A29002 AMIC Technology, A29002 Datasheet - Page 6

• Manufacturer Part Number: A29002
• Description: 256K X 8 Bit CMOS 5.0 Volt-only/ Boot Sector Flash Memory
• Manufacturer: 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 AO must be as shown in Autoselect
Note: CE
(February, 2002, Version 1.0)
Verification
Manufacturer ID: AMIC
Device ID: A29002/
Sector Protection
Continuation ID
Sector
Sector
SA0
SA1
SA2
SA3
SA4
SA5
SA6
SA0
SA1
SA2
SA3
SA4
SA5
SA6
Description
ID
=V
A290021
(11.5V to 12.5 V) on address pinA9. Address
IL
,
A17
A17
OE
0
0
1
1
1
1
1
0
0
0
0
0
1
1
=V
Table 3. A29002/A290021 Bottom Boot Block Sector Address Table
Table 4. A29002/A290021 Autoselect Codes (High Voltage Method)
IL
and
Table 2. A29002/A290021 Top Boot Block Sector Address Table
A17 - A13 A12 - A10
A16
A16
Address
7
0
1
0
1
1
1
1
0
0
0
0
1
0
1
Sector
WE
- I/O
X
X
X
=V
0
. This mode is primarily
IH
when Autoselect Mode
A15
A15
X
X
X
X
X
X
0
1
1
1
0
0
0
1
X
X
X
X
A14
A14
A9
V
V
V
V
X
X
X
X
0
0
1
0
1
1
X
X
X
X
ID
ID
ID
ID
A8 - A7 A6
X
X
X
X
6
A13
A13
Codes (High Voltage Method) table. In addition, when
verifying 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
using the autoselect mode.
X
X
X
X
0
1
X
X
0
1
X
X
X
X
V
V
V
V
IL
IL
IL
IL
A5 - A2
ID
Sector Size
Sector Size
. See "Command Definitions" for details on
X
X
X
X
(Kbytes)
(Kbytes)
64
64
64
32
16
16
32
64
64
64
8
8
8
8
V
V
V
V
A1
IH
IH
IL
IL
A29002/A290021 Series
V
V
AO
V
V
AMIC Technology, Inc.
IH
IL
IL
IH
Top Boot Block: 8Ch
Bottom Boot Block: 0Dh
3A000h - 3BFFFh
3C000h - 3FFFFh
00000h - 0FFFFh
10000h - 1FFFFh
20000h - 2FFFFh
30000h - 37FFFh
38000h - 39FFFh
00000h - 03FFFh
04000h - 05FFFh
06000h - 07FFFh
08000h - 0FFFFh
10000h - 1FFFFh
20000h - 2FFFFh
30000h - 3FFFFh
Address Range
Address Range
Identifier Code on
7
00h (unprotected)
01h (protected)
- I/O
I/O
0
7
37h
.To access the
- I/O
7Fh
0