M58BW016BT100T3(2003) View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

M58BW016BT100T3
(Rev.:2003)

16 Mbit (512Kb x32, Boot Block, Burst) 3V Supply Flash Memories

STMicroelectronics 

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-

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

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)

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

Address A0-A18

Data

Instruction

10h

51h

"Q"

51h; "Q"

11h

52h

"R" Query ASCII String

52h; "R"

12h

59h

"Y"

59h; "Y"

13h

03h

Primary Vendor:

14h

00h

Command Set and Control Interface ID Code

15h

35h

Primary algorithm extended Query Address Table: P(h)

16h

00h

17h

00h

Alternate Vendor:

18h

00h

Command Set and Control Interface ID Code

19h

00h

Alternate Algorithm Extended Query address Table

1Ah

00h

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'.

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