HD6475328-CP10 HITACHI [Hitachi Semiconductor], HD6475328-CP10 Datasheet - Page 433

• Manufacturer Part Number: HD6475328-CP10
• Description: original Hitachi CMOS microcomputer unit (MCU)
• Manufacturer: HITACHI [Hitachi Semiconductor]

C.9 Schematic Diagram of Port 9
Figure C-9 (a) to (e) gives a schematic view of the port 9 input/output circuits.
Table C-9 (a) Port 9 Port Read (Pins P9
Setting
Output enable
Output disable
P9
n
Figure C-9 (a) Schematic Diagram of Port 9, Pins P9
DDR = 0
DDR = 1
Port Read Data
Output compare output value
Pin value
DR value
0
, P9
RP9
424
1
)
Q
P9 DDR
Q
P9 DR
WP9D
WP9
n
Reset
Reset
C
C
n
R
R
D
D
Free-running timer module
Output enable
Output compare output
0
WP9D:
WP9:
RP9:
n:
and P9
Write to P9DDR
Write to Port 9
Read Port 9
0 or 1
1