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| 型號： | AM29BDD160GT54DKK |
| 廠商： | ADVANCED MICRO DEVICES INC |
| 元件分類： | PROM |
| 英文描述： | 16 Megabit (1 M x 16-bit/512 K x 32-Bit), CMOS 2.5 Volt-only Burst Mode, Dual Boot, Simultaneous Read/Write Flash Memory |
| 中文描述： | 512K X 32 FLASH 2.7V PROM, 54 ns, PQFP80 |
| 封裝： | LEAD FREE, PLASTIC, QFP-80 |
| 文件頁數(shù)： | 26/80頁 |
| 文件大?。?/td> | 3476K |
| 代理商： | AM29BDD160GT54DKK |
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30
Am29BDD160G
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
system writes the CFI Query command, 98h, to ad-
dress 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 ad-
dresses given in Tables 13–16. 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 autoselect mode. The de-
vice enters the CFI query mode, and the system can
read CFI data at the addresses given in Tables 13–
16. The system must write the reset command to re-
turn the device to the autoselect mode.
For further information, please refer to the CFI Spec-
ification and CFI Publication 100, available via the
World Wid e Web at http://www.amd.com/products/
nvd/overview/cfi.html. Alternatively, contact an AMD
representative for copies of these documents.
Table 14. CFI Query Identification String
(Addresses
x32 Mode)
Addresses
(x16 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
Alternate OEM Command Set (00h = none exists)
19h
1Ah
32h
34h
0000h
Address for Alternate OEM Extended Table (00h = none exists)
Table 15. CFI System Interface String (Sheet 1 of 2)
Addresses
(x32 Mode)
Addresses
(x16 Mode)
Data
Description
1Bh
36h
0023h
VCC Min. (write/erase) DQ7–DQ4: volts, DQ3–DQ0: 100 millivolt
1Ch
38h
0027h
VCC Max. (write/erase) DQ7–DQ4: volts, DQ3–DQ0: 100 millivolt
1Dh
3Ah
0000h
VPP Min. voltage (00h = no VPP pin present)
1Eh
3Ch
0000h
VPP Max. voltage (00h = no VPP pin present)
1Fh
3Eh
0004h
Typical time out per single word/doubleword program 2N s
20h
40h
0000h
Typical time out for Min. size buffer program 2N s (00h = not
supported)
21h
42h
0009h
Typical time out per individual block erase 2N ms
22h
44h
0000h
Typical time out for full chip erase 2N ms (00h = not supported)
23h
46h
0005h
Max. time out for word/doubleword program 2N times typical
24h
48h
0000h
Max. time out for buffer write 2N times typical
25h
4Ah
0007h
Max. time out per individual block erase 2N times typical
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