M16C Datasheet, PDF (185/262 Pages) Mitsubishi Electric Semiconductor – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

Preliminary Specifications REV.B
Specifications in this manual are tentative and subject to change.
Mitsubishi microcomputers
M16C / 6N Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Programmable I/O Port
P82 to P84
Data bus
Pull-up selection
Direction register
Port latch
Input to respective peripheral functions
P55, P62, P66, P77,
P97
Data bus
Pull-up selection
Direction register
Port latch
Input to respective peripheral functions
P63, P67
Data bus
Pull-up selection
Direction register
"1"
Port latch
Output
Nch
Note 1: P63 and P67 can be N-channel open drain only when used as
TXD0/TXD1 pin.
P70
Data bus
Pull-up selection
Direction register
"1"
Port latch
Output
Nch
Input to respective peripheral functions
Note 2: P70 can be N-channel open drain only when used as TXD2 pin. If used as
input port it is only usable as CMOS port.
P85
Data bus
NMI interrupt input
P71, P91
Direction register
"1"
Port latch
Output
(Note 3)
Input to respective peripheral functions
Note 3:
symbolizes a parasitic diode.
Figure 19-2. Programmable I/O ports (2)
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