| Xie Xiaobo | 5510e62 | 2012-03-23 10:02:20 +0100 | [diff] [blame] | 1 | Kernel driver MCP3021 |
| 2 | ====================== |
| 3 | |
| 4 | Supported chips: |
| 5 | * Microchip Technology MCP3021 |
| 6 | Prefix: 'mcp3021' |
| 7 | Datasheet: http://ww1.microchip.com/downloads/en/DeviceDoc/21805a.pdf |
| Sven Schuchmann | 592758b | 2012-09-21 13:04:22 +0200 | [diff] [blame] | 8 | * Microchip Technology MCP3221 |
| 9 | Prefix: 'mcp3221' |
| 10 | Datasheet: http://ww1.microchip.com/downloads/en/DeviceDoc/21732c.pdf |
| Xie Xiaobo | 5510e62 | 2012-03-23 10:02:20 +0100 | [diff] [blame] | 11 | |
| Sven Schuchmann | 592758b | 2012-09-21 13:04:22 +0200 | [diff] [blame] | 12 | Authors: |
| 13 | Mingkai Hu |
| 14 | Sven Schuchmann <schuchmann@schleissheimer.de> |
| Xie Xiaobo | 5510e62 | 2012-03-23 10:02:20 +0100 | [diff] [blame] | 15 | |
| 16 | Description |
| 17 | ----------- |
| 18 | |
| Sven Schuchmann | 592758b | 2012-09-21 13:04:22 +0200 | [diff] [blame] | 19 | This driver implements support for the Microchip Technology MCP3021 and |
| 20 | MCP3221 chip. |
| Xie Xiaobo | 5510e62 | 2012-03-23 10:02:20 +0100 | [diff] [blame] | 21 | |
| 22 | The Microchip Technology Inc. MCP3021 is a successive approximation A/D |
| Sven Schuchmann | 592758b | 2012-09-21 13:04:22 +0200 | [diff] [blame] | 23 | converter (ADC) with 10-bit resolution. The MCP3221 has 12-bit resolution. |
| 24 | |
| 25 | These devices provide one single-ended input with very low power consumption. |
| 26 | Communication to the MCP3021/MCP3221 is performed using a 2-wire I2C |
| 27 | compatible interface. Standard (100 kHz) and Fast (400 kHz) I2C modes are |
| 28 | available. The default I2C device address is 0x4d (contact the Microchip |
| 29 | factory for additional address options). |