参数资料
型号: W19B320BTT7H
厂商: Winbond Electronics
文件页数: 31/51页
文件大小: 0K
描述: IC FLASH 32MBIT 70NS 48TSOP
标准包装: 96
格式 - 存储器: 闪存
存储器类型: FLASH
存储容量: 32M(4M x 8,2M x 16)
速度: 70ns
接口: 并联
电源电压: 2.7 V ~ 3.6 V
工作温度: -20°C ~ 85°C
封装/外壳: 48-TFSOP(0.724",18.40mm 宽)
供应商设备封装: 48-TSOP
包装: 托盘
其它名称: W19B320BTT-H
W19B320BTT-H-ND
W19B320BT/B DATASHEET
7.7
In-System Sector Protect/Unprotect Algorithms
START
START
PLSCNT=1
#RESET=VID
Wait 1 μ s
Protect all sectors
The indicated portion
of the sector protect
algorithm must be
performed for all
unprotected sectors
prior to issuing the
first sector
unprotect address
PLSCNT=1
#RESET=V ID
Wait 1 μ s
Temporary Sector
Unprotect Mode
No
First Write
Cycle=60h?
First Write
Cycle=60h?
No
Temporary Sector
Unprotect Mode
Yes
Set up sector
address
Sector Protect:
Write 60h to sector
address with
A6=0,A1=1,A0=0
Wait 150 μ s
Verity Sector
No
Yes
All sectors
protected ?
Yes
Set up first sector
address
Sector Unprotect:
Write 60h to any
address with
A6=1,A1=1,A0=0
Increment
PLSCNT
Protect:Write 40h
to sector address
with A6=0,
A1=1,A0=0
Reset
PLSCNT=1
Increment
Wait 15 mS
PLSCNT
Verity Sector
No
PLSCNT
=25?
No
Read from
sector address
with A6=0,
A1=1,A0=0
Data=01h?
Unprotect:Write 40h
to sector address
with A6=1,
A1=1,A0=0
Read from
sector address
with A6=1,
A1=1,A0=0
Device failed
Yes
Yes
Protect another
sector?
Yes
No
PLSCNT
=1000?
No
Data=00h?
Set up
next sector
address
No
Yes
Yes
Sector Protect
Algorithm
Remove V ID
from #RESET
Write reset
command
Sector Protect
complete
Device failed
Sector Unprotect
Algorithm
Last sector
verified
Yes
Remove V ID
from #RESET
No
Write reset
command
Sector Unprotect
complete
Publication Release Date:Dec, 22, 2008
- 31 -
Revisionv A5
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