參數(shù)資料
型號: M58BW016BT90ZA6
廠商: STMICROELECTRONICS
元件分類: PROM
英文描述: 512K X 32 FLASH 3V PROM, 90 ns, PBGA80
封裝: 10 X 12 MM, 1 MM PITCH, LBGA-80
文件頁數(shù): 41/63頁
文件大小: 895K
代理商: M58BW016BT90ZA6
46/63
APPENDIX A. 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 25, 26,
27, 28 and 29 show the addresses used to retrieve
the data.
Table 25. Query Structure Overview
Note: 1. Offset 15h defines P which points to the Primary Algorithm Extended Query Address Table.
2. Offset 19h defines A which points to the Alternate Algorithm Extended Query Address Table.
Table 26. CFI - Query Address and Data Output
Note: 1. The x8 or Byte Address and the x16 or Word Address mode are not available.
2. Query Data are always presented on DQ7-DQ0. DQ31-DQ8 are set to '0'.
Offset
Sub-section Name
Description
00h
Manufacturer Code
01h
Device Code
10h
CFI Query Identification String
Command set ID and algorithm data offset
1Bh
System Interface Information
Device timing and voltage information
27h
Device Geometry Definition
Flash memory layout
P(h)(1)
Primary Algorithm-specific Extended Query Table
Additional information specific to the Primary
Algorithm (optional)
A(h)(2)
Alternate Algorithm-specific Extended Query Table
Additional information specific to the Alternate
Algorithm (optional)
Address A0-A18
Data
Instruction
10h
51h
"Q"
51h; "Q"
Query ASCII String
52h; "R"
59h; "Y"
11h
52h
"R"
12h
59h
"Y"
13h
03h
Primary Vendor:
Command Set and Control Interface ID Code
14h
00h
15h
35h
Primary algorithm extended Query Address Table: P(h)
16h
00h
17h
00h
Alternate Vendor:
Command Set and Control Interface ID Code
18h
00h
19h
00h
Alternate Algorithm Extended Query address Table
1Ah
00h
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