PCF8576CUSLASH2 datasheet(28/56 Pages) NXP

28 / 56 page

PCF8576C_9

Product data sheet

Rev. 09 — 9 July 2009

28 of 56

NXP Semiconductors

PCF8576C

Universal LCD driver for low multiplex rates

8.3.4 Bank select command

[1]

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

8.3.5 Blink command

8.4 Display controller

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

contains the status registers of the PCF8576C and coordinates their effects. The

controller is also responsible for loading display data into the display RAM as required by

the ﬁlling order.

Internal circuitry

Table 15.

Bank select command[1]

Bank

Mode

Bit

Value

Static

1:2 multiplex drive mode

Input bank

RAM bit 0

RAM bits 0 and 1

RAM bit 2

RAM bits 2 and 3

Output bank

RAM bit 0

RAM bits 0 and 1

RAM bit 2

RAM bits 2 and 3

Table 16.

Blink frequency command bit description

Blink frequency

Bit

BF1

BF0

off

Table 17.

Blink mode command bit description

Blink mode

Bit A

normal blinking

alternate RAM bank blinking

Fig 20. Device protection diagram

013aaa109

VLCD

VSS

SYNC

CLK, OSC, A0 to A2,

SA0,

VDD

BP0 to BP3,

S0 to S39

SDA, SCL

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