MLX90257 View Datasheet(PDF) - Melexis Microelectronic Systems

Part Name

Description

Manufacturer

MLX90257

Relative Integrated Pressure Sensor

Melexis Microelectronic Systems  

MLX90257

Relative Integrated Pressure Sensor

9. Die dimension and pad coordinates

Available upon request.

10. Calibration and Programming Procedure

Programming in Temporary Memory

The programming is done through the connector: only the application pins (supply, ground and output)

need to be used. The programming can be enabled by forcing the supply high enough (VCC_T). Through

the OUT pin one can input the data. The data is Pulse Width Modulated.

At the end of the programming, keep OUT high until VCC has reached its normal level (VCC_N).

Thereafter disconnect OUT. The time in between should be less than 100us.

Zapping of the Permanent Memory

Only 1 bit can be zapped at a time. First program 1 bit to ‘1’. A higher supply (VCC_Z) is needed to be

able to zap the bit. The zapping is done when OUT is high (OUT_Z).

A high current will flow during the zapping. It is recommended to limit this current to 200mA.

The memlock-bit should be zapped as last bit, as this disables programming function.

3901090257

Rev. 006

Page 7 of 9

Data Sheet

Mar/08

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