HD6412320 RENESAS [Renesas Technology Corp], HD6412320 Datasheet - Page 458

• Manufacturer Part Number: HD6412320
• Description: Renesas 16-Bit Single-Chip Microcomputer H8S Family H8S-2300 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 9 I/O Ports
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 (φ) output
pin. The AS, LWR, and BREQO output pins can be switched by means of settings in PFCR2 and
SYSCR.
Figure 9.22 shows the port F pin configuration.
Note: * LCAS is not supported in the H8S/2321.
Rev.6.00 Sep. 27, 2007 Page 428 of 1268
REJ09B0220-0600
Note: * LCAS is not supported in the H8S/2321.
Port F
Port F
Overview
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 * / WAIT / BREQO
/ BACK
/ BREQ
Figure 9.22 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) / WAIT (input) / 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)