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參數(shù)資料
| 型號： | M29W017D90ZA6T |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | 16 Mbit 2Mb x8, Uniform Block 3V Supply Flash Memory |
| 中文描述： | 16兆位的2Mb × 8，統(tǒng)一座3V電源快閃記憶體 |
| 文件頁數(shù)： | 28/36頁 |
| 文件大?。?/td> | 251K |
| 代理商： | M29W017D90ZA6T |
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M29W017D
28/36
APPENDIX B. COMMON FLASH INTERFACE (CFI)
The Common Flash Interface is a JEDEC ap-
proved, standardized data structure that can be
read from the Flash memory device. It allows a
system software to query the device to determine
various electrical and timing parameters, density
information and functions supported by the mem-
ory. The system can interface easily with the de-
vice, enabling the software to upgrade itself when
necessary.
When the CFI Query Command is issued the de-
vice enters CFI Query mode and the data structure
is read from the memory. Tables 17, 18, 19, 20, 21
and 22 show the addresses used to retrieve the
data.
The CFI data structure also contains a security
area where a 64 bit unique security number is writ-
ten (see Table 22, Security Code area). This area
can be accessed only in Read mode by the final
user. It is impossible to change the security num-
ber after it has been written by ST. Issue a Read/
Reset command to return to Read mode.
Table 17. Query Structure Overview
Note: Query data are always presented on the lowest order data outputs.
Table 18. CFI Query Identification String
Address
Sub-section Name
Description
10h
CFI Query Identification String
Command set ID and algorithm data offset
1Bh
System Interface Information
Device timing & voltage information
27h
Device Geometry Definition
Flash device layout
40h
Primary Algorithm-specific Extended Query
table
Additional information specific to the Primary
Algorithm (optional)
61h
Security Code Area
64 bit unique device number
Address
Data
Description
Value
10h
51h
"Q"
11h
52h
Query Unique ASCII String "QRY"
"R"
12h
59h
"Y"
13h
02h
Primary Algorithm Command Set and Control Interface ID code 16 bit ID code
defining a specific algorithm
AMD
Compatible
14h
00h
15h
40h
Address for Primary Algorithm extended Query table (see Table 20)
P = 40h
16h
00h
17h
00h
Alternate Vendor Command Set and Control Interface ID Code second vendor
- specified algorithm supported
NA
18h
00h
19h
00h
Address for Alternate Algorithm extended Query table
NA
1Ah
00h
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PDF描述 |
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| M29W017D70ZA6T | 16 Mbit 2Mb x8, Uniform Block 3V Supply Flash Memory |
| M29W017D70ZA1T | 16 Mbit 2Mb x8, Uniform Block 3V Supply Flash Memory |
| M29W022 | 2 Mbit 256Kb x8, Boot Block Low Voltage Single Supply Flash Memory |
| M29W022BT55NZ1T | 2 Mbit 256Kb x8, Boot Block Low Voltage Single Supply Flash Memory |
| M29W022BB55NZ1T | 2 Mbit 256Kb x8, Boot Block Low Voltage Single Supply Flash Memory |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M29W022 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:2 Mbit 256Kb x8, Boot Block Low Voltage Single Supply Flash Memory |
| M29W022BB | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:2 Mbit 256Kb x8, Boot Block Low Voltage Single Supply Flash Memory |
| M29W022BB55K1T | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:2 Mbit 256Kb x8, Boot Block Low Voltage Single Supply Flash Memory |
| M29W022BB55K6T | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:2 Mbit 256Kb x8, Boot Block Low Voltage Single Supply Flash Memory |
| M29W022BB55NZ1T | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:2 Mbit 256Kb x8, Boot Block Low Voltage Single Supply Flash Memory |
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