LH28F800BJB-PTTL10 Просмотр технического описания (PDF) - Sharp Electronics

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Компоненты Описание

производитель

LH28F800BJB-PTTL10

8M (x8/x16) Flash Memory

Sharp Electronics 

LHF80J22

20

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

Full Chip Erase

Complete

Bus

Operation

Write

Command

Read Status

Register

Comments

Data=70H

Addr=X

Read

Status Register Data

Standby

Write

Write

Full Chip Erase

Setup

Full Chip 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 full chip 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

VCCW Range Error

1

SR.1=

0

SR.4,5=

1

0

Device Protect Error

Command Sequence

Error

1

SR.5=

0

Full Chip Erase

Successful

Full Chip Erase Error

Bus

Operation

Command

Comments

Standby

Standby

Standby

Standby

Check SR.3

1=VCCW Error Detect

Check SR.1

1=Device Protect Detect

(All Blocks are locked)

Check SR.4,5

Both 1=Command Sequence Error

Check SR.5

1=Full Chip 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 7. Automated Full Chip Erase Flowchart

Rev. 1.27

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