PCF8531USLASH2 datasheet(27/44 Pages) PHILIPS

27 / 44 page

2000 Feb 11

Philips Semiconductors

Product speciﬁcation

× 128 pixel matrix driver

PCF8531

14 APPLICATION INFORMATION

Table 9

Programming example for PCF8531

STEP

SERIAL BUS BYTE

DISPLAY

OPERATION

DB7

DB6

DB5

DB4

DB3

DB2

DB1

DB0

SA0

start; slave address;

R/W=0

control byte; Co = 1; RS = 0

H[1:0] independent

command; select function

and RAM command page

(H[1:0] = 00)

control byte; Co = 1; RS = 0

function and RAM command

page PD = 0 and V = 1

control byte; Co = 1; RS = 0

function and RAM command

page select display setting

command page H[1:0] = 01

control byte; Co = 1; RS = 0

display setting command

page; set normal mode

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

control byte; Co = 1; RS = 0

select Mux rate 1 : 34

control byte; Co = 1; RS = 0

H[2:0] independent

command; select function

and RAM command page

H[1:0] = 00

control byte; Co = 1; RS = 0

function and RAM command

page; select HV-gen

command page H[1:0] = 10

control byte; Co = 1; RS = 0

HV-gen command page;

select voltage multiplication

factor 5 S[1:0] = 11

control byte; Co = 1; RS = 0

HV-gen command page;

select temperature

coefﬁcient 2 TC[2:0] = 010

control byte; Co = 1; RS = 0

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