UPD78F1502AGK-GAK-AX Datasheet, PDF (444/1031 Pages) Renesas Technology Corp – 16-Bit Single-Chip Microcontrollers

78K0R/Lx3
CHAPTER 12 OPERATIONAL AMPLIFIER (μ PD78F150xA only)
(2) Operational amplifier control register (OAC)
This register controls the operations of operational amplifiers 0 to 2.
OAC can be set by a 1-bit or 8-bit memory manipulation instruction.
Reset signal generation clears this register to 00H.
Remark 78K0R/LF3:
Operational amplifiers 0, 1
78K0R/LG3, 78K0R/LH3: Operational amplifiers 0 to 2
Figure 12-3. Format of Operational Amplifier Control Register (OAC)
Address: FFF33H After reset: 00H R/W
Symbol
7
6
5
4
3
2
1
OAC
0
0
0
0
0
OAEN2
OAEN1
0
OAEN0
OAEN2
0
1
Operational amplifier 2 operation control
Stops operational amplifier 2 operation
Enables operational amplifier 2 operation
OAEN1
0
1
Operational amplifier 1 operation control
Stops operational amplifier 1 operation
Enables operational amplifier 1 operation
OAEN0
0
1
Operational amplifier 1 operation control
Stops operational amplifier 0 operation
Enables operational amplifier 0 operation
Cautions 1. Use the ADPC register to specify as analog inputs the pins to be used with operational
amplifiers.
2. When using as digital inputs the pins of ports 2 and 15, which are not used with operational
amplifiers, when the operational amplifiers are used, make sure that the input levels are fixed.
R01UH0004EJ0501 Rev.5.01
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Jun 20, 2011