W29GL064C_13 Datasheet, PDF (31/68 Pages) Winbond – 64M-BIT 3.0-VOLT PARALLEL FLASH MEMORY WITH PAGE MODE

W29GL064C
7.6 Common Flash Memory Interface (CFI) Mode
7.6.1 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 7-19 CFI Mode: ID Data Values
Address
(Word Mode)
10h
11h
12h
13h
14h
15h
16h
17h
18h
19h
1Ah
Data
0051h
0052h
0059h
0002h
0000h
0040h
0000h
0000h
0000h
0000h
0000h
Address
(Byte Mode)
20h
22h
24h
26h
28h
2Ah
2Ch
2Eh
30h
32h
34h
Publication Release Date: August 2, 2013
25
Revision H