AT49BV160D 데이터 시트보기 (PDF) - Atmel Corporation

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AT49BV160D

16-megabit (1M x 16) 3-volt Only Flash Memory

Atmel Corporation 

5. Word Program Flowchart

Start

Write 40,

Any Address

(Setup)

Write Data, (Confirm)

Word Address

Read-Status

Register

SR7 =

0

1

Full Status

Check

(If Desired)

No

Suspend?

Program

Suspend

Loop

Ye s

Program

Complete

7. Full Status Check Flowchart

Read Status

Register

SR3 =

1

0

SR4 =

1

0

SR1 =

1

0

Program

Successful

VPP Range

Error

Program

Error

Device

Protect Error

6. Word Program Procedure

Bus

Operation Command Comments

Write

Program

Setup

Data = 40

Addr = Any Address

Write

Data

Data = Data to program

Addr = Location to program

Read

None

Status register data: Toggle CE

or

OE to update status register

Check SR7

Idle

None

1 = WSM Ready

0 = WSM Busy

Repeat for subsequent Word Program operations.

Full status register check can be done after each program, or

after a sequence of program operations.

Write FF after the last operation to set to the Read state.

8. Full Status Check Procedure

Bus

Operation Command Comments

Idle

None

Check SR3:

1 = VPP Error

Idle

None

Check SR4:

1 = Data Program Error

Check SR1:

Idle

None

1 = Sector locked; operation

aborted

SR3 MUST be cleared before the Write State Machine allows

further program attempts.

If an error is detected, clear the status register before

continuing operations – only the Clear Status Register

command clears the status register error bits.

10 AT49BV160D(T)

3591C–FLASH–6/06

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