HAL1002 datasheet(28/29 Pages) MICRONAS

28 / 29 page

HAL 1002

DATA SHEET

April 25, 2014; DSH000163_001EN

Micronas

6.6. Programming Information

If the content of any register (except the lock registers)

is to be changed, the desired value must first be writ-

ten into the corresponding RAM register. Before read-

ing 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 command 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 HAL 1002 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 man-

datory to set the LOCK bit after final adjustment

and programming of HAL 1002. The LOCK func-

tion is active after the next power-up of the sen-

sor.

The success of the lock process shall be

checked by reading at least one sensor register

after locking and/or by an analog check of the

sensors output signal.

Electrostatic discharges (ESD) may disturb the

programming pulses. Please take precautions

against ESD.

HAL1002 Datasheet(PDF) 28 Page - Micronas