PCF8531 datasheet(42/51 Pages) NXP

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PCF8531

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Product data sheet

Rev. 05 — 10 August 2010

42 of 51

NXP Semiconductors

PCF8531

34 x 128 pixel matrix driver

15.6 Programming example

Table 17.

Programming example for PCF8531

Step

Serial bus byte

Display

Operation

DB7

DB6

DB5

DB4

DB3

DB2

DB1

DB0

0111

10SA0

start; slave address; R/W =0

1000

0000

control byte; Co = 1; RS = 0

0000

0001

H[1:0] independent

command; select function

and RAM command page

(H[1:0] = 00)

1000

0000

control byte; Co = 1; RS = 0

0010

function and RAM command

page PD = 0 and V = 1

1000

0000

control byte; Co = 1; RS = 0

0000

1001

function and RAM command

page select display setting

command page H[1:0] = 01

1000

0000

control byte; Co = 1; RS = 0

0000

1100

display setting command

page; set normal mode

(D = 1; IM = 0 and E = 0)

1000

0000

control byte; Co = 1; RS = 0

0000

0101

select multiplex rate 1:34

1000

0000

control byte; Co = 1; RS = 0

0000

0001

H[2:0] independent

command; select function

and RAM command page

H[1:0] = 00

1000

0000

control byte; Co = 1; RS = 0

0000

1010

function and RAM command

page; select HV-gen

command page H[1:0] = 10

1000

0000

control byte; Co = 1; RS = 0

0000

1011

HV-gen command page;

select voltage multiplication

factor 5 S[1:0] = 11

1000

0000

control byte; Co = 1; RS = 0

0010

HV-gen command page;

select temperature

coefficient 2 TC[2:0] = 010

1000

0000

control byte; Co = 1; RS = 0

0000

0111

HV-gen command page;

select high VLCD

programming range

(PRS = 1); voltage multiplier

off (HVE = 1)

1000

0000

control byte; Co = 1; RS = 0

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