AT24RF08-EK Atmel, AT24RF08-EK Datasheet - Page 4

• Manufacturer Part Number: AT24RF08-EK
• Description: KIT EVAL FOR AT24RF08CN-10SC
• Manufacturer: Atmel
• Type: Dual Access EEPROMr

Specifications of AT24RF08-EK

• Contents: Atmel Asset ID Kit CDROM, 4 RFID Tags, Reader with Serial Port Cable and 9V Power Supply
• For Use With/related Products: AT24RF08C
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

For example, when SB1 is a 1, the PB1 field can be written
to any value by the system. When the PB1 field is 11, Block
1 can be written by the system. Note that the state of the
SB1 bit does not affect whether or not Block 1 can be
written.
Write Protection Flow
EEPROM Tamper Latch
There is an additional EEPROM tamper latch that can be
set from the RFID port and reset from the serial port of the
device. Resetting this bit from the serial port takes less
than 10 ms. Setting of this bit from the RFID side when
powered from L1/L2, takes about 7.9 ms but requires less
than 30 µA of current. See “RFID Command” on page 8.
4
AT24RF08C
There is no individual page Write Protection for any other
block other than block 0 within the device. Within the
remaining blocks on the chip, access permissions are con-
trolled on a block basis (PB or RF bits) or full chip basis
(WP pin) only.
Access to this tamper bit from the serial interface is via the
LSB of the tamper byte of the access protection page. See
“Access Protection Page” below. The bit can only be set to
0 via the serial port. Attempts to write it to a value of one
are ignored.