HD64F3437TF16 Datasheet, PDF (132/752 Pages) Hitachi Semiconductor – 12 V must not be applied to the S-mask model (single-power-supply specification), as this may permanently damage the device.

Port
Port 8
Port 9
Port A
Port B
Expanded
Modes
Single-Chip
Mode
Description
Pins
Mode 1
Mode 2
Mode 3
• 7-bit I/O port
• Can drive a bus
line (P8₆)
P8₆/IRQ₅/SCK₁/SCL
P8₅/IRQ₄/RxD₁/CS₂
P8₄/IRQ₃/TxD₁/IOW
• 8-bit I/O port
• Can drive a bus
line (P9₇)
P8₃/IOR
P8₂/CS₁
P8₁/GA₂₀
P8₀/HA₀
P9₇/WAIT/SDA
Serial communication interface 1 input/output (TxD₁,
RxD₁, SCK₁), HIF control input (CS₂, IOW), I²C clock
input/output (SCL), external interrupt input (IRQ₅ to
IRQ₃), or general input/output
HIF control input/output (HA₀, GA₂₀, CS₁, IOR), or
general input/output
Expanded data bus control input
(WAIT), I²C data input/output (SDA),
or general input/output
I²C data
input/output
(SDA) or
general input/
output
P9₆/ø
System clock (ø) System clock (ø)
output
output
ø output or
general input
• 8-bit I/O port
• Built-in input
pull-ups
P9₅/AS
P9₄/WR
P9₃/RD
P9₂/IRQ₀
P9₁/IRQ₁/EIOW
P9₀/IRQ₂/ECS₂/ADTRG
PA₇ to PA₀/
KEYIN₁₅ to KEYIN₈
Expanded data bus control output
(RD, WR, AS)
General
input/output
HIF control input (ECS₂, EIOW), trigger input to A/D
converter (ADTRG), external interrupt input (IRQ₂ to
IRQ₀), or general input/output
Key-sense interrupt input (KEYIN₁₅ to KEYIN₈) or
general input/output
• Key-sense
interrupt inputs
• Can drive bus
lines (PA₄, PA₅,
PA₆, PA₇)
• 8-bit I/O port
• HIF data bus
PB₇ to PB₀/
XDB7 to XDB₀
HIF data bus (XDB₇ to XDB₀) or
general input/output
General
input/output
• Built-in input
pull-up MOS
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