4 EEPROM
The sensor’s non volatile memory (EEPROM) is organized in 16-bit (word) registers which can be addressed
individually.
When content in the user area is re programmed, a CRC check register has to be updated. Since the EEPROM CRC
is calculated covering the entire EEPROM storage space, the user is required to readout the entire EEPROM
content, calculate the new CRC values and store it into the respective registers. An incorrect CRC value will be
detected by the sensor and cause a transition to its safe state. In case of a CRC error the OCD open drain output
will be set to GND.
All 18 lines of the EEPROM are readable because the CRC calculation has to be done with the complete data
content of the EEPROM. The device is doing a cyclic redundancy check (CRC) of the EEPROM content while
accessing the EEPROM and indicates an error on the OCD pin in case of a wrong programmed CRC.
Address 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
Customer accessible settings Customer accessible settings
40
hex
Customer accessible settings Customer accessible settings
41
hex
Customer accessible settings Customer accessible CRC
42
hex
read only read only
43
hex
read only read only
...
read only read only
51
hex
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