HD6412350 Hitachi, HD6412350 Datasheet - Page 405

• Manufacturer Part Number: HD6412350
• Description: (HD6412350 / HD6432351) 16-BIT MICROCONTROLLER
• Manufacturer: Hitachi

9.13
9.13.1
Port F is an 8-bit I/O port. Port F pins also function as bus control signal input/output pins (AS,
RD, HWR, LWR, LCAS, WAIT, BREQO, BREQ, and BACK) and the system clock (ø) output
pin.
Figure 9-25 shows the port F pin configuration.
Pin functions in modes 3 and 7*
PF
PF
PF
PF
PF
PF
PF
PF
Note: * Modes 2, 3, 6, and 7 only apply to the H8S/2351.
Port F
7
6
5
4
3
2
1
0
(input)/
(I/O)
(I/O)
(I/O)
(I/O)
(I/O)
(I/O)
(I/O)
Port F
Overview
ø (output)
Port F pins
PF
PF
PF
PF
PF
PF
PF
PF
7
6
5
4
3
2
1
0
/ ø
/ AS
/ RD
/ HWR
/ LWR
/ LCAS/ WAIT / BREQO
/ BACK
/ BREQ
Figure 9-25 Port F Pin Functions
Pin functions in modes 1 and 2*
PF
AS
RD
HWR
LWR
PF
PF
PF
Pin functions in modes 4 to 6*
PF
AS
RD
HWR
LWR
PF
PF
PF
7
2
1
0
7
2
1
0
(input) /
(output)
(output)
(I/O)/
(I/O)/
(I/O)/
(input) /
(output)
(output)
(I/O)/ LCAS
(I/O)/ BACK (output)
(I/O)/ BREQ
(output)
(output)
(output)
(output)
WAIT
BACK
BREQ
ø (output)
ø
(output)
(input)
(output)
(input)
(output) / WAIT (input) / BREQO (output)
(input)
/BREQO (output)
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