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MLX90308CCC Datasheet(PDF) 21 Page - Micro Electronics |
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MLX90308CCC Datasheet(HTML) 21 Page - Micro Electronics |
21 / 26 page ![]() MLX902xx Name of Sensor Rev Y.X 22/Aug/98 Page 21 MLX90308CCC Programmable Sensor Interface MLX90308CCC Programmable Sensor Interface Page 21 Rev 2.2 23/Oct/01 Note: Because of space considerations, the measured temperature can’t be kept in the RAM at all times. If the measured temperature is to be available, the temperature filter variable, N_Factor, must be set to 6. Table 13. RAM Byte Definitions (continued) Byte Functions Remarks 30 ALARM control byte IO1/IO2 control byte 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). These bits are multiplexed according the mode. Note: if both CMO and VMO are active, then alarm is not active. 31 ALARM low trigger level IO1/IO2 level 1 Value below which ALARM will go on. Value of first level ([IO2,IO1]=00-01). 32 ALARM low output level IO1/IO2 level 2 Value of DIGMO during “ALARM low” condition. Value of second level ([IO2,IO1]=01-10). 33 ALARM high trigger level IO1/IO2 level 3 Value above which ALARM will go on. Value of third level ([IO2,IO1] = 10-11). 34 ALARM high output level Value of DIGMO during “ALARM high” condition. 35-36 A_16 16 bits A Register. 37-38 B_16 16 bits B Register. 39-42 RESULT_32 32 bits result (for 16 bit multiplication). 43-44 Tempo1 Measured temperature, internal or external, and temporary variable 1. 45 Tempo2 Temporary variable 2. 46-47 Signal_In Digitized signal value, analog and digital mode 48 Coms_backup Address saved when command is send. 49 P3_copy Port 3 setting copy. 50 Adsav1 Address saved at interrupt. 51-52 Aaccsav A-Accumulators saved at interrupt. 53 Baccsav B-Accumulators saved at interrupt. 54-55 DAC_gain DAC gain (GN). 56-57 DAC_offset DAC offset (OF). 58-59 Temp_f Filtered temperature. This is a 10 bit number that is left justi- fied in a 16 bit field. 60-61 Signal_Out Digitized linearity corrected signal value. Digital mode only. 62-63 Adsav2 Address saved when call. |
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