MA240029 Microchip Technology, MA240029 Datasheet - Page 265

• Manufacturer Part Number: MA240029
• Description: Daughter Cards & OEM Boards PIC24FJ128GA310 Gen Purpose PIM
• Manufacturer: Microchip Technology

Specifications of MA240029

• Rohs: yes
• Product: Daughter Cards
• Core: PIC
• Description/function: Plug-in module
• Interface Type: I2C, SPI
• Tool Is For Evaluation Of: PIC24FJ128GA310
• For Use With: Explorer 16 Development Board

21.0
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
(PIC24FJXXXGA310), the module can drive panels of
up to eight commons and up to 60 segments when 5 to
8 commons are used, or up to 64 segments when 1 to
4 commons are used.
FIGURE 21-1:
 2010-2011 Microchip Technology Inc.
Note:
(Secondary Oscillator)
LPRC Oscillator
FRC Oscillator
LIQUID CRYSTAL DISPLAY
(LCD) CONTROLLER
Section 52. “Liquid Crystal Display
This data sheet summarizes the features of
this group of PIC24F devices. It is not
intended to be a comprehensive reference
source. For more information, refer to the
“PIC24F
(LCD)” (DS39740). The information in this
data sheet supersedes the information in
the FRM.
Data Bus
16
SOSC
Family
LCD CONTROLLER MODULE BLOCK DIAGRAM
32 x 16 (= 8 x 64)
Timing Control
Source Select
Reference
LCDDATA31
LCDDATA30
LCD DATA
LCDDATA1
LCDDATA0
LCD Clock
LCDCON
LCDSEx
LCDPS
.
.
.
Manual”,
PIC24FJ128GA310 FAMILY
LCD Bias Generation
MUX
512
64
to
Resistor Ladder
Charge Pump
LCDREG
LCDREF
The module has these features:
• Direct driving of LCD panel
• Three LCD clock sources with selectable prescaler
• Up to eight commons:
• Ability to drive from 30 (in 64-pin devices) to
• Static, 1/2 or 1/3 LCD bias
• On-chip bias generator with dedicated charge
• Internal resistors for bias voltage generation
• Software contrast control for LCD using internal
A simplified block diagram of the module is shown in
Figure
LCD
- Static (One common)
- 1/2 multiplex (two commons)
- 1/3 multiplex (three commons)
- 1/8 multiplex (eight commons)
64 (100-pin) segments, depending on the
Multiplexing mode selected
pump to support a range of fixed and variable bias
options
biasing
8
64
21-1.
Voltage
Bias
SEG<63:0>
COM<7:0>
DS39996F-page 265
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