PCA8530DUGSLASHDAZ datasheet(10/103 Pages) NXP

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PCA8530

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Product data sheet

Rev. 2 — 25 September 2014

10 of 103

NXP Semiconductors

PCA8530

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

8.2 General control commands

8.2.1 Initialization

8.2.1.1

Command: Initialize

This command generates a chip-wide reset of the device without changing the content of

the display RAM. For further information about start-up and shut-down, see Section 8.8 on

page 26.

8.2.1.2

RST pin

The RST pin generates a chip-wide reset of the device without changing the content of the

display RAM. For further information about start-up and shut-down, see Section 8.8 on

page 26.

8.2.2 Command: OTP-refresh

Each IC is calibrated during production and testing of the device in order to achieve the

specified accuracy of the VLCD, the frame frequency, and the temperature measurement.

This calibration is performed on EPROM cells called One Time Programmable (OTP)

cells. These cells are read by the device after a reset and every time when the Initialize

command or the OTP-refresh command is sent. The OTP-refresh command takes

approximately 10 ms to finish.

Table 6.

Initialize command bit description

Bit

Symbol

Value

Description

-R/W

fixed value

RS[1:0]

fixed value

7 to 0

00111010

fixed value

Table 7.

OTP-refresh - OTP-refresh command bit description

Bit

Symbol

Value

Description

-R/W

fixed value

RS[1:0]

fixed value

7 to 0

11011000

fixed value

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