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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 | |
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8 | * Microchip Technology MCP3221 |
9 | Prefix: 'mcp3221' | |
10 | Datasheet: http://ww1.microchip.com/downloads/en/DeviceDoc/21732c.pdf | |
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12 | Authors: |
13 | Mingkai Hu | |
14 | Sven Schuchmann <schuchmann@schleissheimer.de> | |
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15 | |
16 | Description | |
17 | ----------- | |
18 | ||
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19 | This driver implements support for the Microchip Technology MCP3021 and |
20 | MCP3221 chip. | |
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21 | |
22 | The Microchip Technology Inc. MCP3021 is a successive approximation A/D | |
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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). |