HD6475328-CP10 Datasheet, PDF (431/459 Pages) Hitachi Semiconductor – original Hitachi CMOS microcomputer unit (MCU)

Reset
R1
QD
P77 DDR
C
WP7D
Reset
WP7D: Write to P7DDR
WP7: Write to Port 7
RP7: Read Port 7
R
P77
QD
P77 DR
C
WP7
Free-running timer module
Output enable
Output compare output
RP7
Figure C-7 (e) Schematic Diagram of Port 7, Pin P77
Table C-7 (e) Port 7 Port Read (Pin P77)
Setting
Output enable
Output disable
DDR = 0
DDR = 1
Port Read Data
Output compare output value
Pin value
DR value
422