38K0 Datasheet, PDF (13/133 Pages) Mitsubishi Electric Semiconductor – SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

38K0 Group
(1) Port P0
Pull-up control bit
Direction register
Data bus
Port latch
(4) Ports P30–P32
Data bus
Direction register
Port latch
VCCE
Key-on wake-up input
(2) Port P1
EXO E
External bus interface enable bit
Direction register
Data bus
Port latch
VCCE
(5) Port P33
External bus interface enable bit
Direction register
Data bus
Port latch
VCCE
EXB data output
EXB data input
Output buffer
Input buffer
A/D conversion input
Analog input pin selection bit
EXINT output
(6) Ports P34, P35, P36, P37
External bus interface enable bit
Direction register
Data bus
Port latch
VCCE
(3) Port P2
Direction register
Data bus
Port latch
EXCS(P34)
EXWR(P35)
EXRD(P36)
EXA0(P37)
External bus interface enable bit
Fig. 10 Port block diagram (1)
Rev.3.00 Oct 05, 2006 page 13 of 129
REJ03B0192-0300