M16C6S_09 Datasheet, PDF (138/208 Pages) Renesas Technology Corp – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

M16C/6S Group
P40, P42, P56
Direction register
Data bus
Port latch
Programmable I/O Ports
IT800
P53, P54
Direction register
Data bus
Port latch
P15
Pull-up selection
IT800
Data bus
Port P1 control register
Port latch
(Note 1)
P60, P64, P73, P74, P76, P80,
P81, P90, P92
Input to respective peripheral functions
Pull-up selection
Direction register
"1"
Data bus
Port latch
Output
(Note 1)
Input to respective peripheral functions
Figure 1.18.1. I/O Ports (1)
Rev.5.01 Dec 10, 2009 page 138 of 201
REJ03B0014-0501
Note 1:
symbolizes a parasitic diode.
Make sure the input voltage on each port will not exceed Vcc.