A29L320 AMICC [AMIC Technology], A29L320 Datasheet - Page 12

• 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]

Autoselect Mode
The autoselect mode provides manufacturer and device
identification, and sector protection verification, through
identifier codes output on I/O
intended for programming equipment to automatically match
a device to be programmed with its corresponding
programming algorithm. However, the autoselect codes can
also be accessed in-system through the command register.
When using programming equipment, the autoselect mode
requires V
pins A6, A1, and A0 must be as shown in Autoselect Codes
(High Voltage Method) table. In addition, when verifying
Description
Manufacturer ID: AMIC
Device ID:
A29L320
(Top Boot Block)
Device ID:
A29L320
(Bottom Boot Block)
Continuation ID
Sector Protection Verification
L=Logic Low= V
Note: The autoselect codes may also be accessed in-system via command sequences.
PRELIMINARY
ID
(11.5V to 12.5 V) on address pin A9. Address
IL
, H=Logic High=V
(September, 2005, Version 0.0)
Mode
Word
Word
Byte
Byte
Table 4. A29L320 Autoselect Codes (High Voltage Method)
7
- I/O
CE
L
L
L
L
L
IH
0
, SA=Sector Address, X=Don’t Care.
. This mode is primarily
OE
L
L
L
L
L
WE
H
H
H
H
H
A20
A12
SA
to
X
X
X
X
A10
A11
11
to
X
X
X
X
X
sector protection, the sector address must appear on the
appropriate highest order address bits. Refer to the
corresponding Sector Address Tables. The Command
Definitions table shows the remaining address bits that are
don't care. When all necessary bits have been set as
required, the programming equipment may then read the
corresponding identifier code on I/O
autoselect codes in-system, the host system can issue the
autoselect command via the command register, as shown in
the Command Definitions table. This method does not
require V
the autoselect mode.
V
V
V
V
V
A9
ID
ID
ID
ID
ID
A8
A7
to
X
X
X
X
X
ID
. See "Command Definitions" for details on using
A6
L
L
L
L
L
A5
A2
to
X
X
X
X
X
A1
H
H
L
L
L
AMIC Technology, Corp.
A0
H
H
H
L
L
A29L320 Series
I/O
7
I/O
22h
22h
to
X
X
X
X
X
X
- I/O
15
8
0
.To access the
(unprotected)
(protected)
I/O
I/O
37h
F6h
F6h
F9h
F9h
7Fh
01h
00h
to
7
0