Datasheet

78K0/Ix2 CHAPTER 4 PORT FUNCTIONS
R01UH0010EJ0500 Rev.5.00 99
Feb 28, 2012
Table 4-3. Port Functions (78K0/IA2)
Function Name I/O Function After Reset Alternate Function
P00 I/O
Port 0.
1-bit I/O port.
Input/output can be specified in 1-bit units.
Use of an on-chip pull-up resistor can be specified by a
software setting.
Input port
TI000/INTP0/TOH1/
TI51
P20
ANI0/AMP
-
Note
P21
ANI1/AMPOUT
Note
/
PGAIN
Note
P22 ANI2/AMP+
Note
P23 ANI3/CMP2+
P24 ANI4/CMP0+
P25
I/O
Port 2.
6-bit I/O port.
Input/output can be specified in 1-bit units.
Analog input
ANI5/CMP1+
P31 TOX00/INTP2/TOOLC1
P32 TOX01/INTP3/TOOLD1
P33 TOX10
P34
I/O
Port 3.
4-bit I/O port.
Input/output can be specified in 1-bit units.
Use of an on-chip pull-up resistor can be specified by a
software setting.
Input port
TOX11/INTP4/TOH1/
TI51
P60 SCLA0/TxD6
P61
I/O
Port 6.
2-bit I/O port.
Input/output can be specified in 1-bit units.
Input can be set to SMBus input buffer in 1-bit units.
Output can be set to N-ch open-drain output (V
DD
tolerance).
Use of an on-chip pull-up resistor can be specified by a
software setting.
Input port
SDAA0/RxD6
P121 X1/TOOLC0/TI000/
INTP0
P122 X2/EXCLK/TOOLD0
P125
Input
Port 12.
3-bit input-only port.
For only P125, use of an on-chip pull-up resistor can be
specified by a software setting.
Input port
RESET
Note  PD78F0753, 78F0754 (products with operational amplifier) only
Remark Functions in angle brackets < > can be assigned by setting the input switch control register (MUXSEL).