HAC830CV-M-A-2-A-2 Datasheet, PDF (48/49 Pages) Micronas – Robust Multi-Purpose Programmable Linear Hall-Effect Sensor with Integrated Capacitors

DATA SHEET
HAC 830
6.6. Programming Information
If the content of any register (except the lock registers) is to be changed, the desired
value must first be written into the corresponding RAM register. Before reading out the
RAM register again, the register value must be permanently stored in the EEPROM.
Permanently storing a value in the EEPROM is done by first sending an ERASE com-
mand followed by sending a PROM command. The address within the ERASE and
PROM commands must be zero. ERASE and PROM act on all registers in parallel.
If all HAC 830 registers are to be changed, all writing commands can be sent one after
the other, followed by sending one ERASE and PROM command at the end.
During all communication sequences, the customer has to check if the communication
with the sensor was successful. This means that the acknowledge and the parity bits
sent by the sensor have to be checked by the customer. If the Micronas programmer
board is used, the customer has to check the error flags sent from the programmer
board.
Note
For production and qualification tests, it is mandatory to set the LOCK bit
after final adjustment and programming of HAC 830. The LOCK function is
active after the next power-up of the sensor.
The success of the lock process must be checked by reading at least one
sensor register after locking and/or by an analog check of the sensor’s out-
put signal.
Electrostatic discharges (ESD) may disturb the programming pulses.
Please take precautions against ESD.
Micronas
Feb. 24, 2016; DSH000178_001EN
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