MCP4142 Microchip Technology Inc., MCP4142 Datasheet - Page 79

• Manufacturer Part Number: MCP4142
• Description: 7/8-bit Single/dual Spi Digital Pot With Volatile Memory
• Manufacturer: Microchip Technology Inc.

APPENDIX A:
Revision A (August 2007)
• Original Release of this Document.
© 2007 Microchip Technology Inc.
REVISION HISTORY
MCP414X/416X/424X/426X
APPENDIX B:
This is intended to give an overview of some of the
differences to be aware of when migrating from the
MCP41XXX and MCP42XXX devices.
B.1
Here are some of the differences to be aware of:
1.
2.
3.
4.
5.
6.
7.
8.
9.
10. Interface signals now have internal pull-up
B.2
Here are some of the differences to be aware of:
1.
2.
3.
4.
5.
6.
7.
8.
9.
10. Verify device’s electrical specifications
11. Interface signals are now high voltage tolerant
12. Interface signals now have internal pull-up
SI pin is now SDI/SDO pin, and the contents of
the device memory can be read
Need to address the Terminal Connect Feature
(TCON register) of MCP41XX
MCP41XX supports software Shutdown mode
New 5 kΩ version
MCP41XX have 7-bit resolution options
MCP41XX are Non-Volatile
Alternate
configuration)
Verify device’s electrical specifications
Interface signals are now high voltage tolerant
resistors
Hardware Reset (RS) pin replace by Hardware
Write Protect (WP) pin
Daisy chaining of devices is no longer supported
SDO pin allows contents of device memory to be
read
Need to address the Terminal Connect Feature
(TCON register) of MCP42XX
MCP42XX supports software Shutdown mode
New 5 kΩ version
MCP42XX have 7-bit resolution options
MCP42XX are Non-Volatile
Alternate package/pinout versions (for Rheostat
configuration)
resistors
MCP41XXX to MCP41XX
Differences
MCP42XXX to MCP42XX
Differences
pinout
MIGRATING FROM
THE MCP41XXX AND
MCP42XXX DEVICES
versions
DS22059A-page 79
(for
Rheostat