MCP414X/416X/424X/426X
7/8-Bit Single/Dual SPI Digital POT with
Non-Volatile Memory
Features
• Single or Dual Resistor Network options
• Potentiometer or Rheostat configuration options
• Resistor Network Resolution
- 7-bit: 128 Resistors (129 Steps)
- 8-bit: 256 Resistors (257 Steps)
• R
AB
Resistances options of:
- 5 kΩ
- 10 kΩ
- 50 kΩ
- 100 kΩ
• Zero-Scale to Full-Scale Wiper operation
• Low Wiper Resistance: 75Ω (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
- SDI/SDO multiplexing (MCP41X1 only)
• Resistor Network Terminal Disconnect Feature
via:
- Shutdown pin (SHDN)
- Terminal Control (TCON) Register
• 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 (-3dB) Operation:
- 2 MHz (typical) for 5.0 kΩ device
• Extended temperature range (-40°C to +125°C)
Description
The MCP41XX and MCP42XX devices offer a wide
range of product offerings using an SPI interface.
WiperLock Technology allows application-specific
calibration settings to be secured in the EEPROM.
Package Types (top view)
MCP41X1
Single Potentiometer
CS
SCK
SDI/SDO
V
SS
1
2
3
4
8
7
6
5
V
DD
P0B
P0W
P0A
MCP41X2
Single Rheostat
CS
1
8
V
DD
SCK
2
7
SDO
SDI
3
6
P0B
5
P0W
V
SS
4
PDIP, SOIC, MSOP
CS 1
SCK 2
SDI 3
V
SS
4
EP
9
8 V
DD
7 SDO
6 P0B
5 P0W
PDIP, SOIC, MSOP
CS 1
SCK 2
SDI/SDO 3
V
SS
4
EP
9
8 V
DD
7 P0B
6 P0W
5 P0A
3x3 DFN*
3x3 DFN*
CS
SCK
SDI
V
SS
P1B
P1W
P1A
1
2
3
4
5
6
7
14
13
12
11
10
9
8
V
DD
SDO SCK
SHDN SDI
WP
P0B V
SS
P0W V
SS
P0A
16 15 14 13
1
2
3
4
5
P1B
6
P1W
7
P1A
8
P0A
10 V
DD
EP
11
9 SDO
8 P0B
7 P0W
6 P1W
EP
17
12 WP
11 NC
10 P0B
9 P0W
PDIP, SOIC, TSSOP
4x4 QFN*
MCP42X2
Dual Rheostat
CS
SCK
SDI
V
SS
P1B
1
2
3
4
5
10
9
8
7
6
CS 1
V
DD
SDO SCK 2
P0B
P0W SDI 3
P1W V
SS
4
P1B 5
MSOP, DFN
3x3 DFN*
* Includes Exposed Thermal Pad (EP); see
©
2008 Microchip Technology Inc.
DS22059B-page 1
SHDN
MCP42X1
Dual Potentiometers
SDO
V
DD
CS
MICROCHIP [ MICROCHIP TECHNOLOGY ]
