HD6475328-CP10 Datasheet, PDF (425/459 Pages) Hitachi Semiconductor – original Hitachi CMOS microcomputer unit (MCU)

C.5 Schematic Diagram of Port 5
Figure C-5 gives a schematic view of the port 5 input/output circuits.
MOS
pull-up
P5n
Mode 1, 2, 3, or 4
Software standby
Bus release
Mode 1 or 3
Reset
Mode 7
SR
QD
P5 n DDR
C
WP5D
Reset
R
QD
P5 n DR
C
Mode 1, 2, 3, or 4
WP5
WP5D: Write to P5DDR
WP5: Write to Port 5
RP5: Read Port 5
n:
0 to 7
RP5
Figure C-5 Schematic Diagram of Port 5
Table C-5 Port 5 Port Read
Mode
1,3
2,4,7
DDR = 0
DDR = 1
Port Read Data
DR value
Pin value
DR value
416