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MLX90308CCC Datasheet(PDF) 18 Page - Micro Electronics |
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MLX90308CCC Datasheet(HTML) 18 Page - Micro Electronics |
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18 / 26 page  MLX90308CCC Programmable Sensor Interface MLX90308CCC Programmable Sensor Interface Page 18 Rev 2.2 23/Oct/01 Byte Designation Note 24 PNB_TNB Number of temperature and pressure gaps. See Tables 4, 5, and 6, and Figures 3 and 4. 25 n_factor Temperature filter coefficient, four LSB's. Four MSB's must all be zero. 26 Not used This byte is not used. 27 ALARM low trigger Level1 IO2/IO1 Value below which ALARM will go on. Value of first level ([IO2, IO1]= 00-01). See Figures 5 & 7. 28 ALARM low output Level2 IO2/IO1 Value of DIGMO during “ALARM low” condition. Value of second level ([IO2,IO1] = 01-10). See Figures 5 and 7 29 ALARM high trigger Level3 IO2/IO1 Value above which ALARM will go on. Value of third level ([IO2,IO1]=10-11). See Figures 5 and 7. 30 ALARM high out level Value of DIGMO during “ALARM high” condition. See Figures 5 and 7. 31 ALARM control byte IO1/IO2 control byte Four LSB's are unused Three bits needed for choice of input for ALARM detection (TPO, IAO, GNO, VMO, IO1 or IO2). Two bits needed for choice of input for LEVEL-steering (TPO, IAO, GNO or VMO). The above bits are multiplexed according to the mode. If both CMO and VMO are active, then alarm is not active. 32 ClkTC1 Value of Cadj at low temperature (Don’t change; factory set). 33 ClkTC2 Value of Cadj at mid temperature (Don’t change; factory set). 34 ClkTC3 Value of Cadj at high temperature Don’t change; factory set). 35 Ctemp1 First Cadj temperature point, eight MSB’s of the 10 bit internal temperature value (set at factory; do not change). 36 Ctemp2 Second Cadj temperature point, eight MSB’s of the 10 bit internal temperature value (set at factory; do not change). 37-38 Not used These bytes are not used by the firmware and are available to the user. 39 CLKgntp Setting for temperature amplifier for clock temperature adjustment temperature reading (set at factory; do not change). 40-41 Faultval Value sent to output if checksum test fails is a 10 bit value. 42-46 Not Used These bytes are not used by the firmware and are available to the user. 47 Checksum EEPROM checksum; value needed to make all bytes add to 0FFh. Must be set by user if checksum test is active. Table 11. EEPROM Byte Definitions (continued) |
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