MCP433X/435X
7/8-Bit Quad SPI Digital POT with 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)
• R
AB
Resistances Options of:
- 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°C to 70°C)
- Ratiometric (Potentiometer): 15 ppm typical
• SPI Serial Interface (10 MHz, Modes 0,0 and 1,1):
- High-Speed Read/Writes to wiper registers
• 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 µA 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 k device
• Extended Temperature Range (-40°C to +125°C)
Package Types (Top View)
MCP43X1
Quad Potentiometers
TSSOP
P3A
P3W
P3B
CS
SCK
SDI
V
SS
P1B
P1W
P1A
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
P2A
P2W
P2B
V
DD
SDO
RESET
NC
P0B
P0W
P0A
MCP43X1
Quad Potentiometers
4x4 QFN*
P3W
P2W
P2A
P3A
P2B
15
13
12
11
6
P1B
7
P1W
8
P1A
9 10
P0A
P0W
20 19 18 17 16
P3B
CS
SCK
SDI
V
SS
1
2
3
4
5
EP
21
V
DD
RESET
NC
P0B
14 SDO
MCP43X2
Quad Rheostat
TSSOP
P3W
P3B
CS
SCK
SDI
V
SS
P1B
1
2
3
4
5
6
7
14
13
12
11
10
9
8
P2W
P2B
V
DD
SDO
P0B
P0W
P1W
* Includes Exposed Thermal Pad (EP); see
2010 Microchip Technology Inc.
DS22242A-page 1
MICROCHIP [ MICROCHIP TECHNOLOGY ]
