Datasheet

78K0/Ix2 CHAPTER 12 OPERATIONAL AMPLIFIER
R01UH0010EJ0500 Rev.5.00 407
Feb 28, 2012
Table 12-3. Setting Functions of P21/ANI1/AMPOUT/PGAIN Pin
ADPC0
Register
PM2
Register
OPAMP0E
bit
Note
PGAEN
bit
ADS Register P21/ANI1/AMPOUT/PGAIN Pin
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
Selects ANI1. Analog input (to be converted into digital signal) 0 0
Does not select ANI1. Analog input (not to be converted into digital signal)
Selects PGA output. PGA input (to be converted into digital signal) 0 1
Does not select PGA
output.
PGA input (not to be converted into digital signal)
Selects ANI1.
Operational amplifier output (to be converted into
digital signal)
1 0
Does not select ANI1.
Operational amplifier output (not to be converted into
digital signal)
Selects PGA output.
Operational amplifier output, and PGA input (to be
converted into digital signal)
Selects ANI1.
Operational amplifier output (to be converted into
digital signal)
Input mode
1 1
Does not select PGA
output and ANI1.
Operational amplifier output (not to be converted into
digital signal)
Analog
selection
Output mode
 
Setting prohibited
Note 78K0/IA2, 78K0/IB2 only
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