LH28F004SU-Z9 View Datasheet(PDF) - Sharp Electronics

Part Name

Description

Manufacturer

LH28F004SU-Z9

4M (512 × 8) Flash Memory

Sharp Electronics 

LH28F004SU-Z9

4M (512K × 8) Flash Memory

START

WRITE B0H

READ COMPATIBLE

STATUS REGISTER

CSR.7 = 0

1

CSR.6 = 0

1

WRITE FFH

ERASE COMPLETED

READ ARRAY DATA

DONE NO

READING?

YES

WRITE D0H

WRITE FFH

BUS

OPERATION

Write

Read

Standby

COMMAND

COMMENTS

Erase

Suspend

D = B0H

A=X

Q = CSRD

Toggle CE or OE

to update CSRD.

A=X

Check CSR.7

1 = WSM Ready

0 = WSM Busy

Standby

Write

Read

Array

Check CSR.6

1 = Erase Suspended

0 = Erase Completed

D = FFH

A=X

Read

Q = AD

Read must be from

block other than the

one suspended.

Write

Erase

Resume

D = D0H

A=X

See Command Bus Cycle notes for description of codes.

ERASE RESUMED

READ ARRAY DATA

Figure 6. Erase Suspend to Read Array with Compatible Status Register

28F004SU-Z9-6

10

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