AT45DB321D-MU SL383 Atmel, AT45DB321D-MU SL383 Datasheet - Page 14
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AT45DB321D-MU SL383
Manufacturer Part Number
AT45DB321D-MU SL383
Description
Manufacturer
Atmel
Datasheet
1.AT45DB321D-MU_SL383.pdf
(54 pages)
Specifications of AT45DB321D-MU SL383
Density
32Mb
Access Time (max)
6ns
Interface Type
Serial (SPI)
Address Bus
1b
Operating Supply Voltage (typ)
3.3V
Operating Temp Range
-40C to 85C
Package Type
MLF EP
Program/erase Volt (typ)
2.7 to 3.6V
Sync/async
Synchronous
Operating Temperature Classification
Industrial
Operating Supply Voltage (min)
2.7V
Operating Supply Voltage (max)
3.6V
Word Size
8b
Number Of Words
4M
Supply Current
15mA
Mounting
Surface Mount
Pin Count
8
Lead Free Status / RoHS Status
Compliant
9.1
14
Sector Protection Register
AT45DB321D
The nonvolatile Sector Protection Register specifies which sectors are to be protected or unpro-
tected with either the software or hardware controlled protection methods. The Sector Protection
Register contains 64 bytes of data, of which byte locations 0 through 63 contain values that
specify whether sectors 0 through 63 will be protected or unprotected. The Sector Protection
Register is user modifiable and must first be erased before it can be reprogrammed.
illustrates the format of the Sector Protection Register.:
Table 9-2.
Table 9-3.
Note:
Sector Number
Protected
Unprotected
Sectors 0a, 0b Unprotected
Protect Sector 0a (Pages 0-7)
Protect Sector 0b (Pages 8-127)
Protect Sectors 0a (Pages 0-7), 0b
(Pages 8-127)
1. The default value for bytes 0 through 63 when shipped from Atmel is 00H.
x = don’t care.
(1)
Sector Protection Register
Sector 0 (0a, 0b)
(Pages 0-7)
Bit 7, 6
0a
00
11
00
11
See
0 (0a, 0b)
Table 9-3
(Pages 8-127)
Bit 5, 4
0b
00
00
11
11
Bit 3, 2
xx
xx
xx
xx
Bit 1, 0
1 to 63
3597M–DFLASH–3/09
xx
xx
xx
xx
FFH
00H
Table 9-3
Value
Data
CxH
FxH
0xH
3xH