HD64F3437TF16 Datasheet, PDF (727/752 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.

C.7 Port 7 Block Diagrams
RP7
P7_n
A/D converter
Analog input
RP7: Read port 7
n = 0 to 5
Figure C.7 (a) Port 7 Block Diagram (Pins P7₀ to P7₅)
RP7
P7_n
A/D converter
Analog input
D/A converter
Output enable
Analog output
RP7: Read port 7
n = 6, 7
Figure C.7 (b) Port 7 Block Diagram (Pins P7₆ and P7₇)
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