AT45DB081D-SU Atmel, AT45DB081D-SU Datasheet - Page 14

• Manufacturer Part Number: AT45DB081D-SU
• Description: IC FLASH 8MBIT 66MHZ 8SOIC
• Manufacturer: Atmel

Specifications of AT45DB081D-SU

• Format - Memory: FLASH
• Memory Type: DataFLASH
• Memory Size: 8M (4096 pages x 264 bytes)
• Speed: 66MHz
• Interface: SPI, RapidS
• Voltage - Supply: 2.7 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 8-SOIC (5.3mm Width), 8-SOP, 8-SOEIAJ
• Architecture: Sectored
• Interface Type: SPI
• Supply Voltage (max): 3.6 V
• Supply Voltage (min): 2.7 V
• Maximum Operating Current: 15 mA
• Mounting Style: SMD/SMT
• Organization: 64 KB x 16
• Memory Configuration: 4096 Pages X 264 Bytes
• Clock Frequency: 50MHz
• Supply Voltage Range: 2.5V To 3.6V, 2.7V To 3.6V
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

9.1
14
Sector Protection Register
AT45DB081D
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 16 bytes of data, of which byte locations 0 through 15 contain values that
specify whether sectors 0 through 15 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
Protect Sector 0b (Page 8-255)
Protect Sectors 0a (Page 0-7), 0b
(Page 8-255)
1. The default value for bytes 0 through 15 when shipped from Atmel
x = don’t care.
(1)
Sector Protection Register
Sector 0 (0a, 0b)
(Page 0-7)
Bit 7, 6
0a
00
11
00
11
See
0 (0a, 0b)
Table 9-3
(Page 8-255)
Bit 5, 4
0b
00
00
11
11
Bit 3, 2
xx
xx
xx
xx
®
is 00H.
Bit 1, 0
1 to 15
xx
xx
xx
xx
FFH
3596F–DFLASH–8/07
00H
Table 9-3
Value
Data
CxH
FxH
0xH
3xH