MCP4461-103E Datasheet, PDF (1/100 Pages) Microchip Technology – 7/8-Bit Quad I2C Digital POT with Nonvolatile Memory

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)
• R_AB 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 1
P3W 2
P3B 3
HVC/A0 4
SCL 5
SDA 6
V_SS 7
P1B 8
P1W 9
P1A 10
20 ^P2A
19 P2W
18 P2B
17 V_DD
16 A1
15 RESET
14 WP
12 ^P0B
12 P0W
11 ^P0A
TSSOP
P3B 1 ^{20 19 18 17 16 15 VDD}
14 A1
HVC/A0 2
SCL 3
SDA ₄
EP
21
13 RESET
12 WP
V_SS 5
11 P0B
6 7 8 9 10
4x4 QFN
MCP44X2 Quad Rheostat
P3W
P3B
HVC/A0
SCL
SDA
V_SS
P1B
1
14
2
13
3
12
4
11
5
10
6
9
7
8
TSSOP
P2W
P2B
V_DD
A1
P0B
P0W
P1W
© 2010 Microchip Technology Inc.
DS22265A-page 1