LH28F800BJHE-PBTL90 Ver la hoja de datos (PDF) - Sharp Electronics

Número de pieza

componentes Descripción

Fabricante

LH28F800BJHE-PBTL90

8M (x8/x16) Flash Memory

Sharp Electronics 

LHF80J05

26

Start

Write 70H

Read Status

Register

0

SR.7=

1

Write C0H

Write Data and Address

Read

Status Register

0

SR.7=

1

Full Status

Check if Desired

OTP Program

Complete

FULL STATUS CHECK PROCEDURE

Read Status Register

Data(See Above)

1

SR.3=

0

1

SR.1=

0

1

SR.4=

0

OTP Program Successful

VCCW Range Error

Device Protect Error

OTP Program Error

Bus

Operation

Write

Read

Standby

Write

Write

Command

Comments

Read Status

Register

Data=70H

Addr=X

Status Register Data

Setup OTP Program

OTP Program

Check SR.7

1=WSM Ready

0=WSM Busy

Data=C0H

Addr=X

Data=Data to Be Written

Addr=Location to Be Written

Read

Status Register Data

Standby

Check SR.7

1=WSM Ready

0=WSM Busy

Repeat for subsequent OTP programs.

SR full status check can be done after each OTP program, or after a sequence of

OTP programs.

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

Bus

Operation

Command

Comments

Standby

Standby

Check SR.3

1=VCCW Error Detect

Check SR.1

1=Device Protect Detect

Standby

Check SR.4

1=Data Write Error

SR.4, SR.3 and SR.1 are only cleared by the Clear Status Register command in cases

where multiple locations are written before full status is checked.

If error is detected, clear the Status Register before attempting retry or other error recovery.

Figure 13. Automated OTP Program Flowchart

Rev. 1.27

Share Link: