参数资料
型号: M25PE40VMW6G
厂商: STMICROELECTRONICS
元件分类: PROM
英文描述: 512K X 8 SPI BUS SERIAL EEPROM, PDSO8
封装: 0.208 INCH, ROHS COMPLIANT, PLASTIC, SOP-8
文件页数: 8/62页
文件大小: 565K
代理商: M25PE40VMW6G
Operating features
M25PE40
●
The second Software Protected mode (SPM2) uses the Block Protect bits (BP2,
BP1, BP0, see Section 6.4.3)) to allow part of the memory to be configured as read-
only.
Table 2.
Software protection truth table (Sectors 0 to 7, 64-Kbyte granularity)
Sector Lock Register
Protection status
Lock
Down bit
Write
Lock bit
00
Sector unprotected from Program/Erase/Write operations, protection status
reversible
01
Sector protected from Program/Erase/Write operations, protection status
reversible
10
Sector unprotected from Program/Erase/Write operations,
sector protection status cannot be changed except by a reset or power-up.
11
Sector protected from Program/Erase/Write operations,
sector protection status cannot be changed except by a reset or power-up.
Table 3.
Protected area sizes
Status Register
content
Memory content
BP2
bit
BP1
bit
BP0
bit
Protected area
Unprotected area
0
none
All sectors(1) (eight sectors: 0 to 7)
1.
The device is ready to accept a Bulk Erase instruction if, and only if, all Block Protect bits (BP2, BP1, BP0)
are 0.
0
1
Upper eighth (sector 7)
Lower seven-eighths (seven sectors: 0 to 6)
0
1
0
Upper quarter (two sectors: 6 and
7)
Lower three-quarters (six sectors: 0 to 5)
0
1
Upper half (four sectors: 4 to 7)
Lower half (four sectors: 0 to 3)
1
0
All sectors (eight sectors: 0 to 7)
none
1
0
1
All sectors (eight sectors: 0 to 7)
none
1
0
All sectors (eight sectors: 0 to 7)
none
1
All sectors (eight sectors: 0 to 7)
none
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相关代理商/技术参数
参数描述
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