Eccel Technology Ltd BIORADRDR0200 Manuel D’Utilisation
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3.3 Memory Map
The device memory layout is shown below in Table 3.1.
In the RFID A1 module there are 728 bytes of user accessible memory. Each byte of the memory has a defined
factory default value and these values can be recovered by using the ‘Reset to Factory Defaults’ command. The first
288 bytes are volatile memory which also have a default reset state that is the same as the factory default value. The
other memory is buffered non-volatile memory and can be modified and stored using ‘Unlock’ and ‘Lock’ commands.
The RFID A1 module is automatically returned to factory default state if after power up there is no valid
configuration stored in non-volatile memory. The first 288 bytes of this user accessible memory are not stored in
non-volatile memory and are always reset to factory defaults after a power-up sequence or after exit from the Power
Down Mode.
factory default value and these values can be recovered by using the ‘Reset to Factory Defaults’ command. The first
288 bytes are volatile memory which also have a default reset state that is the same as the factory default value. The
other memory is buffered non-volatile memory and can be modified and stored using ‘Unlock’ and ‘Lock’ commands.
The RFID A1 module is automatically returned to factory default state if after power up there is no valid
configuration stored in non-volatile memory. The first 288 bytes of this user accessible memory are not stored in
non-volatile memory and are always reset to factory defaults after a power-up sequence or after exit from the Power
Down Mode.
Reading and writing to the registers can be done via one of two interfaces available on the module – I2C or SPI.
The
rest of the memory is accessible only when the module is unlocked. The default state of the module after power up is
locked.
locked.