PC85133-1(2009) 查看數據表（PDF） - NXP Semiconductors.

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PC85133-1
(Rev.:2009)

Universal LCD driver for low multiplex rates

NXP Semiconductors. 

NXP Semiconductors

PCF85133

Universal LCD driver for low multiplex rates

7. Functional description

The PCF85133 is a versatile peripheral device designed to interface between any

microprocessor or microcontroller to a wide variety of LCDs. It can directly drive any static

or multiplexed LCD containing up to four backplanes and up to 80 segments.

The display configurations possible with the PCF85133 depend on the required number of

active backplane outputs. A selection of display configurations is shown in Table 4.

All of the display configurations can be implemented in a typical system as shown in

Figure 3.

Table 4. Possible display configurations

Number of

7-segment numeric

Backplanes Elements

Digits

Indicator

symbols

4

320

40

40

3

240

30

30

2

160

20

20

1

80

10

10

14-segment numeric

Characters Indicator

symbols

20

40

16

16

10

20

5

10

Dot matrix

320 (4 × 80)

240 (3 × 80)

160 (2 × 80)

80 (1 × 80)

VDD

R

≤

tr

2Cb

HOST

MICRO-

PROCESSOR/

MICRO-

CONTROLLER

SDAACK

SDA

SCL

OSC

FF

VDD VLCD

PCF85133

80 segment drives

LCD PANEL

4 backplanes

(up to 320

elements)

A0 A1 A2 SA0 VSS

VSS

001aaj582

Fig 3. Typical system configuration

The host microprocessor or microcontroller maintains the 2-line I2C-bus communication

channel with the PCF85133.

The internal oscillator is selected by connecting pin OSC to VSS. The only other

connections required to complete the system are the power supplies (VDD, VSS and VLCD)

and the LCD panel selected for the application.

PCF85133_1

Product data sheet

Rev. 1 — 17 February 2009

© NXP B.V. 2009. All rights reserved.

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