收藏本站
参数资料
型号： M28W640ECT70ZB6T
厂商： STMICROELECTRONICS
元件分类： PROM
英文描述： 4M X 16 FLASH 3V PROM, 70 ns, PBGA48
封装： 6.39 X 10.50 MM, 0.75 MM PITCH, TFBGA-48
文件页数： 32/54页
文件大小： 957K
代理商： M28W640ECT70ZB6T
M28W640ECT, M28W640ECB
38/54
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 (RCFI) is issued
the device enters CFI Query mode and the data
structure is read from the memory. Tables 26, 27,
28, 29, 30 and 31 show the addresses used to re-
trieve the data.
The CFI data structure also contains a security
area where a 64 bit unique security number is writ-
ten (see Table 31, 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
command to return to Read mode.
Table 26. Query Structure Overview
Note: Query data are always presented on the lowest order data outputs.
Table 27. CFI Query Identification String
Note: Query data are always presented on the lowest order data outputs (DQ7-DQ0) only. DQ8-DQ15 are ‘0’.
Offset
Sub-section Name
Description
00h
Reserved
Reserved for algorithm-specific information
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
P
Primary Algorithm-specific Extended Query table
Additional information specific to the Primary
Algorithm (optional)
A
Alternate Algorithm-specific Extended Query table
Additional information specific to the Alternate
Algorithm (optional)
Offset
Data
Description
Value
00h
0020h
Manufacturer Code
ST
01h
8848h
8849h
Device Code
Top
Bottom
02h-0Fh
reserved
Reserved
10h
0051h
"Q"
11h
0052h
Query Unique ASCII String "QRY"
"R"
12h
0059h
"Y"
13h
0003h
Primary Algorithm Command Set and Control Interface ID code 16 bit ID code
defining a specific algorithm
Intel
compatible
14h
0000h
15h
0035h
Address for Primary Algorithm extended Query table (see Table 29)
P = 35h
16h
0000h
17h
0000h
Alternate Vendor Command Set and Control Interface ID Code second vendor -
specified algorithm supported (0000h means none exists)
NA
18h
0000h
19h
0000h
Address for Alternate Algorithm extended Query table
(0000h means none exists)
NA
1Ah
0000h
相关PDF资料
PDF描述
M28W640ECT85N1 4M X 16 FLASH 3V PROM, 85 ns, PDSO48
M28W640ECT85ZB1T 4M X 16 FLASH 3V PROM, 85 ns, PBGA48
M28W640ECT70ZB1E 4M X 16 FLASH 3V PROM, 70 ns, PBGA48
M28W640ECT85N1E 4M X 16 FLASH 3V PROM, 85 ns, PDSO48
M29W040B70N1E 4 Mbit 512Kb x8, Uniform Block Low Voltage Single Supply Flash Memory
相关代理商/技术参数
参数描述
M28W640FCB70N6 制造商:STMicroelectronics 功能描述:
M28W640FCB70N6E 功能描述:闪存 STD FLASH 64 MEG RoHS:否 制造商:ON Semiconductor 数据总线宽度:1 bit 存储类型:Flash 存储容量:2 MB 结构:256 K x 8 定时类型: 接口类型:SPI 访问时间: 电源电压-最大:3.6 V 电源电压-最小:2.3 V 最大工作电流:15 mA 工作温度:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体: 封装:Reel
M28W640FCB70N6F 功能描述:闪存 STD FLASH 64 MEG RoHS:否 制造商:ON Semiconductor 数据总线宽度:1 bit 存储类型:Flash 存储容量:2 MB 结构:256 K x 8 定时类型: 接口类型:SPI 访问时间: 电源电压-最大:3.6 V 电源电压-最小:2.3 V 最大工作电流:15 mA 工作温度:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体: 封装:Reel
M28W640FCB70ZB6E 功能描述:闪存 STD FLASH 64 MEG RoHS:否 制造商:ON Semiconductor 数据总线宽度:1 bit 存储类型:Flash 存储容量:2 MB 结构:256 K x 8 定时类型: 接口类型:SPI 访问时间: 电源电压-最大:3.6 V 电源电压-最小:2.3 V 最大工作电流:15 mA 工作温度:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体: 封装:Reel
M28W640FCB70ZB6F 功能描述:闪存 STD FLASH 64 MEG RoHS:否 制造商:ON Semiconductor 数据总线宽度:1 bit 存储类型:Flash 存储容量:2 MB 结构:256 K x 8 定时类型: 接口类型:SPI 访问时间: 电源电压-最大:3.6 V 电源电压-最小:2.3 V 最大工作电流:15 mA 工作温度:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体: 封装:Reel
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*