PCF8576DTSLASHS400SLASH2 datasheet(26/52 Pages) NXP

26 / 52 page

PCF8576D_9

Product data sheet

Rev. 09 — 25 August 2009

26 of 52

NXP Semiconductors

PCF8576D

Universal LCD driver for low multiplex rates

[1]

The bank-select command has no effect in 1:3 and 1:4 multiplex drive modes.

[1]

Normal blinking is assumed when the LCD multiplex drive modes 1:3 or 1:4 are selected.

[2]

Alternating RAM bank blinking does not apply in 1:3 and 1:4 multiplex drive modes.

Table 10.

Load-data-pointer command bits description

Bit

Symbol

Value

Description

0, 1

see Table 8

ﬁxed value

5 to 0

P[5:0]

000000 to

100111

6 bit binary value, 0 to 39; transferred to the data pointer to

deﬁne one of forty display RAM addresses

Table 11.

Device-select command bits description

Bit

Symbol

Value

Description

0, 1

see Table 8

6 to 3

1100

ﬁxed value

2 to 0

A[2:0]

000 to 111

3 bit binary value, 0 to 7; transferred to the subaddress

counter to deﬁne one of eight hardware subaddresses

Table 12.

Bank-select command bits description

Bit

Symbol

Value

Description

Static

1:2 multiplex[1]

0, 1

see Table 8

6 to 2

11110

ﬁxed value

input bank selection; storage of arriving display data

RAM bit 0

RAM bits 0 and 1

RAM bit 2

RAM bits 2 and 3

output bank selection; retrieval of LCD display data

RAM bit 0

RAM bits 0 and 1

RAM bit 2

RAM bits 2 and 3

Table 13.

Blink-select command bits description

Bit

Symbol

Value

Description

0, 1

see Table 8

6 to 3

1110

ﬁxed value

blink mode selection

normal blinking[1]

alternate RAM bank blinking[2]

1 to 0

BF[1:0]

blink frequency selection

off

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