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參數(shù)資料
| 型號(hào)： | AM29PL160CB-90REI |
| 英文描述： | DIE SALE, 1.8V, 27MIL(SERIAL EE) |
| 中文描述： | x8/x16閃存EEPROM |
| 文件頁數(shù)： | 23/67頁 |
| 文件大小： | 635K |
| 代理商： | AM29PL160CB-90REI |
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August 8, 2003
Am29PDL129H
21
P R E L I M I N A R Y
Table 5.
SecSi
TM
Sector Addresses
Autoselect Mode
The autoselect mode provides manufacturer and de-
vice identification, and sector protection verification,
through identifier codes output on DQ7–DQ0. This
mode is primarily intended for programming equip-
ment to automatically match a device to be pro-
grammed 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
ID
on address pin A9. Address pins
must be as shown in
Table 6
. In addition, when verify-
ing sector protection, the sector address must appear
on the appropriate highest order address bits (see
Table 4
).
Table 6
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 DQ7–DQ0.
However, the autoselect codes can also be accessed
in-system through the command register, for instances
when the device is erased or programmed in a system
without access to high voltage on the A9 pin. The
command sequence is illustrated in
Table 14
.
Note
that if a Bank Address (BA) on address bits A21 and
A20 is asserted during the third write cycle of the au-
toselect command, the host system can read autose-
lect data that bank and then immediately read array
data from the other bank, without exiting the autose-
lect mode.
To access the autoselect codes in-system, the host
system can issue the autoselect command via the
command register, as shown in
Table 14
. This method
does not require V
ID
. Refer to the
Autoselect Com-
mand Sequence
section for more information.
Sector Size
128 words
64 words
64 words
Address Range
000000h–00007Fh
000000h-00003Fh
000040h-00007Fh
Am29PDL129H
Factory-Locked Area
Customer-Lockable Area
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