30 lines
992 B
Plaintext
30 lines
992 B
Plaintext
|
Kernel driver MCP3021
|
||
|
|
======================
|
||
|
|
|
||
|
|
Supported chips:
|
||
|
|
* Microchip Technology MCP3021
|
||
|
|
Prefix: 'mcp3021'
|
||
|
|
Datasheet: http://ww1.microchip.com/downloads/en/DeviceDoc/21805a.pdf
|
||
|
|
* Microchip Technology MCP3221
|
||
|
|
Prefix: 'mcp3221'
|
||
|
|
Datasheet: http://ww1.microchip.com/downloads/en/DeviceDoc/21732c.pdf
|
||
|
|
|
||
|
|
Authors:
|
||
|
|
Mingkai Hu
|
||
|
|
Sven Schuchmann <schuchmann@schleissheimer.de>
|
||
|
|
|
||
|
|
Description
|
||
|
|
-----------
|
||
|
|
|
||
|
|
This driver implements support for the Microchip Technology MCP3021 and
|
||
|
|
MCP3221 chip.
|
||
|
|
|
||
|
|
The Microchip Technology Inc. MCP3021 is a successive approximation A/D
|
||
|
|
converter (ADC) with 10-bit resolution. The MCP3221 has 12-bit resolution.
|
||
|
|
|
||
|
|
These devices provide one single-ended input with very low power consumption.
|
||
|
|
Communication to the MCP3021/MCP3221 is performed using a 2-wire I2C
|
||
|
|
compatible interface. Standard (100 kHz) and Fast (400 kHz) I2C modes are
|
||
|
|
available. The default I2C device address is 0x4d (contact the Microchip
|
||
|
|
factory for additional address options).
|