M58BW016BB ST Microelectronics, M58BW016BB Datasheet - Page 46

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M58BW016BB

Manufacturer Part Number
M58BW016BB
Description
16 Mbit 512Kb x32 / Boot Block / Burst 3V Supply Flash Memories
Manufacturer
ST Microelectronics
Datasheet

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M58BW016BT, M58BW016BB, M58BW016DT, M58BW016DB
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-
Table 25. Query Structure Overview
Note: 1. Offset 15h defines P which points to the Primary 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.
46/63
Offset
P(h)
A(h)
1Bh
00h
01h
10h
27h
2. Offset 19h defines A which points to the Alternate Algorithm Extended Query Address Table.
2. Query Data are always presented on DQ7-DQ0. DQ31-DQ8 are set to '0'.
(1)
(2)
Address A0-A18
CFI Query Identification String
System Interface Information
Device Geometry Definition
Primary Algorithm-specific Extended Query Table
Alternate Algorithm-specific Extended Query Table
1Ah
10h
11h
12h
13h
14h
15h
16h
17h
18h
19h
Sub-section Name
51h
52h
59h
Data
03h
00h
35h
00h
00h
00h
00h
00h
"Q"
"R"
"Y"
Query ASCII String
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
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.
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)
Instruction
51h; "Q"
52h; "R"
59h; "Y"
Description

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