PCF8536AT datasheet(5/54 Pages) NXP

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PCA85276

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Product data sheet

Rev. 3 — 12 November 2018

5 of 54

NXP Semiconductors

PCA85276

Automotive 40 x 4 LCD driver

Functional description

The PCA85276 is a versatile peripheral device designed to interface between any

microcontroller to a wide variety of LCD segment or dot-matrix displays. It can directly

drive any static or multiplexed LCD containing up to four backplanes and up to

40 segments.

6.1 Commands of PCA85276

The commands available to the PCA85276 are defined in Table 4.

All available commands carry a continuation bit C in their most significant bit position as

shown in Figure 21. When this bit is set logic 1, it indicates that the next byte of the

transfer to arrive will also represent a command. If this bit is set logic 0, it indicates that

the command byte is the last in the transfer. Further bytes are regarded as display data

(see Table 5).

Table 4.

Definition of the PCA85276 commands

Bit position labeled as - is not used.

Command

Operation Code

Reference

Bit

mode-set

M[1:0]

Table 6

load-data-pointer

P[5:0]

Table 7

device-select

110

00A[1:0]

Table 8

bank-select

Table 9

blink-select

BF[1:0]

Table 10

Table 5.

C bit description

Bit

Symbol

Value

Description

continue bit

last control byte in the transfer; next byte will be regarded

as display data

control bytes continue; next byte will be a command too

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