m58lw064d STMicroelectronics, m58lw064d Datasheet - Page 35

• Manufacturer Part Number: m58lw064d
• Description: 64 Mbit 8mb X8, 4mb X16, Uniform Block 3v Supply Flash Memory
• Manufacturer: STMicroelectronics

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-
Table 24. Query Structure Overview
Note: 1. Offset 15h defines P which points to the Primary Algorithm Extended Query Address Table.
Table 25. CFI - Query Address and Data Output
Note: 1. Query Data are always presented on DQ7-DQ0. DQ15-DQ8 are set to '0'.
001Bh
0000h
0001h
0010h
0027h
001Ah
x16
0010h
0012h
0013h
0014h
0015h
0016h
0017h
0018h
0019h
0011h
2. Offset 19h defines A which points to the Alternate Algorithm Extended Query Address Table.
3. SBA is the Start Base Address for each block.
4. In x8 mode, A0 must be set to V
2. Offset 19h defines A which points to the Alternate Algorithm Extended Query Address Table.
3. In x8 mode, A0 must be set to V
x16
(SBA+02)h
Address
P(h)
A(h)
(2)
Address
(1)
(2)
x8
00h
02h
20h
36h
4Eh
(4)
x8
2Ch
2Ah
2Eh
20h
22h
24h
26h
28h
30h
32h
34h
(3)
CFI Query Identification String
System Interface Information
Device Geometry Definition
Primary Algorithm-specific Extended
Query Table
Alternate Algorithm-specific Extended
Query Table
Block Status Register
IL
IL
51h
52h
59h
Sub-section Name
, otherwise 00h will be output.
, otherwise 00h will be output.
Data
01h
00h
31h
00h
00h
00h
00h
00h
"Q"
"R"
"Y"
Query ASCII String 52h; "R"
Primary Vendor:
Command Set and Control Interface ID Code
Primary algorithm extended Query Address Table: P(h)
Alternate Vendor:
Command Set and Control Interface ID Code
Alternate Algorithm Extended Query address Table
51h; "Q"
59h; "Y"
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 24, 25,
26, 27,
trieve the data.
Manufacturer Code
Device Code
Command set ID and algorithm data offset
Device timing and voltage information
Flash memory layout
Additional information specific to the Primary
Algorithm (optional)
Additional information specific to the Alternate
Algorithm (optional)
Block-related Information
28
and
29
Description
show the addresses used to re-
Description
M58LW064D
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