PCF8579TSLASH1 datasheet(19/41 Pages) NXP

19 / 41 page

PCF8579_5

Product data sheet

Rev. 05 — 11 May 2009

19 of 41

NXP Semiconductors

PCF8579

LCD column driver for dot matrix graphic displays

[1]

See operation code for set-start-bank in Table 9.

[2]

Values shown in decimal.

[1]

Values shown in decimal.

Table 11.

RAM-access - command bit description

Bit

Symbol

Value

Description

0, 1

see Table 7

6 to 4

111

ﬁxed value

3, 2

G[1:0]

RAM access mode;

deﬁnes the auto-increment behavior of the

address for RAM access (see Figure 17)

character

half-graphic

full-graphic

not allowed[1]

1, 0

Y[1:0]

0 to 3[2]

RAM row address;

two bits of immediate data, transferred to the

Y-address pointer to deﬁne one of four display

RAM rows (see Figure 15)

Table 12.

Load-X-address - command bit description

Bit

Symbol

Value

Description

0, 1

see Table 7

ﬁxed value

5 to 0

X[5:0]

0 to 39[1]

RAM column address;

six bits of immediate data, transferred to the

X-address pointer to deﬁne one of forty display

RAM columns (see Figure 15)

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