NEC mPD780024AS Series Preliminary User's Manual page 178

CHAPTER 11 8-BIT A/D CONVERTER ( µ PD780024AS SUBSERIES)
Sampling time
A/D converter
Sampling
operation
SAR
Undefined
ADCR0
INTAD0
A/D conversion operations are performed continuously until bit 7 (ADCS0) of the A/D converter mode register 0
(ADM0) is reset (0) by software.
If a write operation is performed to the ADM0 or the analog input channel specification register 0 (ADS0) during
an A/D conversion operation, the conversion operation is initialized, and if the ADCS0 bit is set (1), conversion starts
again from the beginning.
RESET input sets the A/D conversion result register 0 (ADCR0) to 0000H.
178
Figure 11-5. Basic Operation of 8-Bit A/D Converter
Conversion time
C0H
or
80H
40H
Preliminary User's Manual U16035EJ1V0UM
A/D conversion
Conversion
result
Conversion
result