M16C30L Datasheet, PDF (139/166 Pages) Renesas Technology Corp – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

Programmable I/O Port
Mitsubishi microcomputers
M16C / 30L Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
P82 to P84
Data bus
Pull-up selection
Direction register
Port latch
(Note1)
Input to respective peripheral functions
P76, P77, P80, P81,
P90, P93, P94
(inside dotted-line not included)
P55, P62, P66, P75,
P91, P92, P97
(inside dotted-line included)
Data bus
Pull-up selection
Direction register
Port latch
P63, P67
Input to respective peripheral functions
(Note 2)
Data bus
Pull-up selection
Direction register
"1"
Port latch
Output
(Note1)
(Note1)
P85
Data bus
NMI interrupt input
(Note1)
Note 1:
symbolizes a parasitic diode.
Do not apply a voltage higher than Vcc to each port.
Note 2: In a part of port, the input to a respective peripheral functions
does not exist, but schmitt circuit exists.
Figure 1.20.2. Programmable I/O ports (2)
138