MLX90277EGOSR0-0 MELEXIS [Melexis Microelectronic Systems], MLX90277EGOSR0-0 Datasheet - Page 16

• Manufacturer Part Number: MLX90277EGOSR0-0
• Description: Dual Programmable Linear Hall Effect Sensor
• Manufacturer: MELEXIS [Melexis Microelectronic Systems]

MLX90277
Dual Programmable Linear Hall Effect Sensor
12.2 Programming the Sensor
To program the individual MLX90277 sensors, connection to V
, GND, and V
is required. The device is
DD
OUT
placed into program mode by increasing the supply voltage to the V
program level. In program mode data
DD
is clocked into the device through the output pin using the Melexis tri-level PTC protocol. The clock and data
are integrated into one serial data stream, eliminating the need for a dedicated clock signal. The data is
clocked at the leading edge of each bit.
Figure 12.2-1 V
Programming Level
DD
Figure 12.2-2 Tri-Level PTC
Note: External capacitors and resistors will effect the rise and fall times for the programming waveforms.
Program pulse timings may require adjustment for the application. The device can not be programmed if
MEMLOCK equals 1.
The EEPROM contents can be read from the device. This procedure, known as a read back, is done by
sending a read command and then measuring the supply current. To successfully read the EEPROM it must
be possible to measure the supply current to the device. The Melexis PTC hardware and software tools
contain built in functions for reading the EEPROM.
The MLX90277 sensors can be programmed by using the PTC-04 programmer and the dedicated software
tools. The timing and voltage levels are controlled through the programming hardware and software. Further
details can be found in the MLX90277 software documentation.
3901090277
Page 16 of 21
Data Sheet
Rev 004
Nov/06