HD6412332 RENESAS [Renesas Technology Corp], HD6412332 Datasheet - Page 456

• Manufacturer Part Number: HD6412332
• Description: Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2300 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

9.16
9.16.1
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, BREQO, BREQ, and BACK) and the system clock (φ) output pin. The
AS, LWR, and BREQO output pins can be switched by means of settings in PFCR2 and SYSCR.
Figure 9.25 shows the port F pin configuration.
Rev.4.00 Sep. 07, 2007 Page 426 of 1210
REJ09B0245-0400
Port F
Overview
Port F
Port F pins
PF
PF
PF
PF
PF
PF
PF
PF
7
6
5
4
3
2
1
0
/ φ
/ AS
/ RD
/ HWR
/ LWR
/ LCAS / BREQO
/ BACK
/ BREQ
Figure 9.25 Port F Pin Functions
Pin functions in modes 4 to 6
PF
PF
RD (output)
HWR (output)
PF
PF
PF
PF
Pin functions in mode 7
PF
PF
PF
PF
PF
PF
PF
PF
7
6
3
2
1
0
7
6
5
4
3
2
1
0
(input) / φ (output)
(I/O) / AS (output)
(I/O) / LWR (output)
(I/O) / LCAS (output) / BREQO (output)
(I/O) / BACK (output)
(I/O) / BREQ (input)
(input) / φ (output)
(I/O)
(I/O)
(I/O)
(I/O)
(I/O)
(I/O)
(I/O)