參數資料
型號： M30L0T8000B0ZAQE
廠商： STMICROELECTRONICS
元件分類： PROM
英文描述： 16M X 16 FLASH 1.8V PROM, 85 ns, PBGA88
封裝： 8 X 10 MM, 0.80 MM PITCH, LEAD FREE, BGA-88
文件頁數： 78/103頁
文件大?。?/td> 794K
代理商： M30L0T8000B0ZAQE
Common Flash Interface
M30L0T8000T0, M30L0T8000B0
Appendix B
Common Flash Interface
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 Read CFI Query Command is issued the device enters CFI Query mode and the
data structure is read from the memory. Tables 36, 37, 38, 39, 40, 41, 42, 43, 44 and 45
show the addresses used to retrieve the data. The Query data is always presented on the
lowest order data outputs (DQ0-DQ7), the other outputs (DQ8-DQ15) are set to 0.
The CFI data structure also contains a security area where a 64 bit unique security number
is written (see Figure 4: Protection Register Memory Map). 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 ST. Issue a Read Array command to return to Read mode.
1.
The Flash memory display the CFI data structure when CFI Query command is issued. In this table are
listed the main sub-sections detailed in Tables 37, 38, 39 and 40. Query data is always presented on the
lowest order data outputs.
Table 36.
Query Structure Overview
Offset
Sub-section Name
Description
000h
Reserved
Reserved for algorithm-specific information
010h
CFI Query Identification String
Command set ID and algorithm data offset
01Bh
System Interface Information
Device timing & voltage information
027h
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)
080h
Security Code Area
Lock Protection Register
Unique device Number and
User Programmable OTP
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