PIC18F4331-E/PT Microchip Technology, PIC18F4331-E/PT Datasheet - Page 30
PIC18F4331-E/PT
Manufacturer Part Number
PIC18F4331-E/PT
Description
IC MCU FLASH 4KX16 44TQFP
Manufacturer
Microchip Technology
Series
PIC® 18Fr
Datasheets
1.PIC16F616T-ISL.pdf
(8 pages)
2.PIC16F818-ISO.pdf
(6 pages)
3.PIC18F2331-ISO.pdf
(392 pages)
4.PIC18F2331-ISO.pdf
(8 pages)
5.PIC18F2331-ISO.pdf
(6 pages)
6.PIC18F2331-ISO.pdf
(16 pages)
7.PIC18LF2331-ISO.pdf
(40 pages)
8.PIC18F4331-EP.pdf
(400 pages)
Specifications of PIC18F4331-E/PT
Core Size
8-Bit
Program Memory Size
8KB (4K x 16)
Core Processor
PIC
Speed
40MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, LVD, Power Control PWM, QEI, POR, PWM, WDT
Number Of I /o
36
Program Memory Type
FLASH
Eeprom Size
256 x 8
Ram Size
768 x 8
Voltage - Supply (vcc/vdd)
4.2 V ~ 5.5 V
Data Converters
A/D 9x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
44-TQFP, 44-VQFP
Controller Family/series
PIC18
No. Of I/o's
36
Eeprom Memory Size
256Byte
Ram Memory Size
768Byte
Cpu Speed
40MHz
No. Of Timers
4
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
I3-DB18F4431 - BOARD DAUGHTER ICEPIC3
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC18F4331-E/PT
Manufacturer:
Microchip Technology
Quantity:
10 000
- PIC16F616T-ISL PDF datasheet
- PIC16F818-ISO PDF datasheet #2
- PIC18F2331-ISO PDF datasheet #3
- PIC18F2331-ISO PDF datasheet #4
- PIC18F2331-ISO PDF datasheet #5
- PIC18F2331-ISO PDF datasheet #6
- PIC18LF2331-ISO PDF datasheet #7
- PIC18F4331-EP PDF datasheet #8
- Current page: 30 of 392
- Download datasheet (4Mb)
PIC18F2331/2431/4331/4431
TABLE 3-2:
DS39616D-page 30
Capacitor values are for design guidance only.
These capacitors were tested with the crystals listed
below for basic start-up and operation. These values
are not optimized.
Different capacitor values may be required to produce
acceptable oscillator operation. The user should test
the performance of the oscillator over the expected
V
See the notes following this table for additional
information.
Osc Type
DD
Note 1: Higher
HS
XT
LP
and temperature range for the application.
200 kHz
2: When operating below 3V V
3: Since each resonator/crystal has its own
4: Rs may be required to avoid overdriving
5: Always verify oscillator performance over
32 kHz
1 MHz
stability of oscillator, but also increases
the start-up time.
using certain ceramic resonators at any
voltage, it may be necessary to use the
HS mode or switch to a crystal oscillator.
characteristics, the user should consult
the resonator/crystal manufacturer for
appropriate
components.
crystals with low drive level specification.
the V
expected for the application.
200 kHz
20 MHz
Crystal
32 kHz
1 MHz
4 MHz
4 MHz
8 MHz
Freq
CAPACITOR SELECTION FOR
CRYSTAL OSCILLATOR
DD
Crystals Used:
and temperature range that is
capacitance
Typical Capacitor Values
values
33 pF
15 pF
33 pF
27 pF
27 pF
22 pF
15 pF
C1
Tested:
20 MHz
4 MHz
8 MHz
increases
of
DD
, or when
33 pF
15 pF
33 pF
27 pF
27 pF
22 pF
15 pF
external
C2
the
An external clock source may also be connected to the
OSC1 pin in the HS mode, as shown in
FIGURE 3-2:
3.3
A Phase Locked Loop (PLL) circuit is provided as an
option for users who wish to use a lower frequency
oscillator circuit or to clock the device up to its highest
rated frequency from a crystal oscillator. This may be
useful for those concerned with EMI from high-
frequency crystals or users requiring higher clock
speeds from an internal oscillator.
3.3.1
The HSPLL mode uses the HS Oscillator mode for
frequencies up to 10 MHz. A PLL circuit then multiplies
the oscillator output frequency by four to produce an
internal clock frequency up to 40 MHz. The PLLEN bit
is not available in this oscillator mode.
The PLL is only available to the crystal oscillator when
the FOSC<3:0> Configuration bits are programmed for
HSPLL mode (‘0110’).
FIGURE 3-3:
Clock from
Ext. System
OSC2
OSC1
PLL Frequency Multiplier
(from Configuration Register 1H)
HS Mode
HSPLL OSCILLATOR MODE
Crystal
Osc
Open
HS Osc Enable
PLL Enable
F
F
4
IN
OUT
EXTERNAL CLOCK INPUT
OPERATION (HS OSC
CONFIGURATION)
PLL BLOCK DIAGRAM
2010 Microchip Technology Inc.
Comparator
OSC1
OSC2
Loop
Filter
Phase
VCO
PIC18FXXXX
(HS Mode)
Figure
SYSCLK
3-2.
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