m58bw32f STMicroelectronics, m58bw32f Datasheet - Page 78

• Manufacturer Part Number: m58bw32f
• Description: 16 Or 32 Mbit X32, Boot Block, Burst 3.3v Supply Flash Memories
• Manufacturer: STMicroelectronics

Common Flash interface (CFI)
Appendix B
78/87
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 CFI Query command (RCFI) is issued the device enters CFI Query mode and the
data structure is read from the memory.
show the addresses used to retrieve the data.
Table 28.
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.
Offset
P(h)
A(h)
1Bh
00h
01h
10h
27h
(1)
(2)
0020h
883A
8839
8838
8837
CFI query identification string
System interface information
Device geometry definition
Primary algorithm-specific extended query
table
Alternate algorithm-specific extended query
table
Common Flash interface (CFI)
Query structure overview
Sub-section name
Table
28,
Table
Manufacturer code ST
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)
29,
Table
30,
Description
M58BW16F, M58BW32F
Table 33
M58BW16FT (top)
M58BW16FB (bottom)
M58BW32FT (top)
M58BW32FB (bottom)
and
Table 32