UPD78F0838 Renesas Electronics Corporation., UPD78F0838 Datasheet - Page 355

• Manufacturer Part Number: UPD78F0838
• Description: 8-bit Single-chip Microcontrollers
• Manufacturer: Renesas Electronics Corporation.

Note To stabilize the internal circuit, the time from the rising of the ADCE bit to the rising of the ADCS bit must be
Cautions 1. A/D conversion must be stopped before rewriting bits FR0 to FR2 to values other than the
1 s or longer.
Note Ignore data of the first conversion because it is not guaranteed range.
ADCS
2. If data is written to ADM, a wait cycle is generated. Do not write data to ADM when the CPU
0
0
1
1
identical data.
is operating on the subsystem clock and the peripheral hardware clock is stopped. For
details, see CHAPTER 32 CAUTIONS FOR WAIT.
Comparator
ADCE
ADCS
ADCE
0
1
0
1
Figure 11-4. Timing Chart When Comparator Is Used
Stop status (DC power consumption path does not exist)
Conversion waiting mode (comparator operation, only comparator consumes
power)
Conversion mode (comparator operation stopped
Conversion mode (comparator operation)
Note
Table 11-1. Settings of ADCS and ADCE
Preliminary User’s Manual U19748EJ1V0UD
Conversion
CHAPTER 11 A/D CONVERTER
operation
Comparator operation
Conversion
A/D Conversion Operation
waiting
Conversion
operation
Note
)
Conversion
stopped
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