A29L320 AMICC [AMIC Technology], A29L320 Datasheet - Page 15

• Manufacturer Part Number: A29L320
• Description: 4M X 8 Bit / 2M X 16 Bit CMOS 3.3 Volt-only, Boot Sector Flash Memory
• Manufacturer: AMICC [AMIC Technology]

Common Flash Memory Interface (CFI)
The Common Flash Interface (CFI) specification outlines
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-independent, JEDEC ID-independent, and
forward- and backward-compatible for the specified flash
device families. Flash vendors can standardize their existing
interface for long-term compatibility.
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
PRELIMINARY
(Word Mode)
(Word Mode)
Addresses
Addresses
1Ah
1Bh
1Ch
1Dh
1Eh
10h
11h
12h
13h
14h
15h
16h
17h
18h
19h
1Fh
20h
21h
22h
23h
24h
25h
26h
(September, 2005, Version 0.0)
(Byte Mode)
(Byte Mode)
Addresses
Addresses
2Ah
2Ch
2Eh
3Ah
3Ch
3Eh
4Ah
4Ch
20h
22h
24h
26h
28h
30h
32h
34h
36h
38h
40h
42h
44h
46h
48h
000Ah
0051h
0052h
0059h
0002h
0000h
0040h
0000h
0000h
0000h
0000h
0000h
0027h
0036h
0000h
0000h
0004h
0000h
0000h
0005h
0000h
0004h
0000h
Data
Data
Table 5. CFI Query Identification String
Table 6 System Interface String
Query Unique ASCII string “QRY”
Primary OEM Command Set
Address for Primary Extended Table
Alternate OEM Command Set (00h = none exists)
Address for Alternate OEM Extended Table (00h = none exists)
VCC Min. (write/erase)
I/O
VCC Max. (write/erase)
I/O
Vpp Min. voltage (00h = no Vpp pin present)
Vpp Max. voltage (00h = no Vpp pin present)
Typical timeout per single byte/word write 2
Typical timeout for Min. size buffer write 2
Typical timeout per individual block erase 2
Typical timeout for full chip erase 2
Max. timeout for byte/word write 2
Max. timeout for buffer write 2
Max. timeout per individual block erase 2
Max. timeout for full chip erase 2
7
7
-
-
I/O
I/O
4
4
: volt, I
: volt, I
14
/O
/O
device is ready to read array data. The system can read CFI
information at the addresses given in Table 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 Table 5-8. The system must write the
reset command to return the device to the autoselect mode.
3
3
-
-
I/O
I/O
0
: 100 millivolt
0
: 100 millivolt
N
times typical
Description
Description
N
N
times typical (00h = not supported)
N
times typical
ms (00h = not supported)
N
N
AMIC Technology, Corp.
times typical
N
N
µs (00h = not supported)
ms
µs
A29L320 Series