MCP454X Datasheet, PDF (1/92 Pages) Microchip Technology – 7/8-Bit Single/Dual I2C Digital POT with Non-Volatile Memory

MCP454X/456X/464X/466X
7/8-Bit Single/Dual I²C 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 (typ.)
• 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
- 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 typ.)
• 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 kΩ 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, Non-Volatile 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 A1
SDA 3 ⁹ 6 P0B
SCL 2 _EP 7 A1
SDA 3 ⁹ 6 P0B
V_SS 4
5 P0W
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
11
8 P0B
7 P0W
6 P1W
DFN 3x3 (MF) *
* Includes Exposed Thermal Pad (EP); see Table 3-1.
© 2008 Microchip Technology Inc.
DS22107A-page 1