PIC24FJ128GC010 Datasheet, PDF (315/472 Pages) Microchip Technology – 16-Bit Flash Microcontrollers with 12-Bit Pipeline A/D, Sigma-Delta A/D, USB On-The-Go and XLP Technology

PIC24FJ128GC010 FAMILY
22.0 LIQUID CRYSTAL DISPLAY
(LCD) CONTROLLER
Note:
This data sheet summarizes the features
of the PIC24FJ128GC010 family of
devices. It is not intended to be a compre-
hensive reference source. To complement
the information in this data sheet, refer to
the “PIC24F Family Reference Manual”,
“Liquid Crystal Display (LCD)”
(DS39740) which is available from the
Microchip web site (www.microchip.com).
The Liquid Crystal Display (LCD) controller generates
the data and timing control required to directly drive a
static or multiplexed LCD panel. In 100-pin devices
(PIC24FJXXXGC010), the module can drive panels of
up to eight commons and up to 59 segments when 5 to
8 commons are used, or up to 63 segments when 1 to
4 commons are used.
The module has these features:
• Direct driving of LCD panel
• Three LCD clock sources with selectable prescaler
• Up to eight commons:
- Static (one common)
- 1/2 multiplex (two commons)
- 1/3 multiplex (three commons)
- 1/8 multiplex (eight commons)
• Ability to drive from 29 (in 64-pin devices) to
63 (100/121-pin) segments, depending on the
Multiplexing mode selected
• Static, 1/2 or 1/3 LCD bias
• On-chip bias generator with dedicated charge
pump to support a range of fixed and variable bias
options
• Internal resistors for bias voltage generation
• Software contrast control for LCD using internal
biasing
A simplified block diagram of the module is shown in
Figure 22-1.
FIGURE 22-1:
LCD CONTROLLER MODULE BLOCK DIAGRAM
Data Bus
16
LCD DATA
32 x 16 (= 8 x 64)
LCDDATA31
LCDDATA30
...
LCDDATA1
LCDDATA0
512
to
64
64
MUX
SEG<62:0>
Timing Control
LCDCON
LCDPS
LCDSEx
FRC Oscillator
LPRC Oscillator
SOSC
(Secondary Oscillator)
LCD Clock
Source Select
Bias
Voltage
8
LCD Bias Generation
LCDREG
LCDREF
Resistor Ladder
LCD
Charge Pump
To I/O Pins
COM<7:0>
 2012-2013 Microchip Technology Inc.
DS30009312B-page 315