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CHAPTER 13 10-BIT A/D CONVERTER (
µ
PD780354, 780354Y SUBSERIES)
User’s Manual U15798EJ2V0UD
Table 13-2. Settings of ADCS0 and ADCE0
ADCS0
ADCE0
A/D Conversion Operation
0
0
Stop status (DC power consumption path does not exist)
0
1
Conversion waiting mode (only reference voltage generator consumes power)
1
0
Conversion mode (reference voltage generator operation stopped
Note
)
1
1
Conversion mode (reference voltage generator operates)
Note
Data of the first conversion cannot be used immediately after A/D conversion is started.
Figure 13-3. Timing Chart When Boost Reference Voltage Generator Is Used
Note
14
µ
s or more are required for reference voltage stabilization.
Cautions 1. Stop A/D conversion operations once before rewriting FR00 to FR02 to other than the same
data.
2. Before clearing ADCE0, clear ADCS0.
ADCE0
Boost reference voltage
ADCS0
Conversion
operation
Conversion
operation
Conversion stopped
Conversion
waiting
Boost reference voltage generator: operating
Note