HD64F3437TF16 Datasheet, PDF (730/752 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.

Reset
HIE
R
QD
P8_nDDR
C
WP8D
Reset
R
P8_n
QD
P8_nDR
C
WP8
RP8
WP8D: Write to P8DDR
WP8: Write to port 8
RP8: Read port 8
n = 2, 3
HIF
Input (CS₁, IOR)
Figure C.8 (c) Port 8 Block Diagram (Pins P8₂, P8₃)
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