Datasheet

MLX90640 32x24 IR array
Datasheet
Page 17 of 60
REVISION 11 – 4 MAY 2018
Figure 13 Control register1 (0x800D) bits meaning
Enable subpage mode
(Bit 0)
Enable subpage repeat
(Bit 3)
Select subpage
(Bit 4)
Working mode
0 0 - measure subpage 0 only
0 1 - measure subpage 0 only
1 0 - 0  1  0  1 …
1 1 0 measure subpage 0 only
1 1 1 measure subpage 1 only
Table 6 Priorities of subpage controls
B15 B14 B13 B12 B11 B10 B9 B8 B7 B6 B5 B4 B3 B2 B1 B0
Reading pattern
Enable subpages repeat
Enable data hold
enable step mode
Enable subpages mode
Control register 1 - 0x800D
0 No subpages, only one page will be measured
1 Subpade mode is activated (default)
0 Device is in continuous mode (default)
1 Step mode activated. Only one measurement is done and wait for next command
0 Transfer the data into storage RAM at each measured frame (default)
1 Transfer the data into storage RAM only if en_overwrite = 1 (check 0x8000)
0 Only sub pade 0 will be measured (default)
1 Active only if en_sub_page=1 then sel_sub_page determines which subpage to be measured
0 0 0 Subpage 0 is selected (default)
0 0 1 Subpage 1 is selected
0 1 0 Not Applicable
0 1 1 Not Applicable
1 0 0 Not Applicable
1 0 1 Not Applicable
1 1 0 Not Applicable
1 1 1 Not Applicable
0 0 0 IR refresh rate = 0.5Hz
0 0 1 IR refresh rate = 1Hz
0 1 0 IR refresh rate = 2Hz (default)
0 1 1 IR refresh rate = 4Hz
1 0 0 IR refresh rate = 8Hz
1 0 1 IR refresh rate = 16Hz
1 1 0 IR refresh rate = 32Hz
1 1 1 IR refresh rate = 64Hz
0 0 ADC set to 16 bit resolution
0 1 ADC set to 17 bit resolution
1 0 ADC set to 18 bit resolution (default)
1 1 ADC set to 19 bit resolution
0 Interleaved (TV) mode
1 Chess pattern (default)
- - - Melexis reserved
Select subpage
Refresh rate control
Resolution control
Melexis reserved