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HAR2425 датащи(PDF) 31 Page - Micronas

номер детали HAR2425
подробное описание детали  High-Precision Dual-Die Programmable Linear Hall-Effect Sensor Family
PDF  33 Pages
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производитель  MICRONAS [Micronas]
домашняя страница  http://www.micronas.com
Logo MICRONAS - Micronas

HAR2425 датащи(HTML) 31 Page - Micronas

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DATA SHEET
HAR 24xy
Micronas
July 14, 2015; DSH000170_001EN
31
6. Programming of the Sensor
HAR 24xy features two different customer modes. In
Application Mode the sensor provides an output sig-
nal. In Programming Mode it is possible to change
the register settings of the sensor.
After power-up the sensor is always operating in the
Application Mode. It is switched to the Programming
Mode by a pulse on the sensor output pin.
6.1. Programming Interface
In Programming Mode the sensor is addressed by
modulating a serial telegram on the sensors output
pin. The sensor answers with a modulation of the out-
put voltage.
A logical “0” is coded as no level change within the bit
time. A logical “1” is coded as a level change of typi-
cally 50% of the bit time. After each bit, a level change
occurs (see Fig. 6–1).
The serial telegram is used to transmit the EEPROM
content, error codes and digital values of the angle
information from and to the sensor.
Fig. 6–1: Definition of logical 0 and 1 bit
A description of the communication protocol and the
programming of the sensor is available in a separate
document
(Application:
HAR 2425
Programming
Guide).
logical 0
or
tbittime
tbittime
logical 1
or
tbittime
tbittime
50%
50%
50%
50%
Table 6–1: Telegram parameters (All voltages are referenced to GND1=GND2=GNDePad = 0 V)
Symbol
Parameter
Pin
Limit Values
Unit Test Conditions
Min.
Typ.
Max.
VOUTL
Voltage for Output Low Level
during Programming through
Sensor Output Pin
OUTx
0
0
0.2*VSUP
1
V
Vfor VSUP = 5 V
VOUTH
Voltage for Output High Level
during Programming through
Sensor Output Pin
OUTx
0.8*VSUP
4
VSUP
5.0
V
Vfor VSUP = 5 V
VSUPProgram VSUP Voltage for EEPROM
programming (after PROG
and ERASE)
VSUPx
5.7
6.0
6.5
V
Supply voltage for
bidirectional com-
munication via out-
put pin.
tbittime
Biphase Bit Time
OUTx
900
1000
1100
µs
Slew rate
OUTx
2
V/µs



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