a29800tm-90i AMIC Technology Corporation, a29800tm-90i Datasheet - Page 9

• Manufacturer Part Number: a29800tm-90i
• Description: 1024k X 8 Bit / 512k X 16 Bit Cmos 5.0 Volt-only, Boot Sector Flash Memory
• Manufacturer: AMIC Technology Corporation

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
sector protection, the sector address must appear on the
Manufacturer ID: AMIC
Device ID: A29800
(Top Boot Block)
Device ID: A29800
(Bottom Boot Block)
Continuation ID
Sector Protection Verification
L=Logic Low= V
(November, 2007, Version 1.3)
Description
ID
(11.5V to 12.5 V) on address pin A9. Address
IL
, H=Logic High=V
Mode
Word
Word
Byte
Byte
7
Table 4. A29800 Autoselect Codes (High Voltage Method)
- 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
A18
A12
SA
to
X
X
X
X
A11
A10
to
X
X
X
X
X
8
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
To access the 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
details on using the autoselect mode.
V
V
A9
V
V
V
ID
ID
ID
ID
ID
A8
A7
to
X
X
X
X
X
A6
L
L
L
L
L
A5
A2
to
X
X
X
X
X
AMIC Technology, Corp.
ID
A1
H
H
L
L
L
. See "Command Definitions" for
A0
H
H
H
L
L
7
- I/O
A29800 Series
I/O
I/O
B3h
B3h
0
to
X
X
X
X
X
X
.
15
8
(unprotected)
(protected)
0Eh
0Eh
I/O
I/O
37h
8Fh
8Fh
7Fh
01h
00h
to
7
0