HAC830CV-M-A-2-A-2 Datasheet, PDF(39/49 Page) Micronas – Robust Multi-Purpose Programmable Linear Hall-Effect Sensor with Integrated Capacitors

English

English German Russian Spanish Italian Polish Chinese Japanese Korean French Portuguese	Language :

HAC830CV-M-A-2-A-2 Datasheet, PDF (39/49 Pages) Micronas – Robust Multi-Purpose Programmable Linear Hall-Effect Sensor with Integrated Capacitors

◁

DATA SHEET

HAC 830

6. Programming

6.1. Definition of Programming Pulses

The sensor is addressed by modulating a serial telegram on the supply voltage. The

sensor answers with a serial telegram on the output pin.

The bits in the serial telegram have a different bit time for the VSUP-line and the output.

The bit time for the VSUP-line is defined through the length of the Sync Bit at the begin-

ning of each telegram. The bit time for the output is defined through the Acknowledge

Bit.

A logical â0â is coded as no voltage change within the bit time. A logical â1â is coded as

a voltage change between 50% and 80% of the bit time. After each bit, a voltage

change occurs.

6.2. Definition of the Telegram

Each telegram starts with the Sync Bit (logical 0), 3 bits for the Command (COM), the

Command Parity Bit (CP), 4 bits for the Address (ADR), and the Address Parity Bit (AP).

There are 4 kinds of telegrams:

â Write a register (see Fig. )

After the AP Bit, follow 14 Data Bits (DAT) and the Data Parity Bit (DP). If the telegram

is valid and the command has been processed, the sensor answers with an Acknowl-

edge Bit (logical 0) on the output.

â Read a register (see Fig. 6â3)

After evaluating this command, the sensor answers with the Acknowledge Bit, 14

Data Bits, and the Data Parity Bit on the output.

â Programming the EEPROM cells (see Fig. 6â4)

After evaluating this command, the sensor answers with the Acknowledge Bit. After

the delay time tw, the supply voltage rises up to the programming voltage.

â Activate a sensor (see Fig. 6â4)

If more than one sensor is connected to the supply line, selection can be done by first

deactivating all sensors. The output of all sensors have to be pulled to ground. With

an Activate pulse on the appropriate output pin, an individual sensor can be selected.

All following commands will only be accepted from the activated sensor.

Micronas

Feb. 24, 2016; DSH000178_001EN

▷