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CHAPTER 12 10-BIT A/D CONVERTER (
µ
PD780034AS SUBSERIES)
Preliminary User’s Manual U16035EJ1V0UM
Figure 12-17. A/D Conversion End Interrupt Request Generation Timing
ADM0 rewrite
(start of ANIn conversion)
ADIF is set but ANIm
conversion has not ended.
A/D conversion
ADCR0
INTAD0
ANIn
ANIn
ANIm
ANIm
ANIn
ANIn
ANIm
ANIm
ADS0 rewrite
(start of ANIm conversion)
Remarks 1.
n = 0, 1, ......, 3
2.
m = 0, 1, ......, 3
(8) Conversion results just after A/D conversion start
The first A/D conversion value just after A/D conversion operations start may not fall within the rating. Polling
A/D conversion end interrupt request (INTAD0) and take measures such as removing the first conversion results.
(9) A/D conversion result register 0 (ADCR0) read operation
When writing is performed to the A/D converter mode register 0 (ADM0) and analog input channel specification
register 0 (ADS0), the contents of ADCR0 may become undefined. Read the conversion result following
conversion completion before writing to ADM0, ADS0. Using a timing other than the above may cause an incorrect
conversion result to be read.
