UPD78P324LP datasheet(64/80 Pages) NEC

64 / 80 page

µPD78P324, 78P324(A)

PROM Write Mode Timing

Cautions

1. Ensure to apply VDDP before VPP, and disconnect it after VPP.

2. Ensure that VPP does not exceed +13.5 V even when the overshoot is included.

3. Taking out or putting in while +12.5 V is applied to VPP may cause adverse effects on the reliability.

PROM Read Mode Timing

Notes 1. To read within the range of tACC, please make sure that the delay time from CE’s falling edge of the

OE input is up to tACC-tOE.

2. tDF refers to the time when either OE or CE became VIH first.

A0-A16

D0-D7

VPP

VDDP

VDDP + 1.5

VDDP

VIH

VIL

VIH

VIL

VIH

VIL

VPP

VDDP

PGM

Hi-Z

Program

Program verify

tDS

tAS

tVPS

tVDS

tCES

Data output

Data input

Hi-Z

tAH

Hi-Z

tDH

tDF

tPW

tOES

tOE

Note 1

tOE

Note 2

A0-A16

D0-D7

Vailed address

Hi-Z

tACC

Data output

Hi-Z

tOH

tDF

Note 1

UPD78P324LP Datasheet(PDF) 64 Page - NEC

UPD78P324LP Datasheet(HTML) 64 Page - NEC

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