PCF8576CUSLASH12 datasheet(24/44 Pages) PHILIPS

24 / 44 page

1998 Jul 30

Philips Semiconductors

Product speciﬁcation

Universal LCD driver for low multiplex

rates

PCF8576C

Table 5

Deﬁnition of PCF8576C commands

COMMAND

OPCODE

OPTIONS

DESCRIPTION

MODE SET

Table 6

Deﬁnes LCD drive mode.

Table 7

Deﬁnes LCD bias conﬁguration.

Table 8

Deﬁnes display status. The possibility to

disable the display allows implementation

of blinking under external control.

Table 9

Deﬁnes power dissipation mode.

LOAD DATA

POINTER

Table 10

Six bits of immediate data, bits P5 to P0,

are transferred to the data pointer to

deﬁne one of forty display RAM

addresses.

DEVICE

SELECT

1100

Table 11

Three bits of immediate data, bits A0 to

A3, are transferred to the subaddress

counter to deﬁne one of eight hardware

subaddresses.

BANK

SELECT

11110

Table 12

Deﬁnes input bank selection (storage of

arriving display data).

Table 13

Deﬁnes output bank selection (retrieval of

LCD display data).

The BANK SELECT command has no

effect in 1 : 3 and 1 : 4 multiplex drive

modes.

BLINK

1110

BF1 BF0

Table 14

Deﬁnes the blinking frequency.

Table 15

Selects the blinking mode; normal

operation with frequency set by BF1, BF0

or blinking by alternation of display RAM

banks. Alternation blinking does not apply

in 1 : 3 and 1 : 4 multiplex drive modes.

Table 6

Mode set option 1

Table 7

Mode set option 2

LCD DRIVE MODE

BITS

DRIVE

MODE

BACKPLANE

Static

1 BP

1 : 2

MUX (2 BP)

1 : 3

MUX (3 BP)

1 : 4

MUX (4 BP)

LCD BIAS

BIT B

⁄3bias

⁄2bias

Table 8

Mode set option 3

Table 9

Mode set option 4

DISPLAY STATUS

BIT E

Disabled (blank)

Enabled

MODE

BIT LP

Normal mode

Power-saving mode

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