Datasheet

78K0/Ix2 CHAPTER 2 PIN FUNCTIONS
R01UH0010EJ0500 Rev.5.00 17
Feb 28, 2012
2.1.1 78K0/IY2
(1) Port functions: 78K0/IY2
Function Name I/O Function After Reset Alternate Function
P20 ANI0
P21 ANI1/PGAIN
Note
P23 ANI3/CMP2+
P24 ANI4/CMP0+
P25
I/O
Port 2.
5-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
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/TI000/
INTP0
(2) Non-port functions : 78K0/IY2 (1/2)
Function Name I/O Function After Reset Alternate Function
ANI0 P20
ANI1 P21/PGAIN
Note
ANI3 P23/CMP2+
ANI4 P24/CMP0+
ANI5
Input A/D converter analog input Analog input
P25/CMP1+
CMP0+ P24/ANI4
CMP1+ P25/ANI5
CMP2+
Input Comparator input Analog input
P23/ANI3
PGAIN
Note
Input PGA (programmable gain amplifier) input Analog input P21/ANI1
Note  PD78F0750, 78F0751, 78F0752 (products with operational amplifier) only
Remark Functions in angle brackets < > can be assigned by setting the input switch control register (MUXSEL).