PIC16F1933-ESLASHP datasheet(243/418 Pages) MICROCHIP

243 / 418 page

Preliminary

DS41364A-page 241

PIC16F193X/LF193X

21.0

LIQUID CRYSTAL DISPLAY

(LCD) DRIVER MODULE

The Liquid Crystal Display (LCD) driver module

generates the timing control to drive a static or

multiplexed LCD panel. In the PIC16F193X/LF193X

device, the module drives the panels of up to four

commons and up to 24 segments. The LCD module

also provides control of the LCD pixel data.

The LCD driver module supports:

• Direct driving of LCD panel

• Three LCD clock sources with selectable prescaler

• Up to four common pins:

- Static (1 common)

- 1/2 multiplex (2 commons)

- 1/3 multiplex (3 commons)

- 1/4 multiplex (4 commons)

• Segment pins up to:

- 16 (PIC16F1933/1936/1938/

PIC16LF1933/1936/1938)

- 24 (PIC16F1934/1937/1939/

PIC16LF1934/1937/1939)

• Static, 1/2 or 1/3 LCD Bias

21.1

LCD Registers

The module contains the following registers:

• LCD Control register (LCDCON)

• LCD Phase register (LCDPS)

• LCD Reference Ladder register (LCDRL)

• LCD Contrast Control register (LCDCST)

• LCD Reference Voltage Control register

(LCDREF)

• Up to 3 LCD Segment Enable registers (LCDSEn)

• Up to 12 LCD data registers (LCDDATAn)

FIGURE 21-1:

LCD DRIVER MODULE BLOCK DIAGRAM

Note:

COM3 and SEG15 share the same physical

pin on the PIC16F1933/1936/1938/

PIC16LF1933/1936/1938, therefore SEG15

is not available when using 1/4 multiplex

displays.

Data Bus

SEG<23:0>(1, 3)

To I/O Pads(1)

LCDDATAx

Registers

Note

These are not directly connected to the I/O pads, but may be tri-stated, depending on the configuration of

the LCD module.

SEG<23:0> on PIC16F1934/1937/1939, SEG<15:0> on PIC16F1933/1936/1938/

PIC16LF1933/1936/1938.

COM3 and SEG15 share the same physical pin on the PIC16F1933/1936/1938/PIC16LF1933/1936/1938,

therefore SEG15 is not available when using 1/4 multiplex displays.

COM<3:0>(3)

Clock Source

Timing Control

Select and

Prescaler

LFINTOSC

FOSC/256

T1OSC

To I/O Pads(1)

LCDCON

LCDPS

LCDSEn

MUX

PIC16F1933-E/P Datasheet(PDF) 243 Page - Microchip Technology

PIC16F1933-E/P Datasheet(HTML) 243 Page - Microchip Technology

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL