PCF8562_4

© NXP B.V. 2009. All rights reserved.

Product data sheet

Rev. 04 — 18 March 2009

22 of 36

NXP Semiconductors

PCF8562

Universal LCD driver for low multiplex rates

An acknowledgement after each byte is asserted only by the PCF8562s that are

access.

7.17 Command decoder

The commands available to the PCF8562 are defined in Table 7.

[1]

Not used.

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

shown in Figure 16. When this bit is set, it indicates that the next byte of the transfer to

arrive will also represent a command. If this bit is reset, it indicates that the command byte

is the last in the transfer. Further bytes will be regarded as display data (see Table 8).

Table 7.

Definition of PCF8562 commands

Command

Operation Code

Reference

Bit

7

6

5

4

3

2

1

0

mode-set

C

1

0

[1]

E

B

M1

M0

Table 9

load-data-pointer

C

0

0

P4

P3

P2

P1

P0

Table 10

device-select

C

1100A2

A1

A0

Table 11

bank-select

C

11110I

O

Table 12

blink-select

C

1110A

BF1

BF0

Table 13

Table 8.

C bit description

Bit

Symbol

Value

Description

7C

continue bit

0

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

as display data

1

control bytes continue; next byte will be a command too