MCP454X_13 Datasheet, PDF (1/102 Pages) Microchip Technology – 7/8-Bit Single/Dual I2C Digital POT with Nonvolatile Memory

MCP454X/456X/464X/466X
7/8-Bit Single/Dual I²C Digital POT with
Nonvolatile 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 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
• Nonvolatile Memory
- Automatic Recall of Saved Wiper Setting
- WiperLock™ Technology
- 10 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/Disabled
- WiperLock to be Enabled/Disabled
• Resistor Network Terminal Disconnect Feature
via the 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
• Wide Operating Voltage:
- 2.7V to 5.5V - Device Characteristics Specified
- 1.8V to 5.5V - Device Operation
• Wide Bandwidth (-3dB) Operation:
- 2 MHz (typ.) for 5.0 k Device
• Extended Temperature Range (-40°C to +125°C)
Description
The MCP45XX and MCP46XX devices offer a wide
range of product offerings using an I²C interface. This
family of devices support 7-bit and 8-bit resistor
networks, nonvolatile memory configurations, and
Potentiometer and Rheostat pinouts.
WiperLock Technology allows application-specific
calibration settings to be secured in the EEPROM.
Package Types (top view)
MCP45X1
Single Potentiometer
MCP45X2
Single Rheostat
HVC / A0
SCL
SDA
V_SS
18
27
36
45
MSOP
V_DD
P0B
P0W
P0A
HVC / A0
SCL
SDA
V_SS
18
27
36
45
MSOP
V_DD
A1
P0B
P0W
HVC / A0 1
8 V_DD HVC / A0 1
8 V_DD
SCL 2 _EP 7 P0B
SDA 3 ⁹ 6 P0W
SCL 2 _EP 7 A1
SDA 3 ⁹ 6 P0B
V_SS 4
5 P0A
V_SS 4
5 P0W
DFN 3x3 (MF) *
DFN 3x3 (MF) *
MCP46X1 Dual Potentiometers
HVC/A0
SCL
SDA
V_SS
P1B
P1W
P1A
1
14
2
13
3
12
4
11
5
10
6
9
7
8
TSSOP
V_DD
A1
A2
WP
P0B
P0W
P0A
16 15 14 13
SCL 1
12 WP
SDA 2 _EP 11 NC
V_SS 3
17 ₁₀ P0B
V_SS 4
9 P0W
5678
QFN-16 4x4 (ML) *
MCP46X2 Dual Rheostat
HVC/A0
SCL
SDA
V_SS
P1B
1
10
2
9
3
8
4
7
5
6
MSOP
V_DD ^{HVC / A0 1}
A1
SCL 2
P0B
P0W
SDA 3
P1W
V_SS 4
P1B 5
10 V_DD
9 A1
EP _{8 P0B}
11 _{7 P0W}
6 P1W
DFN 3x3 (MF) *
* Includes Exposed Thermal Pad (EP); see Table 3-1.
 2008-2013 Microchip Technology Inc.
DS22107B-page 1