AT25DF641-S3H-B Atmel, AT25DF641-S3H-B Datasheet - Page 35

• Manufacturer Part Number: AT25DF641-S3H-B
• Description: IC FLASH 64MBIT 100MHZ 16SOIC
• Manufacturer: Atmel

Specifications of AT25DF641-S3H-B

• Format - Memory: FLASH
• Memory Type: DataFLASH
• Memory Size: 64M (32K pages x 256 bytes)
• Speed: 100MHz
• Interface: SPI, 3-Wire Serial
• Voltage - Supply: 2.7 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 16-SOIC (0.300", 7.5mm Width)
• Architecture: Sectored
• Interface Type: SPI Serial
• Supply Voltage (max): 3.6 V
• Supply Voltage (min): 2.7 V
• Maximum Operating Current: 19 mA
• Mounting Style: SMD/SMT
• Organization: 64 KB x 128
• Memory Configuration: 32K Pages X 256 Bytes
• Clock Frequency: 100MHz
• Supply Voltage Range: 2.7V To 3.6V
• Memory Case Style: SOIC
• Rohs Compliant: Yes
• Cell Type: NOR
• Density: 64Mb
• Access Time (max): 5ns
• Boot Type: Not Required
• Address Bus: 1b
• Operating Supply Voltage (typ): 3.3V
• Operating Temp Range: -40C to 85C
• Package Type: SOIC
• Sync/async: Synchronous
• Operating Temperature Classification: Industrial
• Operating Supply Voltage (min): 2.7V
• Operating Supply Voltage (max): 3.6V
• Supply Current: 19mA
• Mounting: Surface Mount
• Pin Count: 16
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

10.1.1. SPRL Bit
3680F–DFLASH–4/10
Table 10-2.
Notes: 1. Only bits 4 and 3 of Status Register Byte 2 will be modified when using the Write Status Register
The SPRL bit is used to control whether the Sector Protection Registers can be modified or not. When the SPRL
bit is in the logical “1” state, all Sector Protection Registers are locked and cannot be modified with the Protect
Sector and Unprotect Sector commands (the device will ignore these commands). In addition, the Global Protect
and Global Unprotect features cannot be performed. Any sectors that are presently protected will remain
protected, and any sectors that are presently unprotected will remain unprotected.
When the SPRL bit is in the logical “0” state, all Sector Protection Registers are unlocked and can be modified
(the Protect Sector and Unprotect Sector commands, as well as the Global Protect and Global Unprotect features,
will be processed as normal). The SPRL bit defaults to the logical “0” state after device power-up. The Reset
command has no effect on the SPRL bit.
The SPRL bit can be modified freely whenever the
the SPRL bit may only be changed from a logical “0” (Sector Protection Registers are unlocked) to a logical “1”
(Sector Protection Registers are locked). In order to reset the SPRL bit back to a logical “0” using the Write Status
Register Byte 1 command, the
The SPRL bit is the only bit of Status Register Byte 1 that can be user modified via the Write Status Register Byte
1 command.
Bit
7
6
5
4
3
2
1
0
(1)
2. R/W = Readable and writeable
RDY/BSY Ready/Busy Status
RSTE
RES
RES
RES
SLE
Byte 2 command
R = Readable only
PS
ES
Status Register Format – Byte 2
Reserved for future use
Reserved for future use
Reserved for future use
Reset Enabled
Sector Lockdown Enabled
Program Suspend Status
Erase Suspend Status
Name
WP
pin will have to first be deasserted.
Type
WP
R/W
R/W
R
R
R
R
R
R
pin is deasserted. However, if the
(2)
0
0
0
0
1
0
1
0
1
0
1
0
1
Reserved for future use.
Reserved for future use.
Reserved for future use.
Reset command is disabled (default).
Reset command is enabled.
Sector Lockdown and Freeze Sector Lockdown
State commands are disabled (default).
Sector Lockdown and Freeze Sector Lockdown
State commands are enabled.
No sectors are program suspended (default).
A sector is program suspended.
No sectors are erase suspended (default).
A sector is erase suspended.
Device is ready.
Device is busy with an internal operation.
Atmel AT25DF641
Description
WP
pin is asserted, then
35