PCF8536AT datasheet(43/103 Pages) NXP

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PCA8530

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Product data sheet

Rev. 2 — 25 September 2014

43 of 103

NXP Semiconductors

PCA8530

Automotive 102 x 4 Chip-On-Glass LCD segment driver

[1]

The relationship between the temperature coefficients SA to SF and the slope factor is derived from the

following equation:

, where LSB of V[8:0]

 30 mV.

The binary value of the temperature compensated voltage VT[8:0] is calculated according

to Table 34.

Table 33.

Temperature coefficients

TSA[2:0] to TSF[2:0] value

Slope factor (mV/

C)

Temperature coefficients

SA to SF[1]

000

0.000

001

6

0.125

010

12

0.250

011

24

0.500

100

60

1.250

101

+0.125

110

+12

+0.250

111

+24

+0.500

Table 34.

Calculation of the temperature compensated value VT

Temperature

(

C)

Digital temperature:

TD[7:0]

Binary value of the temperature compensated

voltage: VT[8:0]

0.6275

C



LSB of V[8:0] mV



-----------------------------------------------

slope factor (mV/

C 



T40

C

–



TD 7:0



–



–

 SB T1 SA



–



–



C

–

TT1





0TD 7:0

 T1





–



–

 SB

TD 7:0



–

 SA



–



–







TD 7:0

 T2





–



–

TD 7:0



–

 SB



–



C





TD 7:0

 96





TD 7:0



–



–



CTT3





TD 7:0

 T3





TD 7:0

 96

–

 SD







TD 7:0

 T4





–

 SD



TD 7:0

 T3

–

 SE



105

C





TD 7:0

 231





–

 SD

–

 SE

TD 7:0

 T4

–

 SF



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