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參數(shù)資料
| 型號： | M29W008ET |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | Low Noise High-Speed Precision Single Supply Operational Amplifier 8-PDIP |
| 中文描述： | 8兆（1兆× 8，引導(dǎo)塊）3V電源快閃記憶體 |
| 文件頁數(shù)： | 13/43頁 |
| 文件大?。?/td> | 282K |
| 代理商： | M29W008ET |
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M29W008ET, M29W008EB
3 Bus Operations
13/43
3.2
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 V
ID
to be applied to some
pins.
3.2.1
Read Electronic Signature
The memory has two codes, the Manufacturer code and the Device code, that can be read to
identify the memory.
These codes allow programming equipment or applications to automatically match their
interface to the characteristics of the M29W008E.
The electronic Signature is output either by applying the signals listed in
Table 2: Bus
Operations
or by issuing an Auto Select command (see
Section 4.2: Auto Select command
).
3.2.2
Block Protection and Unprotection
Each block can be individually protected against accidental Program or Erase using
programming equipment. Protected blocks can be unprotected to allow data to be changed.
There are two methods available for protecting and unprotecting the blocks, one for use on
programming equipment (Programmer Technique) and the other for in-system use (In-System
Technique). Block Protect and Chip Unprotect operations are described in
Appendix B: Block
protection
.
Table 2.
Bus Operations
Operation
E
G
W
RP
Address Inputs A0-A19
DQ0-
DQ7
Byte Read
V
IL
V
IL
V
IH
V
IH
Cell Address
Data
Output
Byte Write
V
IL
V
IH
V
IL
V
IH
Command Address
Data
Input
Output Disable
V
IL
V
IH
V
IH
V
IH
X
Hi-Z
Standby
V
IH
X
(1)
1.
X = V
IL
or V
IH
.
X
(1)
V
IH
X
Hi-Z
Read
Electronic
signature
Manufacturer Code
V
IL
V
IL
V
IH
V
IH
A0= V
IL
, A1= V
IL
, A9=V
ID
,
others address bits are ‘Don’t Care’
20h
Device
Code
M29W008ET
V
IL
V
IL
V
IH
V
IH
A0= V
IH
, A1= V
IL
, A9=V
ID
,
others address bits are ‘Don’t Care’
D2h
M29W008EB
DCh
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|---|---|
| M29W008ET70N1E | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:8 Mbit (1Mb x 8, Boot Block) 3V Supply Flash Memory |
| M29W008ET70N1F | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:8 Mbit (1Mb x 8, Boot Block) 3V Supply Flash Memory |
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| M29W008ET70N6F | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:8 Mbit (1Mb x 8, Boot Block) 3V Supply Flash Memory |
| M29W008ET90N1E | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:8 Mbit (1Mb x 8, Boot Block) 3V Supply Flash Memory |
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