EN29LV320A
This device enters the CFI Query mode when the system 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 5-8.In word mode, the upper
address bits (A7–MSB) must be all zeros. 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
device enters the CFI query mode and the system can read CFI data at the addresses given in
Tables 5–8. The system must write the reset command to return the device to the autoselect mode.
Table 5. CFI Query Identification String
Addresses
Adresses
(Word Mode) (Byte Mode)
Data
Description
10h
11h
12h
13h
14h
15h
16h
17h
18h
19h
1Ah
20h
22h
24h
26h
28h
2Ah
2Ch
2Eh
30h
32h
34h
0051h
0052h Query Unique ASCII string “QRY”
0059h
0002h
0000h
0040h
Primary OEM Command Set
Address for Primary Extended Table
0000h
0000h
0000h
0000h
Alternate OEM Command set (00h = none exists)
Address for Alternate OEM Extended Table (00h = none exists)
0000h
Table 6. System Interface String
Addresses
Addresses
(Word Mode) (Byte Mode)
Data
Description
0027h Vcc Min (write/erase)
DQ7-DQ4: volt, DQ3 –DQ0: 100 millivolt
0036h Vcc Max (write/erase)
DQ7-DQ4: volt, DQ3 –DQ0: 100 millivolt
0000h Vpp Min. voltage (00h = no Vpp pin present)
0000h Vpp Max. voltage (00h = no Vpp pin present)
1Bh
1Ch
36h
38h
1Dh
1Eh
1Fh
20h
21h
22h
23h
24h
25h
26h
3Ah
3Ch
3Eh
40h
42h
44h
46h
48h
4Ah
4Ch
Typical timeout per single byte/word write 2N μS
0004h
0000h
Typical timeout for Min, size buffer write 2N μS (00h = not supported)
000Ah Typical timeout per individual block erase 2N ms
0000h Typical timeout for full chip erase 2N ms (00h = not supported)
0005h Max. timeout for byte/word write 2N times typical
0000h Max. timeout for buffer write 2N times typical
0004h Max. timeout per individual block erase 2N times typical
0000h Max timeout for full chip erase 2N times typical (00h = not supported)
Table 7. Device Geometry Definition
Addresses
(Word mode)
27h
Addresses
(Byte Mode)
4Eh
Data
0016h
0002h
0000h
Description
Device Size = 2N bytes
28h
29h
50h
52h
Flash Device Interface description (refer to CFI publication 100)
This Data Sheet may be revised by subsequent versions
or modifications due to changes in technical specifications.
©2004 Eon Silicon Solution, Inc., www.essi.com.tw
16
Rev. B, Issue Date: 2007/07/17
EON [ EON SILICON SOLUTION INC. ]
