PIC18F67K90-E/PT Microchip Technology, PIC18F67K90-E/PT Datasheet - Page 280
![no-image](/images/manufacturer_photos/0/4/439/microchip_technology_sml.jpg)
PIC18F67K90-E/PT
Manufacturer Part Number
PIC18F67K90-E/PT
Description
128kB Flash, 4kB RAM, 1kB EE, NanoWatt XLP, LCD 64 TQFP 10x10x1mm TRAY
Manufacturer
Microchip Technology
Series
PIC® XLP™ 18Fr
Datasheet
1.PIC18F66K90-IMR.pdf
(570 pages)
Specifications of PIC18F67K90-E/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
53
Program Memory Size
128KB (64K 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 16x12b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
64-TQFP
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC18F67K90-E/PT
Manufacturer:
Microchip Technology
Quantity:
10 000
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PIC18F87K90 FAMILY
20.2
The LCD driver module has three possible clock
sources:
• (F
• SOSC Clock/32
• INTRC/32
The first clock source is the system clock divided by
8,192 ((F
provide about 1 kHz output when the system clock is
8 MHz. The divider is not programmable. Instead, the
LCD prescaler bits, LCDPS<3:0>, are used to set the
LCD frame clock rate.
The second clock source is the SOSC oscillator/32.
This also outputs about 1 kHz when a 32.768 kHz
crystal is used with the SOSC oscillator. To use the
SOSC oscillator as a clock source, set the SOSCEN
(T1CON<3>) bit.
FIGURE 20-2:
DS39957D-page 280
OSC
Crystal Oscillator
/4)/8192
Nom F
System Clock
LF-INTOSC Oscillator
SOSC 32 kHz
OSC
LCD Clock Source Selection
(F
OSC
/4)/8192). This divider ratio is chosen to
RC
/4)
= 31.25 kHz
LCD CLOCK GENERATION
÷8192
÷32
÷32
(LCDCON<3:2>)
CS<1:0>
÷4
÷2
(LCDCON<1:0>)
LMUX<1:0>
QUAD
STAT
TRIP
DUP
The third clock source is a 31.25 kHz internal RC
oscillator/32 that provides approximately 1 kHz output.
The second and third clock sources may be used to
continue running the LCD while the processor is in
Sleep.
These clock sources are selected through the bits
CS<1:0> (LCDCON<3:2>).
20.2.1
A 16-bit counter is available as a prescaler for the LCD
clock. The prescaler is not directly readable or writable.
Its value is set by the LP<3:0> bits (LCDPS<3:0>) that
determines the prescaler assignment and prescale ratio.
Selectable prescale values are from 1:1 through
1:32,768, in power-of-2 increments.
4-Bit Prog Prescaler
LCD PRESCALER
(LCDPS<3:0>)
LP<3:0>
2009-2011 Microchip Technology Inc.
(LCDCON<1:0>)
Ring Counter
LMUX<1:0>
÷1, 2, 3, 4
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