參數(shù)資料
型號: Am29PDL128G90
廠商: Spansion Inc.
英文描述: 128 Megabit (8 M x 16-Bit/4 M x 32-Bit) CMOS 3.0 Volt-only, Simultaneous Read/ Write Flash Memory with VersatileIO Control
中文描述: 128兆位(8米× 16位/ 4米× 32位),3.0伏的CMOS只,同步讀/寫閃存與VersatileIO控制記憶
文件頁數(shù): 31/69頁
文件大?。?/td> 1181K
代理商: AM29PDL128G90
30
Am29PDL128G
July 29, 2002
P R E L I M I N A R Y
COMMON FLASH MEMORY INTERFACE
(CFI)
The Common Flash Interface (CFI) specification out-
lines device and host system software interrogation
handshake, which allows specific vendor-specified
software algorithms to be used for entire families of
devices. Software support can then be device-inde-
pendent, JEDEC ID-independent, and forward- and
backward-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 sys-
tem writes the CFI Query command, 98h, to address
55h in word mode (or address AAh in byte mode), any
time the device is ready to read array data. The
system can read CFI information at the addresses
given in Tables
10
13
. To terminate reading CFI data,
the system must write the reset command. The CFI
Query mode is not accessible when the device is exe-
cuting an Embedded Program or embedded Erase al-
gorithm.
The system can also write the CFI query command
when the device is in the autoselect mode. The device
enters the CFI query mode, and the system can read
CFI data at the addresses given in Tables
10
13
. The
system must write the reset command to return the de-
vice to reading array data.
For further information, please refer to the CFI Specifi-
cation and CFI Publication 100, available via the
World Wide Web at http://www.amd.com/prod-
ucts/nvd/overview/cfi.html. Alternatively, contact an
AMD representative for copies of these documents.
Table 10.
CFI Query Identification String
Addresses
(Double Word
Mode)
Addresses
(Word Mode)
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
0000h
Alternate OEM Command Set (00h = none exists)
19h
1Ah
32h
34h
0000h
0000h
Address for Alternate OEM Extended Table (00h = none exists)
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