HD64F3437TF16 Datasheet, PDF(737/752 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 (737/752 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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Hardware standby

Modes 1 or 2

Reset

R

QD

P9nDDR

C

Mode 3

WP9D

Reset

P9n

Modes 1 or 2

R

QD

P9nDR

C

WP9

RD output

WR output

AS output

RP9

WP9D: Write to P9DDR

WP9: Write to port 9

RP9: Read port 9

n = 3, 4, 5

Figure C.9 (d) Port 9 Block Diagram (Pins P93, P94, P95)

708

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