Datasheet

M16C/6S Group Programmable I/O Ports
R01DS0201EJ0502 Rev.5.02 page 138 of 203
Dec 25, 2012
Figure 1.18.1. I/O Ports (1)
P40, P42, P56
P53, P54
P15
P60, P64, P73, P74, P76, P80,
P8
1, P90, P92
Data bus
Direction register
IT800
Port latch
Data bus Port latch
IT800
Input to respective peripheral functions
Port P1 control register
Data bus Port latch
Pull-up selection
(Note 1)
Pull-up selection
Data bus Port latch
Output
"1"
Input to respective peripheral functions
(Note 1)
Direction register
Direction register
Note 1: symbolizes a parasitic diode.
Make sure the input voltage on each port will not exceed Vcc.