參數(shù)資料
型號(hào)： M29DW324DT90ZA6F
廠商： STMICROELECTRONICS
元件分類(lèi)： PROM
英文描述： 2M X 16 FLASH 3V PROM, 90 ns, PBGA63
封裝： 7 X 11 MM, 0.80 MM PITCH, LEAD FREE, TFBGA-63
文件頁(yè)數(shù)： 35/50頁(yè)
文件大?。?/td> 878K
代理商： M29DW324DT90ZA6F
M29DW324DT, M29DW324DB
40/50
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 24, 25, 26, 27, 28
and 29 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 29., 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.
Table 24. Query Structure Overview
Note: Query data are always presented on the lowest order data outputs.
Table 25. CFI Query Identification String
Note: Query data are always presented on the lowest order data outputs (DQ7-DQ0) only. DQ8-DQ15 are ‘0’.
Address
Sub-section Name
Description
x16
x8
10h
20h
CFI Query Identification String
Command set ID and algorithm data offset
1Bh
36h
System Interface Information
Device timing & voltage information
27h
4Eh
Device Geometry Definition
Flash device layout
40h
80h
Primary Algorithm-specific Extended
Query table
Additional information specific to the Primary
Algorithm (optional)
61h
C2h
Security Code Area
64 bit unique device number
Address
Data
Description
Value
x16
x8
10h
20h
0051h
“Q”
11h
22h
0052h
Query Unique ASCII String "QRY"
"R"
12h
24h
0059h
"Y"
13h
26h
0002h
Primary Algorithm Command Set and Control Interface ID code 16 bit
ID code defining a specific algorithm
AMD
Compatible
14h
28h
0000h
15h
2Ah
0040h
Address for Primary Algorithm extended Query table (see Table 28.)
P = 40h
16h
2Ch
0000h
17h
2Eh
0000h
Alternate Vendor Command Set and Control Interface ID Code second
vendor - specified algorithm supported
NA
18h
30h
0000h
19h
32h
0000h
Address for Alternate Algorithm extended Query table
NA
1Ah
34h
0000h
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
M29DW324DT90ZA6T 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:32 Mbit 4Mb x8 or 2Mb x16, Dual Bank 16:16, Boot Block 3V Supply Flash Memory
M29DW324DT90ZE1 制造商:NUMONYX 制造商全稱(chēng):Numonyx B.V 功能描述:32 Mbit (4Mb x8 or 2Mb x16, Dual Bank 16:16, Boot Block) 3V Supply Flash Memory
M29DW324DT90ZE1E 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:32 Mbit 4Mb x8 or 2Mb x16, Dual Bank 16:16, Boot Block 3V Supply Flash Memory
M29DW324DT90ZE1F 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:32 Mbit 4Mb x8 or 2Mb x16, Dual Bank 16:16, Boot Block 3V Supply Flash Memory
M29DW324DT90ZE1T 制造商:NUMONYX 制造商全稱(chēng):Numonyx B.V 功能描述:32 Mbit (4Mb x8 or 2Mb x16, Dual Bank 16:16, Boot Block) 3V Supply Flash Memory
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