參數(shù)資料
型號(hào)： M29W320DB7AN6
廠商： NUMONYX
元件分類： PROM
英文描述： 2M X 16 FLASH 3V PROM, 70 ns, PDSO48
封裝： 12 X 20 MM, PLASTIC, TSOP-48
文件頁(yè)數(shù)： 39/56頁(yè)
文件大?。?/td> 1125K
代理商： M29W320DB7AN6
Common Flash Interface (CFI)
M29W320DT, M29W320DB
44/56
Appendix B
Common Flash Interface (CFI)
The Common Flash Interface is a JEDEC approved, 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 memory. The system can interface easily with the device, enabling the
software to upgrade itself when necessary.
When the CFI Query Command is issued the device enters CFI Query mode and the data
structure is read from the memory. Table 21, Table 22, Table 23, Table 24, Table 25 and
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 written (see Table 26, Security
Code area). This area can be accessed only in Read mode by the final user. It is impossible
to change the security number after it has been written by Numonyx. Issue a Read
command to return to Read mode.
Table 21.
Query Structure Overview(1)
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
1. Query data are always presented on the lowest order data outputs.
Table 22.
CFI Query Identification String(1)
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 24)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
1. Query data are always presented on the lowest order data outputs (DQ7-DQ0) only. DQ8-DQ15 are ‘0’.
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參數(shù)描述
M29W320DB7AN6E 制造商:Micron Technology Inc 功能描述:AUTOMOTIVE - Trays 制造商:Micron Technology Inc 功能描述:IC FLASH 32MBIT 70NS 48TSOP
M29W320DB7AN6F 制造商:Micron Technology Inc 功能描述:AUTOMOTIVE - Tape and Reel
M29W320DB7AN6F TR 制造商:Micron Technology Inc 功能描述:IC FLASH 32MBIT 70NS 48TSOP
M29W320DB7AZA3F 制造商:Micron Technology Inc 功能描述:AUTOMOTIVE - Tape and Reel
M29W320DB7AZA6E 制造商:Micron Technology Inc 功能描述:32MB 2MX16 NOR FLASH PLASTIC IND TEMP BOTTOM PBF TFBGA 3.0V - Trays 制造商:Micron Technology Inc 功能描述:IC FLASH 32MBIT 70NS 63TFBGA
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