參數(shù)資料
型號： M29DW640F70N6F
廠商： STMICROELECTRONICS
元件分類： PROM
英文描述： 4M X 16 FLASH 3V PROM, 70 ns, PDSO48
封裝： 12 X 20 MM, LEAD FREE, PLASTIC, TSOP-48
文件頁數(shù)： 10/74頁
文件大小： 556K
代理商： M29DW640F70N6F
Bus operations
M29DW640F
3.5
Automatic Standby
If CMOS levels (VCC ± 0.2V) are used to drive the bus and the bus is inactive for 300ns or
more the memory enters Automatic Standby where the internal Supply Current is reduced to
the Standby Supply Current, ICC2. The Data Inputs/Outputs will still output data if a Bus
Read operation is in progress.
3.6
Special bus operations
Additional bus operations can be performed to read the Electronic Signature and also to
apply and remove Block Protection. These bus operations are intended for use by
programming equipment and are not usually used in applications. They require VID to be
applied to some pins.
3.6.1
Electronic Signature
The memory has two codes, the manufacturer code and the device code, that can be read
to identify the memory. These codes can be read by applying the signals listed in Table 4
and Table 5, Bus operations.
3.6.2
Block Protect and Chip Unprotect
Groups of blocks can be protected against accidental Program or Erase. The Protection
Groups are shown in Appendix A, Table 24: Block addresses The whole chip can be
unprotected to allow the data inside the blocks to be changed.
The VPP/Write Protect pin can be used to protect the four outermost boot blocks. When
VPP/Write Protect is at VIL the four outermost boot blocks are protected and remain
protected regardless of the Block Protection Status or the Reset/Block Temporary
Unprotect pin status.
Block Protect and Chip Unprotect operations are described in Appendix D.
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PDF描述
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
M29DW640F70N6T 制造商:NUMONYX 制造商全稱:Numonyx B.V 功能描述:64 Mbit (8Mb x8 or 4Mb x16, Multiple Bank, Page, Boot Block) 3V Supply Flash Memory
M29DW640F70ZE1 制造商:NUMONYX 制造商全稱:Numonyx B.V 功能描述:64 Mbit (8Mb x8 or 4Mb x16, Multiple Bank, Page, Boot Block) 3V Supply Flash Memory
M29DW640F70ZE1E 制造商:NUMONYX 制造商全稱:Numonyx B.V 功能描述:64 Mbit (8Mb x8 or 4Mb x16, Multiple Bank, Page, Boot Block) 3V Supply Flash Memory
M29DW640F70ZE1F 制造商:NUMONYX 制造商全稱:Numonyx B.V 功能描述:64 Mbit (8Mb x8 or 4Mb x16, Multiple Bank, Page, Boot Block) 3V Supply Flash Memory
M29DW640F70ZE1T 制造商:NUMONYX 制造商全稱:Numonyx B.V 功能描述:64 Mbit (8Mb x8 or 4Mb x16, Multiple Bank, Page, Boot Block) 3V Supply Flash Memory
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