W29GL256PL9T-TR Datasheet, PDF (31/64 Pages) Winbond – 256M-BIT 3.0-VOLT PARALLEL FLASH MEMORY WITH PAGE MODE

W29GL256P
6.6 Common Flash Memory Interface (CFI) Mode
6.6.1 Query Instruction and Common Flash memory Interface (CFI) Mode
Through Common Flash Interface (CFI) operations it is possible to access the operating characteristics,
structure and vendor specific information, such as identifying information, memory size, byte/word
configuration, operating voltages and timing information of this device. From the Read array mode
writing CFI Read instruction 98h to the address "55h"/"AAh" (Word/Byte, respectively), the device will
gain access to the CFI Query Mode. Once in the CFI mode data can be read using the addresses given
in Table 7-19 thru 7-22.
A reset instruction must be executed to exit CFI mode and the device will return to read array mode.
CFI mode: Identification Data Values (All Values in these tables are hexadecimal)
Description
Query-unique ASII string “QRY”
Primary vendor instruction set and control interface ID
code
Address for primary algorithm extended query table
Alternate vendor instruction set and control interface ID
code
Address for alternate algorithm extended query table
Table 6-19 CFI Mode: ID Data Values
Address Address
(Word Mode) (Byte Mode)
10h
20h
11h
22h
12h
24h
13h
26h
14h
28h
15h
2Ah
16h
2Ch
17h
2Eh
18h
30h
19h
32h
1Ah
34h
Data
0051h
0052h
0059h
0006h
0000h
0040h
0000h
0000h
0000h
0000h
0000h
Publication Release Date: Jul 02, 2014
26
Revision A