Datasheet

78K0/Kx2-L CHAPTER 13 OPERATIONAL AMPLIFIERS
R01UH0028EJ0400 Rev.4.00 444
Sep 27, 2010
Table 13-5. Setting Functions of P21/ANI1/AMP0OUT/PGAIN Pin
ADPC0 Register PM2 Register
OPAMP0E
bit
PGAEN bit ADS Register P21/ANI1/AMP0OUT/PGAIN Pin
Selects ANI1.
Analog input (to be converted into digital
signals)
0 0
Does not select ANI1.
Analog input (not to be converted into
digital signals)
Selects PGAOUT.
PGA input (PGA output is converted into
digital signals)
Selects ANI1.
PGA input (to be converted into digital
signals)
0 1
Does not select
PGAOUT.
PGA input (not to be converted into digital
signals)
Selects ANI1.
Operational amplifier output (to be
converted into digital signals)
1 0
Does not select ANI1.
Operational amplifier 0 output (not to be
converted into digital signals)
Selects PGAOUT.
Operational amplifier 0 output and PGA
input (PGA output is converted into digital
signals)
Selects ANI1.
Operational amplifier 0 output (to be
converted into digital signals)
Input mode
1 1
Does not select
PGAOUT and ANI1.
Operational amplifier 0 output (not to be
converted into digital signals)
Analog I/O
selection
Output mode
− −
Setting prohibited
Selects ANI1. Setting prohibited 0
−
Does not select ANI1. Digital input
Input mode
1
− −
Setting prohibited
Selects ANI1. Setting prohibited 0
−
Does not select ANI1. Digital output
Digital I/O
selection
Output mode
1
− −
Setting prohibited
Remark ADPC0: A/D port configuration register 0
PM2: Port mode register 2
OPAMP0E: Bit 7 of operational amplifier 0 control register (AMP0M)
PGAEN: Bit 6 of AMP0M
ADS: Analog input channel specification register
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