HD6432351 Datasheet, PDF (336/989 Pages) Renesas Technology Corp – The H8S/2000 CPU has an internal 32-bit architecture, is provided with sixteen 16-bit general registers and a concise

Table 9-1 Port Functions (cont)
Port Description Pins
Mode 1 Mode 2*¹ Mode 3*¹ Mode 4 Mode 5 Mode 6*¹ Mode 7*¹
Port A • 8-bit I/O
port
PA₇/A₂₃/
IRQ7
• Built-in
PA₆/A₂₂/
MOS input IRQ6
pull-up*¹ PA₅/A₂₁/
• Open-drain IRQ5
output
capability*¹
• Schmitt-
triggered
input (PA₄
to PA₇)
PA₄/A₂₀/
IRQ4
Dual function as I/O ports and
interrupt input pins (IRQ7 to
IRQ4)
When DDR = 0 (after When Dual
reset): dual function DDR = 0 function
as input ports and (after as I/O
interrupt input pins reset): ports and
(IRQ7 to IRQ5)
dual
interrupt
When DDR = 1:
address output
function input pins
as input (IRQ7 to
ports and IRQ4)
interrupt
input pins
(IRQ7 to
IRQ4)
Address output
When
DDR = 1:
address
output
PA₃/A₁₉ to
PA₀/A₁₆
I/O ports
Address output
When
DDR = 0
(after
reset):
input
ports
I/O ports
When
DDR = 1:
address
output
Port B • 8-bit I/O
port*¹
PB₇/A₁₅ to
PB₀/A₈
• Built-in
MOS input
pull-up*¹
Address
output
When I/O port
DDR = 0
(after
reset):
input port
When
DDR = 1:
address
output
Address output
When I/O port
DDR = 0
(after
reset):
input port
When
DDR = 1:
address
output
Port C • 8-bit I/O
port*¹
PC₇/A₇ to
PC₀/A₀
• Built-in
MOS input
pull-up*¹
Address
output
When I/O port
DDR = 0
(after
reset):
input port
When
DDR = 1:
address
output
Address output
When I/O port
DDR = 0
(after
reset):
input port
When
DDR = 1:
address
output
Note: 1. Only applies to the H8S/2351.
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