HD6432345 Datasheet, PDF (223/907 Pages) Hitachi Semiconductor – H8S/2345 F-ZTAT Hardware Manual

Table 8.1 Port Functions (cont)
Port Description Pins
Port E • 8-bit I/O
port
PE₇/D₇ to
PE₀/D₀
• Built-in
MOS input
pull-up
Port F • 8-bit I/O
port
PF₇/ø
• Schmitt-
triggered
input (IRQ3
to IRQ0)
PF₆/AS
PF₅/RD
PF₄/HWR
PF₃/LWR/
IRQ3
PF₂/WAIT/
IRQ2
PF₁/BACK/
IRQ1
PF₀/BREQ/
IRQ0
Mode
1*¹
Mode
2*^1, *²
Mode
3*^1, *²
In 8-bit bus mode: I/O port
I/O port
In 16-bit bus mode:
data bus input/output
Mode
4
Mode
5
Mode
6*²
In 8-bit bus mode: I/O port
In 16-bit bus mode: data bus
input/output
When DDR = 0:
When When DDR = 0: input port
input port
DDR = 0 _{When DDR = 1 (after reset):}
When DDR = 1 (after ^(after
ø output
reset): ø output
reset):
input port
When
DDR = 1:
ø output
AS, RD, HWR, LWR I/O port AS, RD, HWR, LWR output
output
I/O port
also func-
When WAITE = 0 ^{tioning as} When WAITE = 0 (after reset):
(after reset): I/O port ^interrupt I/O port also functioning as
also functioning as
interrupt input pin
(IRQ2)
input pins
(IRQ3 to
interrupt input pin (IRQ2)
IRQ0)
When WAITE = 1:
WAIT input 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 = 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)
When BRLE = 1: BREQ input,
BACK output also functioning
as interrupt input pins (IRQ1,
IRQ0)
Mode
7*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)
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