HD64F3437TF16 Datasheet, PDF(162/752 Page) Hitachi Semiconductor – 12 V must not be applied to the S-mask model (single-power-supply specification), as this may permanently damage the device.

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HD64F3437TF16 Datasheet, PDF (162/752 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.

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Pin

P63/FTIB/

KEYIN3

P62/FTIA/

KEYIN2

P61/FTOA/

KEYIN1

P60/FTCI/

KEYIN0

Pin Functions and Selection Method

P63DDR

Pin function

0

1

P63 input

P63 output

FTIB input or KEYIN3 input

P62DDR

Pin function

0

1

P62 input

P62 output

FTIA input or KEYIN2 input

Bit OEA in TOCR of the FRT and bit P61DDR select the pin function as follows

OEA

0

1

P61DDR

Pin function

0

P61 input

1

0

1

P61 output

FTOA output

KEYIN1 input

P60DDR

0

1

Pin function

P60 input

P60 output

FTCI input* or KEYIN0 input

Note: * FTCI input is usable when bits CKS1 to CKS0 in TCR of the FRT select

an external clock source

133

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