PIC18F6490-E/PT Microchip Technology, PIC18F6490-E/PT Datasheet - Page 259

• Manufacturer Part Number: PIC18F6490-E/PT
• Description: IC PIC MCU FLASH 16KX16 64TQFP
• Manufacturer: Microchip Technology
• Series: PIC® 18Fr

Specifications of PIC18F6490-E/PT

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, HLVD, LCD, POR, PWM, WDT
• Number Of I /o: 50
• Program Memory Size: 16KB (8K x 16)
• Program Memory Type: FLASH
• Ram Size: 768 x 8
• Voltage - Supply (vcc/vdd): 4.2 V ~ 5.5 V
• Data Converters: A/D 12x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 64-TFQFP
• For Use With: DM163028 - BOARD DEMO PICDEM LCD
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

22.0
The Liquid Crystal Display (LCD) driver module
generates the timing control to drive a static or
multiplexed LCD panel. In the 80-pin devices
(PIC18F8390/8490), the module drives the panels of
up to four commons and up to 48 segments and in the
64-pin devices (PIC18F6390/6490), the module drives
the panels of up to four commons and up to
32 segments. It also provides control of the LCD pixel
data.
FIGURE 22-1:
© 2007 Microchip Technology Inc.
LIQUID CRYSTAL DISPLAY
(LCD) DRIVER MODULE
Data Bus
F
T13CKI
INTRC Oscillator
LCD DRIVER MODULE BLOCK DIAGRAM
OSC
/4
Timing Control
Clock Source
LCDDATAx
Select and
(= 4 x 48)
Prescaler
Registers
LCDCON
LCDSEx
LCDPS
24 x 8
PIC18F6390/6490/8390/8490
192-to-48
MUX
The LCD driver module supports:
• Direct driving of LCD panel
• Three LCD clock sources with selectable prescaler
• Up to four commons:
• Up to 48 (in 80-pin devices)/32 (in 64-pin devices)
• Static, 1/2 or 1/3 LCD bias
A simplified block diagram of the module is shown in
Figure 22-1.
- Static
- 1/2 multiplex
- 1/3 multiplex
- 1/4 multiplex
segments
COM3:COM0
SE<47:0>
To I/O Pads
To I/O Pads
DS39629C-page 257