PCF8531U datasheet(39/44 Pages) NXP

39 / 44 page

PCF8531_4

Product data sheet

Rev. 04 — 13 June 2008

39 of 44

NXP Semiconductors

PCF8531

34 x 128 pixel matrix driver

10000000

control byte; Co = 1; RS = 0

00000001

H[1:0] independent

command; select function

and RAM command page

H[1:0] = 00

10000000

control byte; Co = 1; RS = 0

00001001

function and RAM command

page; select display setting

command page H[1:0] = 01

10000000

control byte; Co = 1; RS = 0

00000001

H[1:0] independent

command; select function

and RAM command page

H[1:0] = 00

10000000

control byte; Co = 1; RS = 0

00001101

display control; set inverse

video mode (D = 1; E = 1

and IM = 0)

10000000

control byte; Co = 1; RS = 0

10000000

set X address of RAM; set

address to ‘0000000’

01000000

control byte; Co = 0; RS = 1

00000000

data write

Table 17.

Programming example for PCF8531 …continued

Step

Serial bus byte

Display

Operation

DB7

DB6

DB5

DB4

DB3

DB2

DB1

DB0

mgs411

mgs412

mgs414

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