Description: AVR single-chip SPI serial ADC interface design SPI (SerialPeripheralInterface--- Serial Peripheral Interface) bus system is a synchronous serial peripheral interface that allows MCU with a variety of peripheral devices to the serial approach to communications , data exchange, widely used in various industrial control. MAX187 with sample/hold circuit and the case-by-bit compare register will be entered into the analog signal is converted to 12-bit digital signal, the sample/hold circuit does not require an external capacitor. MAX187 has two kinds of operating modes: normal mode and sleep mode, will be home to enter the sleep mode for low-level, when the current consumption down to 10μA. Or vacant home for high into the normal operating mode.
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AVR_SPI_ADC.doc
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