LH28F004SU-NC 데이터 시트보기 (PDF) - Sharp Electronics

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LH28F004SU-NC

4M (512K × 8) Flash Memory

Sharp Electronics 

4M (512K × 8) Flash Memory

LH28F004SU-NC

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

Standby

Write

Read

Write

COMMAND

COMMENTS

Erase

Suspend

Read

Array

Erase

Resume

D = B0H

A=X

Q = CSRD

Toggle CE or OE

to update CSRD.

A=X

Check CSR.7

1 = WSM Ready

0 = WSM Busy

Check CSR.6

1 = Erase Suspended

0 = Erase Completed

D = FFH

A=X

Q = AD

Read must be from

block other than the

one suspended.

D = D0H

A=X

See Command Bus Cycle notes for description of codes.

ERASE RESUMED

READ ARRAY DATA

Figure 7. Erase Suspend to Read Array with Compatible Status Register

28F004SUT-NC80-6

11

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