PCF8576DTSLASH2 datasheet(26/52 Pages) NXP

26 / 52 page

PCF8576D_7

Product data sheet

Rev. 7 — 18 December 2008

26 of 52

NXP Semiconductors

PCF8576D

Universal LCD driver for low multiplex rates

[1]

The possibility to disable the display allows implementation of blinking under external control.

Table 9.

Mode-set command bits description

Bit

Symbol

Value

Description

0, 1

see Table 8

6, 5

ﬁxed value

unused

display status

disabled (blank)[1]

enabled

LCD bias conﬁguration

⁄

3 bias

⁄

2 bias

1 to 0

M[1:0]

LCD drive mode selection

static; BP0

1:2 multiplex; BP0, BP1

1:3 multiplex; BP0, BP1, BP2

1:4 multiplex; BP0, BP1, BP2, BP3

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

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