LHF32KZ5 View Datasheet(PDF) - Sharp Electronics

Part Name

Description

MFG CO.

LHF32KZ5

Flash Memory 32M (× 8 or ×16)

Sharp Electronics 

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LHF32KZ5

25

Start

Write 70H

Read Status

Register

0

SR.7=

1

Write 30H

Write D0H

Read Status

Register

0

SR.7=

1

Full Status

Check if Desired

Bank Erase

Complete

Bus

Operation

Write

Command

Read Status

Register

Comments

Data=70H

Addr=X

Read

Status Register Data

Standby

Write

Write

Bank Erase

Setup

Bank Erase

Confirm

Check SR.7

1=WSM Ready

0=WSM Busy

Data=30H

Addr=X

Data=D0H

Addr=X

Read

Status Register Data

Standby

Check SR.7

1=WSM Ready

0=WSM Busy

Full status check can be done after each bank erase.

Write FFH after the last operation to place device in read array mode.

FULL STATUS CHECK PROCEDURE

Read Status Register

Data(See Above)

1

SR.3=

0

VPP Range Error

1

SR.4,5=

0

Command Sequence

Error

1

SR.5=

0

Bank Erase

Successful

Bank Erase Error

Bus

Operation

Command

Comments

Standby

Standby

Check SR.3

1=VPP Error Detect

Check SR.4,5

Both 1=Command Sequence Error

Standby

Check SR.5

1=Bank Erase Error

SR.5,SR.4,SR.3 and SR.1 are only cleared by the Clear Status

Register Command in cases where multiple blocks are erased

before full status is checked.

If error is detected, clear the Status Register before attempting

retry or other error recovery.

Figure 6. Automated Bank Erase Flowchart

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