Options (k ) - R
Range
AB W
( )
(3) (1) 2
MCP4531 1 Potentiometer I C RAM No Mid-Scale 5.0, 10.0, 50.0, 100.0 75 129 1.8V to 5.5V
(3) 2
MCP4532 1 Rheostat I C RAM No Mid-Scale 5.0, 10.0, 50.0, 100.0 75 129 1.8V to 5.5V
(1) 2
MCP4541 1 Potentiometer I C EE Yes NV Wiper 5.0, 10.0, 50.0, 100.0 75 129 2.7V to 5.5V
2
MCP4542 1 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
MCP4551 1 Potentiometer I C RAM No Mid-Scale 5.0, 10.0, 50.0, 100.0 75 257 1.8V to 5.5V
(3) 2
MCP4552 1 Rheostat I C RAM No Mid-Scale 5.0, 10.0, 50.0, 100.0 75 257 1.8V to 5.5V
(1) 2
MCP4561 1 Potentiometer I C EE Yes NV Wiper 5.0, 10.0, 50.0, 100.0 75 257 2.7V to 5.5V
2
MCP4562 1 Rheostat I C EE Yes NV Wiper 5.0, 10.0, 50.0, 100.0 75 257 2.7V to 5.5V
(3) (1) 2
MCP4631 2 Potentiometer I C RAM No Mid-Scale 5.0, 10.0, 50.0, 100.0 75 129 1.8V to 5.5V
(3) 2
MCP4632 2 Rheostat I C RAM No Mid-Scale 5.0, 10.0, 50.0, 100.0 75 129 1.8V to 5.5V
(1) 2
MCP4641 2 Potentiometer I C EE Yes NV Wiper 5.0, 10.0, 50.0, 100.0 75 129 2.7V to 5.5V
2
MCP4642 2 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
MCP4651 2 Potentiometer I C RAM No Mid-Scale 5.0, 10.0, 50.0, 100.0 75 257 1.8V to 5.5V
(3) 2
MCP4652 2 Rheostat I C RAM No Mid-Scale 5.0, 10.0, 50.0, 100.0 75 257 1.8V to 5.5V
(1) 2
MCP4661 2 Potentiometer I C EE Yes NV Wiper 5.0, 10.0, 50.0, 100.0 75 257 2.7V to 5.5V
2
MCP4662 2 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
DS22107B-page 2 2008-2013 Microchip Technology Inc.
# of POTs
Control
Interface
Memory
Type
WiperLock
Technology
POR Wiper
Setting
# of Steps