HD6435348R Hitachi Semiconductor, HD6435348R Datasheet - Page 458

• Manufacturer Part Number: HD6435348R
• Description: Single-Chip Microcomputer
• Manufacturer: Hitachi Semiconductor

C.6 Schematic Diagram of Port 6
Figure C-6 gives a schematic view of the port 6 input/output circuits.
Table C-6 (a) Port 6 Port Read (Pin P6
Mode
3
1, 2, 4, 7 IRQ
P6
0
MOS
pull-up
IRQ
2
2
E = 0
E = 1
Figure C-6 (a) Schematic Diagram of Port 6, Pin P6
Mode 3 or 4
DDR = 0
DDR = 1
Mode 1, 2, or 7
Port Read Data
DR value
Pin value
DR value
Pin value
Falling edge
detector
0
)
Bus release
Software
standby
Mode 3
RP6
Mode 4
448
Mode 3 or 4
Q
Q
P6 DDR
Mode 3
WP6D
P6 DR
S
WP6
0
C
C
Reset
Reset
0
R
R
D
D
IRQ to CPU
2
0
WP6D:
WP6:
RP6:
System control
register 2, Bit 3
Q
IRQ E
Write to P6DDR
Write to Port 6
Read Port 6
2