PIC18F86K90-I/PT Microchip Technology, PIC18F86K90-I/PT Datasheet - Page 271

• Manufacturer Part Number: PIC18F86K90-I/PT
• Description: 64kB Flash, 4kB RAM, 1kB EE, 16MIPS, NanoWatt XLP, LCD, 5V 80 TQFP 12x12x1mm TRA
• Manufacturer: Microchip Technology
• Series: PIC® XLP™ 18Fr

Specifications of PIC18F86K90-I/PT

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 64MHz
• Connectivity: I²C, LIN, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, LCD, POR, PWM, WDT
• Number Of I /o: 69
• Program Memory Size: 64KB (32K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 1K x 8
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 24x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 80-TQFP
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

20.0
The Liquid Crystal Display (LCD) driver module
generates the timing control to drive a static or
multiplexed LCD panel. In the 80-pin devices
(PIC18F8XK90), the module drives the panels of up to
four commons and up to 48 segments and in the 64-pin
devices (PIC18F6XK90), the module drives the panels
of up to four commons and up to 33 segments. It also
provides control of the LCD pixel data.
FIGURE 20-1:
 2010 Microchip Technology Inc.
LIQUID CRYSTAL DISPLAY
(LCD) DRIVER MODULE
F
SOSC
LF-INTOSC Oscillator
OSC
Data Bus
LCD DRIVER MODULE BLOCK DIAGRAM
/4
Timing Control
Clock Source
LCDDATAx
Select and
Prescaler
Registers
(= 4 x 48)
LCDCON
LCDSEx
LCDPS
24 x 8
Preliminary
PIC18F87K90 FAMILY
192-to-48
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
• Static, 1/2 or 1/3 LCD bias
• Internal resistors for bias voltage generation
• Software contrast control for LCD using the
A simplified block diagram of the module is shown in
Figure 20-1.
MUX
- Static (One common)
- 1/2 multiplex (two commons)
- 1/3 multiplex (three commons)
- 1/4 multiplex (four commons)
devices) segments
internal biasing
COM<3:0>
SE<47:0>
To I/O Pads
To I/O Pads
DS39957B-page 271