LH5P1632 View Datasheet(PDF) - Sharp Electronics

Part Name

Description

Manufacturer

LH5P1632

CMOS 512K (32K × 16) Pseudo-Static RAM

Sharp Electronics 

CMOS 512K (32K × 16) Pseudo-Static RAM

LH5P1632

TRUTH TABLE

INPUT

CE UOE LOE/RFSH

H

D

D

L

L

L

L

H

L

L

L

H

L

H

H

L

D

D

L

D

H

L

H

D

L

D

L

L

L

D

H

D

NOTES:

D = Don’t care.

High-Z = High impedance.

UWR

D

H

H

H

H

L

L

H

L

H

D

LWR

D

H

H

H

H

L

H

L

H

L

D

OUTPUT

I/O9 – I/O16

I/O1 – I/O8

High-Z

High-Z

DOUT

High-Z

DOUT

High-Z

DOUT

DOUT

High-Z

High-Z

DIN

DIN

High-Z

DIN

DOUT

High-Z

DIN

High-Z

DIN

DOUT

DIN

High-Z

MODE

UPPER BYTE

LOWER BYTE

Standby

Read

Read

CE only refresh

Read

Read

CE only refresh

CE only refresh CE only refresh

Write

Write

Write

CE only refresh

CE only refresh

Write

Write

Read

Read

Write

Auto Refresh

NOTE

Inhibit

Inhibit

CE

VIH

VIL

A0 - A14

VIH

VIL

LOE/RFSH VIH

UOE

VIL

LWR VIH

UWR VIL

I/O1

-

I/O16

VOH

VOL

tRC

tP

tCE

tP

tAS

tAH

ADDRESS

INPUT

tOEH

tOEL

tOES

tRCS

tRCH

tCEA

tOEA

tOLZ

tCLZ

tCHZ

tOHZ

VALID-DATA

OUTPUT

Figure 4. Read Cycle

5P1632-3

5

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