Datasheet

78K0/Kx2-L CHAPTER 12 A/D CONVERTER
R01UH0028EJ0400 Rev.4.00 418
Sep 27, 2010
When using P10/ANI8/AMP1-, P11/ANI9/AMP1OUT, or P12/ANI10/AMP1+ in the 78K0/KB2-L and 78K0/KC2-L, set
the registers according to the pin function to be used (refer to Tables 12-3 and 12-4).
Table 12-3. Setting Functions of P10/ANI8/AMP1-, P12/ANI10/AMP1+ Pins
ADPC1 Register PM1 Register OPAMP1E bit
ADS Register
(n = 8, 10)
P10/ANI8/AMP1-,
P12/ANI10/AMP1+ Pins
Selects ANIn.
Analog input (to be converted into
digital signals)
0
Does not select ANIn.
Analog input (not to be converted
into digital signals)
Selects ANIn. Setting prohibited
Input mode
1
Does not select ANIn. Operational amplifier 1 input
Analog input
selection
Output mode
− −
Setting prohibited
Selects ANIn. Setting prohibited Input mode
−
Does not select ANIn. Digital input
Selects ANIn. Setting prohibited
Digital I/O
selection
Output mode
−
Does not select ANIn. Digital output
Table 12-4. Setting Functions of P11/ANI9/AMP1OUT Pin
ADPC1 Register PM1 Register OPAMP1E bit ADS Register P11/ANI9/AMP1OUT Pin
Selects ANI9.
Analog input (to be converted into
digital signals)
0
Does not select ANI9.
Analog input (not to be converted
into digital signals)
Selects ANI9.
Operational amplifier 1 output (to
be converted into digital signals)
Input mode
1
Does not select ANI9.
Operational amplifier 1 output (not
to be converted into digital signals)
Analog I/O
selection
Output mode
− −
Setting prohibited
Selects ANI9. Setting prohibited 0
Does not select ANI9. Digital input
Input mode
1
−
Setting prohibited
Selects ANI9. Setting prohibited 0
Does not select ANI9. Digital output
Digital I/O
selection
Output mode
1
−
Setting prohibited
Remark ADPC1: A/D port configuration register 1
PM1: Port mode register 1
OPAMP1E: Bit 7 of operational amplifier 1 control register (AMP1M)
ADS: Analog input channel specification register