HD6412320 RENESAS [Renesas Technology Corp], HD6412320 Datasheet - Page 465

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

Pin
PF
9.14
9.14.1
Port G is a 5-bit I/O port. Port G pins also function as bus control signal output pins (CS
and CAS * ). Enabling or disabling of CS
Figure 9.23 shows the port G pin configuration.
Note: * CAS is not supported in the H8S/2321.
Note: * CAS is not supported in the H8S/2321.
0
/BREQ
Port G
Port G
Overview
The pin function is switched as shown below according to the combination of
the operating mode, and bits BRLE and PF0DDR.
Selection Method and Pin Functions
Port G pins
PG
PG
PG
PG
PG
Operating
Mode
BRLE
PF0DDR
Pin function
4
3
2
1
0
/ CS
/ CS
/ CS
/ CS
/ CAS *
0
1
2
3
Figure 9.23 Port G Pin Functions
input pin
Pin functions in modes 4 to 6
PG
PG
PG
PG
PG
1
PF
to CS
4
3
2
1
0
0
(input) / CS
(I/O) / CS
(I/O) / CS
(I/O) / CS
(I/O) / CAS * (output)
0
3
0
Modes 4 to 6
output can be changed by a setting in PFCR2.
output pin
1
2
3
(output)
(output)
(output)
PF
0
1
(output)
Rev.6.00 Sep. 27, 2007 Page 435 of 1268
0
input pin
BREQ
—
1
Pin functions in mode 7
PG
PG
PG
PG
PG
input pin
4
3
2
1
0
PF
(I/O)
(I/O)
(I/O)
(I/O)
(I/O)
Section 9 I/O Ports
0
REJ09B0220-0600
0
Mode 7
—
output pin
0
to CS
PF
1
0
3
,