1. Features and Benefits ............................................................................................................................ 1
10. Detailed General Description............................................................................................................... 9
10.1. Pixel position ..................................................................................................................................... 9
10.2. Communication protocol ............................................................................................................... 10
12.2. Startup time .................................................................................................................................... 43
12.2.1. First valid data........................................................................................................................... 43
12.3. Noise performance and resolution ................................................................................................ 44
12.4. Field of view (FOV) .......................................................................................................................... 45
13. Application information ..................................................................................................................... 46
Table 10 Calculation example input data ........................................................................................................................................27
Table 11 Calculation example calibration data ................................................................................................................................29
Table 13 Available FOV options ......................................................................................................................................................46
Table 14 Revision history ...............................................................................................................................................................52
Figure 2 MLX90641 Overview and pin description ........................................................................................................................... 7
Figure 3 Pixel in the whole FOV ....................................................................................................................................................... 9
2
Figure 4 I C write command format (default SA=0x33 is used) ........................................................................................................10
2
Figure 5 I C read command format (default SA=0x33 is used) .........................................................................................................10
Figure 10 Status register (0x8000) bits meaning .............................................................................................................................14
Figure 11 Control register 1 (0x800D) bits meaning ........................................................................................................................15
2
Figure 12 I C configuration register (0x800F) bits meaning .............................................................................................................16
Figure 14 EEPROM to registers mapping .........................................................................................................................................17
Figure 15 EEPROM Hamming and data bit meaning ........................................................................................................................20
Figure 16 To calculation flow .........................................................................................................................................................30
Figure 17 Temperature absolute accuracy - MLX90641BCA .............................................................................................................41
Figure 18 Temperature absolute accuracy - MLX90641BCB .............................................................................................................42
Figure 19 Different accuracy zones depending on device type (BCA on the left and BCB on the right) ..............................................42
Figure 20 MLX90641BCx noise vs refresh rate for different device types .........................................................................................44
Figure 21 MLX90641BCA noise vs pixel and refresh rate at 1Hz and 2Hz .........................................................................................44
Figure 22 MLX90641BCA noise vs pixel and refresh rate at 4Hz, 8Hz and 16Hz ................................................................................44
Figure 23 MLX90641BCB noise vs pixel and refresh rate at 1Hz and 2Hz..........................................................................................45
Figure 24 MLX90641BCB noise vs pixel and refresh rate at 4Hz, 8Hz and 16Hz ................................................................................45
Figure 25 Field Of View measurement ............................................................................................................................................45
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GD32 MCU
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