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CHAPTER 10 A/D CONVERTER
User’s Manual U15104EJ2V0UD
(3) Power-fail comparison mode register 3 (PFM3)
PFM3 is set with a 1-bit or 8-bit memory manipulation instruction.
Reset input clears this register to 00H.
Figure 10-4. Format of Power-Fail Comparison Mode Register 3 (PFM3)
PFEN3
Enable/disable of power-fail comparison
0
Disables power-fail comparison
1
Enables power-fail comparison
PFCM3
Selection of power-fail comparison mode
0
Generates interrupt request (INTAD) when ADCR3
≥
PFT
1
Generates interrupt request (INTAD) when ADCR3 < PFT
Note
PFHRM3
Selection of power-fail HALT repeat mode
0
Disables power-fail HALT repeat mode
1
Enables power-fail HALT repeat mode
Note
When bit 5 (PFHRM3) is set to 1, power-fail comparison manipulation is enabled in the HALT mode
in which A/D conversion is repeated until an interrupt request (INTAD3) is generated (this bit is reset
to 0 when INTAD3 is generated).
Address
FF16H
Symbol
PFM3
<7>
PFEN3
<6>
PFCM3
<5>
PFHRM3
4
0
3
0
2
0
1
0
0
0
After reset
00H
R/W
R/W