Datasheet

TSYS01-FAMILY
Digital Temperature Sensor
SENSOR SOLUTIONS /// TSYS01-FAMILY
09/2017
Page 9
TEMPERATURE POLYNOMAL
ADC24: ADC value
ADC16: ADC24 / 256
T / °C = (-2) * k
4
* 10
-21
* ADC16
4
+
4 * k
3
* 10
-16
* ADC16
3
+
(-2) * k
2
* 10
-11
* ADC16
2
+
1 * k
1
* 10
-6
* ADC16 +
(-1.5) * k
0
* 10
-2
EXAMPLE
ADC24: 9378708
ADC16: 9378708 / 256 = 36636
T / °C = (-2) * 28446 * 10
-21
* 36636
4
+
4 * 24926 * 10
-16
* 36636
3
+
(-2) * 36016 * 10
-11
* 36636
2
+
1 * 32791 * 10
-6
* 36636 +
(-1.5) * 40781 * 10
-2
T / °C = 10.59
Serial number
Content / Description
Command
Size / bit
Example
Bit 16 … 8
Bit 7 … 0
SN
23...8
0xAC
16
0x0005 (H
0
= 0x00, L
0
= 0x05)
SN
7...0
Checksum
0xAE
16
0x96D9 (H
0
= 0x96, L
0
= 0xD9)
Serial number = 2
8
x SN
23...8
+ SN
7...0
EXAMPLE
Serial number: 2
8
x 5 + 150 = 1430
Checksum
In order to check communication and integrity of PROM content, the PROM includes a checksum. By
summarization of the complete PROM content in a byte by byte way, the verification can be performed.
The lower byte of the sum result has to be 0x00.