HD64F3437TF16 Datasheet, PDF (160/752 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 6 Input Pull-Up Control Register (KMPCR)
Bit
Initial value
Read/Write
7
6
5
4
3
2
1
0
KM₇PCR KM₆PCR KM₅PCR KM₄PCR KM₃PCR KM₂PCR KM₁PCR KM₀PCR
0
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
KMPCR is an 8-bit readable/writable register that controls the input pull-up transistors in port 6. If
a P6DDR bit is cleared to 0 (designating input) and the corresponding KMPCR bit is set to 1, the
input pull-up transistor is turned on.
KMPCR is initialized to H'00 by a reset and in hardware standby mode. In software standby mode
it retains its existing values.
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