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MCP4642

更新时间： 2024-11-19 11:04:59
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美国微芯 - MICROCHIP 电位器存储
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92页 2071K
描述
7/8-Bit Single/Dual I2C Digital POT with Non-Volatile Memory

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MCP4642 数据手册

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MCP454X/456X/464X/466X  
7/8-Bit Single/Dual I2C Digital POT with  
Non-Volatile Memory  
Features  
Description  
• 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)  
• RAB Resistances options of:  
- 5 kΩ  
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.  
- 10 kΩ  
- 50 kΩ  
- 100 kΩ  
Package Types (top view)  
MCP45X1  
Single Potentiometer  
MCP45X2  
Single Rheostat  
• 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  
HVC / A0  
HVC / A0  
VDD  
P0B  
P0W  
P0A  
VDD  
1
2
3
4
1
2
3
4
8
7
6
5
8
7
6
5
A1  
SCL  
SDA  
VSS  
SCL  
SDA  
VSS  
P0B  
P0W  
MSOP  
MSOP  
HVC / A0  
VDD HVC / A0  
VDD  
1
8
1
8
SCL  
SDA  
VSS  
A1  
SCL  
SDA  
VSS  
A1  
2
3
4
7
6
5
2
3
4
7
6
5
EP  
9
EP  
9
P0B  
P0W  
P0B  
P0W  
DFN 3x3 (MF) *  
MCP46X1 Dual Potentiometers  
DFN 3x3 (MF) *  
VDD  
A1  
12 A2  
HVC/A0  
SCL  
14  
13  
1
2
3
4
5
6
7
• Resistor Network Terminal Disconnect Feature  
via the Terminal Control (TCON) Register  
SDA  
VSS  
P1B  
P1W  
P1A  
11  
10  
9
WP  
16 15 14 13  
P0B  
P0W  
P0A  
SCL  
SDA  
VSS  
VSS  
WP  
NC  
P0B  
P0W  
1
2
3
4
12  
11  
10  
9
• 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  
EP  
17  
8
TSSOP  
5 6 7  
8
QFN-16 4x4 (ML) *  
MCP46X2 Dual Rheostat  
HVC / A0  
V
DD  
1
10  
VDD  
A1  
P0B  
P0W  
P1W  
HVC/A0  
SCL  
10  
9
8
7
6
1
2
3
4
5
• Extended temperature range (-40°C to +125°C)  
SCL  
SDA  
VSS  
A1  
2
3
4
5
9
8
7
6
SDA  
EP  
11  
P0B  
P0W  
P1W  
VSS  
P1B  
P1B  
MSOP  
DFN 3x3 (MF) *  
* Includes Exposed Thermal Pad (EP); see Table 3-1.  
© 2008 Microchip Technology Inc.  
DS22107A-page 1  
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