PCF8820U datasheet(39/60 Pages) PHILIPS

39 / 60 page

2000 Dec 07

Philips Semiconductors

Product speciﬁcation

× 101 Grey-scale/ECB colour dot matrix

LCD driver

PCF8820

10010100

grey-scale/colour command page:

set grey-scale to 20

(GS5 to GS0 = 010100)

10000000

control byte: Co = 1, RS = 0

01000010

grey-scale/colour command page:

select grey-scale register 2

(GR1 to GR0 = 10)

10000000

control byte: Co = 1, RS = 0

10101000

grey-scale/colour command page:

set grey-scale register 2 to 40

(GS5 to GS0 = 101000)

10000000

control byte: Co = 1, RS = 0

01000011

grey-scale/colour command page:

select grey-scale register 3

(GR1 to GR0 = 11)

10000000

control byte: Co = 1, RS = 0

10111111

grey-scale/colour command page:

set grey-scale register 3 to 63

(GS5 to GS0 = 111111)

10000000

control byte: Co = 1, RS = 0

00000001

H2 to H0 independent command:

select function and RAM command

page (H2 to H0 = 000)

10000000

control byte: Co = 1, RS = 0

00001010

function and RAM command page:

select HVGen command page

(H2 to H0 = 010)

10000000

control byte: Co = 1, RS = 0

00000101

HVGen command page: enable

HVGen (HVE = 1) and select LOW

VLCD programming range

(PRS = 0)

10000000

control byte: Co = 1, RS = 0

00000001

H2 to H0 independent command:

select function and RAM command

page (H2 to H0 = 000)

10000000

control byte: Co = 1, RS = 0

00010010

function and RAM command page:

select normal operation (PD = 0)

and vertical address mode (V = 1)

10000000

control byte: Co = 1, RS = 0

00001010

function and RAM command page:

select HVGen command page

(H2 to H0 = 010)

STEP

SERIAL BUS BYTE

LCD

OPERATION

DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0

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