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CHAPTER 18 8-/10-BIT A/D CONVERTER
18.4 Interrupt of 8-/10-bit A/D Converter
When A/D conversion is terminated and its results are stored in the A/D data register
(ADCR), the 8-/10-bit A/D converter generates an interrupt request. The EI
2
OS function
can be used.
■ Interrupt of A/D Converter
When A/D conversion of the analog input voltage is terminated and its results are stored in the A/D data
register (ADCR), the interrupt request flag bit in the A/D control status register (ADCS:INT) is set to "1".
When the interrupt request flag bit is set (ADCS:INT = 1) with an interrupt request output enabled
(ADCS:INTE = 1), an interrupt request is generated.
■ 8-/10-bit A/D Converter Interrupt and EI
2
OS
■ EI
2
OS Function of 8-/10-bit A/D Converter
In the 8-/10-bit A/D converter, the EI
2
OS function can be used to transfer the A/D conversion results from
the A/D data register (ADCR) to memory. If the EI
2
OS function is used, the A/D-converted data protection
function is activated to cause A/D conversion to pause during memory transfer and prevent data loss as A/
D conversion is performed continuously.
Reference: See "CHAPTER 3 INTERRUPTS" for details of the interrupt number, interrupt control register, and
interrupt vector address.