參數(shù)資料
型號(hào)： M30L0R8000T0
廠商： 意法半導(dǎo)體
英文描述： 256 Mbit (16Mb x16, Multiple Bank, Multi-Level, Burst) 1.8V Supply Flash Memory
中文描述： 256兆位（16Mb的x16插槽，多銀行，多層次，多突發(fā)）1.8V電源快閃記憶體
文件頁(yè)數(shù)： 60/83頁(yè)
文件大小： 1363K
代理商： M30L0R8000T0
M30L0R8000T0, M30L0R8000B0
60/83
APPENDIX B. COMMON FLASH INTERFACE
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 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 ad-
dresses used to retrieve the data. The Query data
is always presented on the lowest order data out-
puts (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 writ-
ten (see
Figure 5., 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.
Table 36. Query Structure Overview
Offset
000h
Reserved
010h
CFI Query Identification String
01Bh
System Interface Information
027h
Device Geometry Definition
Note: 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 37. CFI Query Identification String
Offset
Sub-section Name
000h
0020h
880Dh
880Eh
002h
Reserved
003h-00Fh
Reserved
010h
0051h
011h
0052h
012h
0059h
013h
0001h
014h
0000h
015h
offset = P = 000Ah
016h
0001h
017h
0000h
018h
0000h
019h
value = A = 0000h
01Ah
0000h
Sub-section Name
Description
Reserved for algorithm-specific information
Command set ID and algorithm data offset
Device timing & voltage information
Flash device layout
Additional information specific to the Primary
Algorithm (optional)
Additional information specific to the Alternate
Algorithm (optional)
Lock Protection Register
Unique device Number and
User Programmable OTP
P
Primary Algorithm-specific Extended Query table
A
Alternate Algorithm-specific Extended Query table
080h
Security Code Area
Description
Value
ST
Top
Bottom
Manufacturer Code
001h
Device Code
Reserved
Reserved
Query Unique ASCII String "QRY"
"Q"
"R"
"Y"
Primary Algorithm Command Set and Control Interface ID code 16 bit
ID code defining a specific algorithm
Address for Primary Algorithm extended Query table (see
Table 40.
)
P = 10Ah
Alternate Vendor Command Set and Control Interface ID Code
second vendor - specified algorithm supported
NA
Address for Alternate Algorithm extended Query table
NA
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