Datasheet
MLX90640 32x24 IR array 
Datasheet 
Page 32 of 60
REVISION 11 – 3 AUGUST 2018 
OCC_column_30 
–
4
bits
OCC_column_29 – 4 bits 
OCC_column_30= 0
OCC_column_29 = 4 
0x2420 
Alpha scale
–
4
bits 
Scale_ACC_row – 4 bits 
Scale_ACC_column – 4 bits 
Scale_ACC_remnand – 4 bits 
0x79A6 
Alpha scale
= 
37
Scale_ACC_row = 9 
Scale_ACC_column = 10 
Scale_ACC_remnand = 6 
0x2421
Pix_sensitivity_average 
-
16 bits
0x2F44
Pix_sensitivity_average =
8.80391E
-
08
0x2422 
ACC_rows_04 
–
4
bits 
ACC_rows_03 – 4 bits 
ACC_rows_02 – 4 bits 
ACC_rows_01 – 4 bits 
0xFFDD 
ACC_rows_04 = 
-
1 
ACC_rows_03 = -1 
ACC_rows_02 = -3 
ACC_rows_01 = -3 
0x2423 
ACC_rows_08 
–
4
bits 
ACC_rows_07 – 4 bits 
ACC_rows_06 – 4 bits 
ACC_rows_05 – 4 bits 
0x2210 
ACC_rows_08 = 2 
ACC_rows_07 = 2 
ACC_rows_06 = 1 
ACC_rows_05 = 0 
0x2424 
ACC_rows_12 
–
4
bits 
ACC_rows_11 – 4 bits 
ACC_rows_10 – 4 bits 
ACC_rows_09 – 4 bits 
0x3333 
ACC_rows_12 = 3 
ACC_rows_11 = 3 
ACC_rows_10 = 3 
ACC_rows_09 = 3 
0x2425 
ACC_rows_16 
–
4
bits 
ACC_rows_15 – 4 bits 
ACC_rows_14 – 4 bits 
ACC_rows_13 – 4 bits 
0x2233 
ACC_rows_16 = 2 
ACC_rows_15 = 2 
ACC_rows_14 = 3 
ACC_rows_13 = 3 
0x2426 
ACC_rows_20 
–
4
bits 
ACC_rows_19 – 4 bits 
ACC_rows_18 – 4 bits 
ACC_rows_17 – 4 bits 
0xEF01 
ACC_rows_20 = 
-
2 
ACC_rows_19 = -1 
ACC_rows_18 = 0 
ACC_rows_17 = 1 
0x2427 
ACC_rows_24 
–
4
bits 
ACC_rows_23 – 4 bits 
ACC_rows_22 – 4 bits 
ACC_rows_21 – 4 bits 
0x9ACC 
ACC_rows_24 = 
-
7 
ACC_rows_23 = -6 
ACC_rows_22 = -4 
ACC_rows_21 = -4 
0x2428 
ACC_column_04 
–
4
bits 
ACC_column_03 – 4 bits 
ACC_column_02 – 4 bits 
ACC_column_01 – 4 bits 
0xEEDC 
ACC_column_04 = 
-
1 
ACC_column_03 = -1 
ACC_column_02 = -2 
ACC_column_01 = -3 
0x2429 
ACC_column_08 
–
4
bits 
ACC_column_07 – 4 bits 
ACC_column_06 – 4 bits 
ACC_column_05 – 4 bits 
0x10FF 
ACC_column_08 = 
1 
ACC_column_07 = 0 
ACC_column_06 = -1 
ACC_column_05 = -1 
0x242A 
ACC_column_12 
–
4
bits 
ACC_column_11 – 4 bits 
ACC_column_10 – 4 bits 
ACC_column_09 – 4 bits 
0x2221 
ACC_column_12 = 
2 
ACC_column_11 = 2 
ACC_column_10 = 2 
ACC_column_09 = 1 










