M38203M4 Datasheet, PDF (92/344 Pages) Mitsubishi Electric Semiconductor – 8-BIT SINGLE-CHIP MICROCOMPUTER

APPLICATION
2.1 I/O pins
PULL register A
b7 b6 b5 b4 b3 b2 b1 b0
PULL register A (PULLA) [Address 1616]
B
Name
0 ^{P00–P07 pull-down}
Functions
0 : No pull-down
1 : Pull-down
At reset R W
1
1 P10–P17 pull-down
0 : No pull-down
1
1 : Pull-down
2 P20–P27 pull-up
0 : No pull-up
0
1 : Pull-up
3 ^{P30–P37 pull-down}
4 P70, P71 pull-up
0 : No pull-down
1
1 : Pull-down
0 : No pull-up
0
1 : Pull-up
5 Nothing is allocated. These bits cannot be written 0 0 ×
to to and are fixed to “0” at reading.
7
Note: For ports set for the output mode, pull-up or pull-down is
impossible.
Fig. 2.1.5 Structure of PULL register A
PULL register B
b7 b6 b5 b4 b3 b2 b1 b0
PULL register B (PULLB) [Address 1716]
B
Name
0 P41-P43 pull-up
Functions
0 : No pull-up
1 : Pull-up
At reset R _W
0
1 P44-P47 pull-up
2 P50-P53 pull-up
3 P54-P57 pull-up
0 : No pull-up
0
1 : Pull-up
0 : No pull-up
0
1 : Pull-up
0 : No pull-up
0
1 : Pull-up
4 P60, P61 pull-up
0 : No pull-up
1 : Pull-up
5 Nothing is allocated. These bits cannot be written
to to and are fixed to “0” at reading.
7
0
0 0^×
Note: For ports set for the output mode, pull-up is impossible.
Fig. 2.1.6 Structure of PULL register B
2–6
3820 GROUP USER’S MANUAL