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HD64F3437TF16 Datasheet, PDF (738/752 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.
Hardware standby
Modes 1 or 2 Reset
SR
QD
P96DDR
C*
WP9D
P96
ø
RP9
WP9D: Write to P9DDR
RP9: Read port 9
Note: * Set priority
Figure C.9 (e) Port 9 Block Diagram (Pin P96)
709