mlx90807 Melexis Company, mlx90807 Datasheet - Page 7
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mlx90807
Manufacturer Part Number
mlx90807
Description
Relative Integrated Pressure Sensor
Manufacturer
Melexis Company
Datasheet
1.MLX90807.pdf
(8 pages)
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9.2 Zapping of the 90807
The permanent memory of the 90807 is built with zap cells.
The data output of an unprogrammed zap cell is 0. The data output is 1 when the cell is zapped.
It is not possible to reprogram a zap cell to 0. Only 1 bit can be zapped at a time.
You should use the normal mode (TC[5:0]=00h) and program 1 bit to '1' in the temporary memory.
Afterwards you need to increase the supply voltage (VCC_Z) to be able to zap the bit. The zapping starts
when OUT goes high (OUT_Z). There will flow a high current of approximately 200mA during the zapping.
The memlock-bit should be zapped as last bit, because it disables the programming.
The zap cells can also be read out by using mode 5 (TC[5:0]=05h).
One bit should be set to 1 in the temporary memory.
The supply current should be measured at the normal supply voltage.
A low current (ICC_R0) indicates that the zap cell is not programmed.
A high current (ICC_R1) indicates that the zap cell is programmed.
3901090807
Rev 003
Page 7 of 8
Relative Integrated Pressure Sensor
MLX90807
Data Sheet
Feb 08