参数资料
型号: S29GL032A90TAIR31
厂商: Spansion Inc.
英文描述: 64 MEGABIT 32MEGABIT 3.0 BOLT ONLY PAGE MODE FLASH MEMORY
中文描述: 64兆位32MEGABIT 3.0螺栓只页面模式闪存
文件页数: 36/88页
文件大小: 1425K
代理商: S29GL032A90TAIR31
January 28, 2005 S29GLxxxA_00_A2
S29GLxxxA MirrorBit Flash Family
39
Advance
Information
Common Flash Memory Interface (CFI)
The Common Flash Interface (CFI) specification outlines device and host system
software interrogation handshake, which allows specific vendor-specified soft-
ware algorithms to be used for entire families of devices. Software support can
then be device-independent, JEDEC ID-independent, and forward- and back-
ward-compatible for the specified flash device families. Flash vendors can
standardize their existing interfaces for long-term compatibility.
This device enters the CFI Query mode when the system writes the CFI Query
command, 98h, to address 55h, any time the device is ready to read array data.
The system can read CFI information at the addresses given in Table 21-Table 24.
To terminate reading CFI data, the system must write the reset command.
The system can also write the CFI query command when the device is in the au-
toselect mode. The device enters the CFI query mode, and the system can read
CFI data at the addresses given in Table 21-Table 24. The system must write the
reset command to return the device to reading array data.
For further information, please refer to the CFI Specification and CFI Publication
100. Alternatively, contact your sales representative for copies of these
documents.
Table 21. CFI Query Identification String
Addresses
(x16)
Addresses
(x8)
Data
Description
10h
11h
12h
20h
22h
24h
0051h
0052h
0059h
Query Unique ASCII string “QRY”
13h
14h
26h
28h
0002h
0000h
Primary OEM Command Set
15h
16h
2Ah
2Ch
0040h
0000h
Address for Primary Extended Table
17h
18h
2Eh
30h
0000h
Alternate OEM Command Set (00h = none exists)
19h
1Ah
32h
34h
0000h
Address for Alternate OEM Extended Table (00h = none exists)
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