AS29LV400B-90BC 参数 Datasheet PDF下载

型号：	AS29LV400B-90BC
PDF下载：	下载PDF文件查看货源
内容描述：	[Flash, 256KX16, 90ns, PBGA48, 6 X 8 MM, 1.20 MM HEIGHT, BGA-48]
分类和应用：	内存集成电路
文件页数/大小：	27 页 / 282 K
品牌：	ALSC [ ALLIANCE SEMICONDUCTOR CORPORATION ]

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START

PLSCNT = 1

RESET# = V

Wait 1 µs

Protect all sectors:

The shaded portion of

the sector protct

First Write

Cycle=60h?

Temporary sector

unprotect mode

First Write

Cycle=60h?

Temporary sector

unprotect mode

algorithm must be

Yes

Set up sector

Yes

initiated for all

unprotected sectors

before calling the

sector unprotect

address

All sectors

protected?

Sector protect:

write 60h to sector

address with

A6=0, A1=1,

A0=0

Yes

Sector unprotect:

write 60h to sector

address with

A6=1, A1=1,

A0=0

Wait 150 µs

Verify sector

protect; write 40h

to sector address

with A6=0,

Wait 15 ms

Increment

PLSCNT

Set up first

sector address

A1=1, A0=0

Verify sector

unprotect; write 40h

to sector address

with A6=1,

Read from sector

address with A6=0,

A1=1, A0=0

Increment

PLSCNT

A1=1, A0=0

Read from sector

address with A6=1,

A1=1, A0=0

Data=01h?

Yes

PLSCNT=25?

Set up next

Yes

sector address

Protect

another

sector?

Yes

PLSCNT

=1000?

Data=00h?

Yes

Device failed

Yes

Remove V

from RESET#

Last sector

verified?

Device failed

Write reset

command

Yes

Remove V

Sector protect

complete

from RESET#

Write reset

command

Sector unprotect

complete

8/ 9/ 01; V.0.9.9.1

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