PCA8538UG(2014) 查看數據表（PDF） - NXP Semiconductors.

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PCA8538UG
(Rev.:2014)

Automotive 102 x 9 Chip-On-Glass LCD segment driver

NXP Semiconductors. 

NXP Semiconductors

PCA8538

Automotive 102 x 9 Chip-On-Glass LCD segment driver

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Fig 14. VLCD generation including temperature compensation

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In Equation 2 the main parameters are the programmed digital value term and the

compensated temperature term.

VLCD = V8:0 + VT8:0  n + m

(2)

1. V[8:0] is the binary value of the programmed voltage.

2. VT[8:0] is the binary value of the temperature compensated voltage. Its value comes

from the temperature compensation block and is a two’s complement which has the

value 0h at 20 C.

3. m and n are fixed values (see Table 31 and Figure 15).

Table 31. Parameters of VLCD generation

Symbol

Value

Unit

m

3.99

V

n

0.03

V

Figure 15 shows how VLCD changes with the programmed value of V[8:0].

PCA8538

Product data sheet

All information provided in this document is subject to legal disclaimers.

Rev. 4 — 26 September 2014

© NXP Semiconductors N.V. 2014. All rights reserved.

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