PCF8576DTSLASHS400SLASH2 datasheet(26/57 Pages) NXP

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PCF8576D

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Product data sheet

Rev. 14 — 10 June 2013

26 of 57

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.

[2]

Default value.

[1]

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

[2]

Default value.

[3]

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

7.13 Display controller

The display controller executes the commands identified by the command decoder. It

contains the device’s status registers and coordinates their effects. The display controller

is also responsible for loading display data into the display RAM in the correct filling order.

Table 15.

Bank-select command bit description

See Section 7.10.5 and Section 7.10.6.

Bit

Symbol

Value

Description

Static

1:2 multiplex[1]

0, 1

see Table 11

6 to 2

11110

fixed value

input bank selection; storage of arriving display data

0[2]

RAM row 0

RAM rows 0 and 1

RAM row 2

RAM rows 2 and 3

output bank selection; retrieval of LCD display data

0[2]

RAM row 0

RAM rows 0 and 1

RAM row 2

RAM rows 2 and 3

Table 16.

Blink-select command bit description

See Section 7.11.

Bit

Symbol

Value

Description

0, 1see Table 11

6 to 3

1110

fixed value

2AB

blink mode selection

0[2]

normal blinking[1]

alternate RAM bank blinking[3]

1 to 0

BF[1:0]

blink frequency selection

00[2]

off

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