HD6412340 HITACHI [Hitachi Semiconductor], HD6412340 Datasheet - Page 223

• Manufacturer Part Number: HD6412340
• Description: H8S/2345 F-ZTAT Hardware Manual
• Manufacturer: HITACHI [Hitachi Semiconductor]

Table 8.1
Port E
Port F
206
Port Description
8-bit I/O
port
Built-in
MOS input
pull-up
8-bit I/O
port
Schmitt-
triggered
input (IRQ3
to IRQ0)
Port Functions (cont)
PE
PE
PF
PF
PF
PF
PF
IRQ3
PF
IRQ2
PF
IRQ1
PF
IRQ0
7
6
5
4
3
2
1
0
7
0
/ø
/AS
/RD
/HWR
/LWR/
/WAIT/
/BACK/
/BREQ/
/D
/D
Pins
7
0
to
In 8-bit bus mode:
I/O port
In 16-bit bus mode:
data bus input/output
When DDR = 0:
input port
When DDR = 1 (after
reset): ø output
AS, RD, HWR, LWR
output
When WAITE = 0
(after reset): I/O port
also functioning as
interrupt input pin
(IRQ2)
When WAITE = 1:
WAIT input also
functioning as
interrupt input pin
(IRQ2)
When BRLE = 0
(after reset): I/O port
also functioning as
interrupt input pins
(IRQ1, IRQ0)
When BRLE = 1:
BREQ input, BACK
output also
functioning as
interrupt input pins
(IRQ1, IRQ0)
Mode
1 *
1
Mode
2 *
1,
*
2
I/O port
When
DDR = 0
(after
reset):
input port
When
DDR = 1:
ø output
I/O port
I/O port
also func-
tioning as
interrupt
input pins
(IRQ3 to
IRQ0)
Mode
3 *
1,
*
2
In 8-bit bus mode: I/O port
In 16-bit bus mode: data bus
input/output
When DDR = 0: input port
When DDR = 1 (after reset):
ø output
AS, RD, HWR, LWR output
When WAITE = 0 (after reset):
I/O port also functioning as
interrupt input pin (IRQ2)
When WAITE = 1: WAIT input
also functioning as interrupt
input pin (IRQ2)
When BRLE = 0 (after reset):
I/O port also functioning as
interrupt input pins (IRQ1,
IRQ0)
When BRLE = 1: BREQ input,
BACK output also functioning
as interrupt input pins (IRQ1,
IRQ0)
Mode
4
Mode
5
Mode
6 *
2
I/O port
When
DDR = 0
(after
reset):
input port
When
DDR = 1:
ø output
I/O port
I/O port
also func-
tioning as
interrupt
input pins
(IRQ3 to
IRQ0)
Mode
7 *
2