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M25PE80-VMN6P 参数 Datasheet PDF下载

M25PE80-VMN6P图片预览
型号: M25PE80-VMN6P
PDF下载: 下载PDF文件 查看货源
内容描述: 8兆位,页擦除串行闪存与字节变性, 75兆赫的SPI总线,标准引脚 [8-Mbit, page-erasable serial flash memory with byte alterability, 75 MHz SPI bus, standard pinout]
分类和应用: 闪存内存集成电路
文件页数/大小: 66 页 / 1387 K
品牌: NUMONYX [ NUMONYX B.V ]
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Instructions  
M25PE80  
(1)  
Table 13. Not for new design: lock registers for the M25PE80 in T7Y process  
Sector  
Bit  
Value  
b7-b2  
b1  
‘0’  
All sectors in T9HX process  
Sector lock down bit value (refer to Table 11)  
Sector write lock bit value (refer to Table 11)  
All sectors except for sector 0  
and sector 15 in T7Y process  
b0  
Only b3 and b2 are taken into account to modify  
the subsector write lock and lock down bits(2)  
‘1’  
‘0’  
b7  
Only b1 and b0 are taken into account to modify  
the sector write lock and lock down bits(3)  
Sector 0, sector 15 in T7Y  
process  
b3  
b2  
b1  
b0  
Subsector lock down bit value (refer to Table 11)  
Subsector write lock bit value (refer to Table 11)  
Sector lock down bit value (refer to Table 11)  
Sector write lock bit value (refer to Table 11)  
1. The table rows in gray are true for products processed in the T7Y process only.  
2. b6-b4 and b1-b0 must be reset to ‘0’.  
3. b6-b2 must be reset to ‘0’.  
For products processed in the T7Y process only (see Important note on  
page 6):  
Protection always prevails:  
When the lock down bit of sector 0 or sector 15 is set to ‘1’.  
If the lock down bit of sector 0 is ‘1’, all the lock down bits of the subsectors in  
sector 0 are forced to ‘1’.  
If the lock down bit of sector 15 is ‘1’, all the lock down bits of the subsectors in  
sector 15 are forced to ‘1’  
When the write lock bit of sector 0 or sector 15 is set to ‘1’.  
if the write lock bit of sector 0 is ‘1’, the write lock bits of all the subsectors in sector  
0 are forced to ‘1’ (even if their lock down bits are set to ‘1’).  
if the write lock bit of sector 15 is ‘1’, the write lock bits of all the subsectors in  
sector 15 are forced to ‘1’ (even if their lock down bits are set to ‘1’).  
When the write lock bit of sector 0 or sector 15 is reset to ‘0’.  
if the write lock bit of sector 0 is ‘0’, all the subsectors in sector 0 whose lock down  
bit is ‘0’ have their write lock bits forced to ‘0’.  
if the write lock bit of sector 15 is ‘0’, all the subsectors in sector 15 whose lock  
down bit is ‘0’ have their write lock bits forced to ‘0’.  
When the write lock bit of any sector or subsector is set to ‘1’, any instruction that may  
modify the contents of this sector or subsector will be rejected (including sector erase  
and bulk erase).  
Note that when the WRLR instruction acts both on write lock (WL) and lock down (LD) bits,  
it firstly programs the WL bit, and then the LD bit.  
As an example, if a subsector lock register settings are xxxx0101b and a WRLR instruction  
is issued with a lock register in data set to 00000010b:  
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