PCA8538UG(2014) View Datasheet(PDF) - NXP Semiconductors.

Part Name

Description

MFG CO.

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

A value of 0h corresponds to VLCD = 4 V and values equal or higher than 10Ch

correspond to VLCD = 12 V without temperature compensation. Every LSB change

corresponds to a VLCD programming step of 0.03 V. For further information, see

Equation 2 on page 33 and Section 8.10.3 on page 32.

8.3.3 Command: Set-bias-mode

Table 16. Set-bias-mode - set bias mode command bit description

This command is not applicable for the static drive mode.

Bit

Symbol

Value

Description

-

R/W

0

fixed value

-

RS[1:0]

00

fixed value

7 to 2 -

1101 00

fixed value

1 to 0 B[1:0]

set bias mode

00[1], 01

11

10

1⁄4 bias

1⁄3 bias

1⁄2 bias

[1] Default value.

8.4 Temperature compensation control commands

8.4.1 Command: Temperature-ctrl

The Temperature-ctrl command enables or disables the temperature measurement block

and the temperature compensation of VLCD (see Section 8.10.4 on page 38).

Table 17. Temperature-ctrl - temperature measurement control command bit description

For this command, the register selection bits have to be set RS[1:0] = 10.

Bit

Symbol

Value

Description

-

R/W

0

fixed value

-

RS[1:0]

10

fixed value

7 to 3 -

0000 0

fixed value

2

TCE

temperature compensation control

1

TMF

0[1]

temperature compensation of VLCD disabled

1

temperature compensation of VLCD enabled

temperature measurement filter

0[1]

digital temperature filter disabled[2]

1

digital temperature filter enabled

0

TME

temperature measurement control

0[1]

temperature measurement disabled;

no temperature readout possible

1

temperature measurement enabled;

temperature readout possible

[1] Default value.

[2] The unfiltered digital value of TD[7:0] is immediately available for the readout and VLCD compensation.

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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