AT25DL081-SSHN-B Adesto Technologies, AT25DL081-SSHN-B Datasheet - Page 26

• Manufacturer Part Number: AT25DL081-SSHN-B
• Description: Flash 8M 1.65-1.95V 100Mhz Serial Flash
• Manufacturer: Adesto Technologies

Specifications of AT25DL081-SSHN-B

• Rohs: yes
• Data Bus Width: 8 bit
• Memory Type: Flash
• Memory Size: 8 Mbit
• Architecture: Flexible, Uniform Erase
• Timing Type: Synchronous
• Interface Type: SPI
• Supply Voltage - Max: 1.95 V
• Supply Voltage - Min: 1.65 V
• Maximum Operating Current: 20 mA
• Operating Temperature: - 40 C to + 85 C
• Mounting Style: SMD/SMT
• Package / Case: SOIC-8

Table 9-2.
State
WP
0
0
1
1
Current
SPRL
Value
Valid SPRL and Global Protect/Unprotect Conditions
0
1
0
1
New Write Status
Register Byte 1
7 6 5 4 3 2 1 0
0 x 0 0 0 0 x x
0 x 0 0 0 1 x x
0 x 1 1 1 0 x x
0 x 1 1 1 1 x x
1 x 0 0 0 0 x x
1 x 0 0 0 1 x x
1 x 1 1 1 0 x x
1 x 1 1 1 1 x x
0 x 0 0 0 0 x x
0 x 0 0 0 1 x x
0 x 1 1 1 0 x x
0 x 1 1 1 1 x x
1 x 0 0 0 0 x x
1 x 0 0 0 1 x x
1 x 1 1 1 0 x x
1 x 1 1 1 1 x x
0 x 0 0 0 0 x x
0 x 0 0 0 1 x x
0 x 1 1 1 0 x x
0 x 1 1 1 1 x x
1 x 0 0 0 0 x x
1 x 0 0 0 1 x x
1 x 1 1 1 0 x x
1 x 1 1 1 1 x x
x x x x x x x x
Data
Bit






Protection Operation
Global Unprotect – all Sector Protection Registers reset to 0
No change to current protection
No change to current protection
No change to current protection
Global Protect – all Sector Protection Registers set to 1
Global Unprotect – all Sector Protection Registers reset to 0
No change to current protection
No change to current protection
No change to current protection
Global Protect – all Sector Protection Registers set to 1
No change to the current protection level. All sectors currently protected will remain protected
and all sectors currently unprotected will remain unprotected.
The Sector Protection Registers are hard-locked and cannot be changed when the WP pin is
low and the current state of SPRL is 1. Therefore, a Global Protect/Unprotect will not occur. In
addition, the SPRL bit cannot be changed (the WP pin must be high in order to change SPRL
back to a 0).
Global Unprotect – all Sector Protection Registers reset to 0
No change to current protection
No change to current protection
No change to current protection
Global Protect – all Sector Protection Registers set to 1
Global Unprotect – all Sector Protection Registers reset to 0
No change to current protection
No change to current protection
No change to current protection
Global Protect – all Sector Protection Registers set to 1
No change to the current protection level. All sectors currently protected will
remain protected and all sectors currently unprotected will remain unprotected.
The Sector Protection Registers are soft-locked and cannot be changed when
the current state of SPRL is 1. Therefore, a Global Protect/Unprotect will
not occur. However, the SPRL bit can be changed back to a 0 from a 1 since the
WP pin is high. To perform a Global Protect/Unprotect, the Write Status Register
command must be issued again after the SPRL bit has been changed from
1 to 0.
AT25DL081 [DATASHEET]
8732E–DFLASH–1/2013
SPRL
Value
New
0
0
0
0
0
1
1
1
1
1
0
0
0
0
0
1
1
1
1
1
0
0
0
0
0
1
1
1
1
1
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