Part Number
|
MIC74 |
Manufacturer
|
Micrel Semiconductor |
Description
|
2-Wire Serial I/O Expander and Fan Controller Advance Information |
Published
|
Mar 26, 2005 |
Detailed Description
|
MIC74
Micrel
MIC74
2-Wire Serial I/O Expander and Fan Controller Advance Information
General Description
The MIC74 is...
|
Datasheet
|
MIC74
|
Overview
MIC74
Micrel
MIC74
2-Wire Serial I/O Expander and Fan Controller Advance Information
General Description
The MIC74 is a fully programmable serial-to-parallel I/O expander compatible with the SMBus™ (system management bus) protocol.
It acts as a “slave” on the bus, providing eight independent I/O lines.
Each I/O bit can be individually programmed as an input or output.
If programmed as an output, each I/O bit can be programmed as an open-drain or complementary push-pull output.
If desired, the four most significant I/O bits can be programmed to implement fan speed control.
An internal clock generator and state machine eliminate the overhead generally associated with “bit-banging” fan speed...
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