PIC18LF4550-I/PT Microchip Technology, PIC18LF4550-I/PT Datasheet - Page 28
![IC PIC MCU FLASH 16KX16 44TQFP](/photos/6/82/68251/c04-076_pt_sml.jpg)
PIC18LF4550-I/PT
Manufacturer Part Number
PIC18LF4550-I/PT
Description
IC PIC MCU FLASH 16KX16 44TQFP
Manufacturer
Microchip Technology
Series
PIC® 18Fr
Datasheets
1.PIC16F616T-ISL.pdf
(8 pages)
2.PCM18XR1.pdf
(438 pages)
3.PIC18F2221-ISO.pdf
(46 pages)
4.PIC18F2455-ISO.pdf
(14 pages)
5.PIC18F2455-ISO.pdf
(8 pages)
6.PIC18F2455-ISO.pdf
(26 pages)
7.PIC18F4550-IP.pdf
(430 pages)
8.PIC18LF2455-ISO.pdf
(430 pages)
Specifications of PIC18LF4550-I/PT
Program Memory Type
FLASH
Program Memory Size
32KB (16K x 16)
Package / Case
44-TQFP, 44-VQFP
Core Processor
PIC
Core Size
8-Bit
Speed
48MHz
Connectivity
I²C, SPI, UART/USART, USB
Peripherals
Brown-out Detect/Reset, HLVD, POR, PWM, WDT
Number Of I /o
35
Eeprom Size
256 x 8
Ram Size
2K x 8
Voltage - Supply (vcc/vdd)
2 V ~ 5.5 V
Data Converters
A/D 13x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Processor Series
PIC18LF
Core
PIC
Data Bus Width
8 bit
Data Ram Size
2 KB
Interface Type
SPI/I2C/EAUSART
Maximum Clock Frequency
48 MHz
Number Of Programmable I/os
35
Number Of Timers
4
Operating Supply Voltage
2 V to 5.5 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
52715-96, 52716-328, 52717-734, 52712-325, EWPIC18
Development Tools By Supplier
PG164130, DV164035, DV244005, DV164005, PG164120, ICE2000, ICE4000, DV164136, DM163022
Minimum Operating Temperature
- 40 C
On-chip Adc
13-ch x 10-bit
Package
44TQFP
Device Core
PIC
Family Name
PIC18
Maximum Speed
48 MHz
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC18LF4550-I/PT
Manufacturer:
TI
Quantity:
4 300
Company:
Part Number:
PIC18LF4550-I/PT
Manufacturer:
Microchip Technology
Quantity:
10 000
- PIC16F616T-ISL PDF datasheet
- PCM18XR1 PDF datasheet #2
- PIC18F2221-ISO PDF datasheet #3
- PIC18F2455-ISO PDF datasheet #4
- PIC18F2455-ISO PDF datasheet #5
- PIC18F2455-ISO PDF datasheet #6
- PIC18F4550-IP PDF datasheet #7
- PIC18LF2455-ISO PDF datasheet #8
- Current page: 28 of 430
- Download datasheet (7Mb)
PIC18F2455/2550/4455/4550
FIGURE 2-3:
2.2.3
The EC, ECIO, ECPLL and ECPIO Oscillator modes
require an external clock source to be connected to the
OSC1 pin. There is no oscillator start-up time required
after a Power-on Reset or after an exit from Sleep
mode.
In the EC and ECPLL Oscillator modes, the oscillator
frequency divided by 4 is available on the OSC2 pin.
This signal may be used for test purposes or to
synchronize other logic. Figure 2-4 shows the pin
connections for the EC Oscillator mode.
FIGURE 2-4:
The ECIO and ECPIO Oscillator modes function like the
EC and ECPLL modes, except that the OSC2 pin
becomes an additional general purpose I/O pin. The I/O
pin becomes bit 6 of PORTA (RA6). Figure 2-5 shows
the pin connections for the ECIO Oscillator mode.
FIGURE 2-5:
The internal postscaler for reducing clock frequency in
XT and HS modes is also available in EC and ECIO
modes.
DS39632D-page 26
Clock from
Ext. System
Clock from
Ext. System
Clock from
Ext. System
EXTERNAL CLOCK INPUT
F
Open
OSC
RA6
/4
EXTERNAL CLOCK INPUT
OPERATION (HS OSC
CONFIGURATION)
EXTERNAL CLOCK
INPUT OPERATION
(EC AND ECPLL
CONFIGURATION)
EXTERNAL CLOCK
INPUT OPERATION
(ECIO AND ECPIO
CONFIGURATION)
OSC1
OSC2
OSC1/CLKI
OSC2/CLKO
OSC1/CLKI
I/O (OSC2)
PIC18FXXXX
PIC18FXXXX
PIC18FXXXX
(HS Mode)
Preliminary
2.2.4
PIC18F2455/2550/4255/4550 devices include a Phase
Locked Loop (PLL) circuit. This is provided specifically
for USB applications with lower speed oscillators and
can also be used as a microcontroller clock source.
The PLL is enabled in HSPLL, XTPLL, ECPLL and
ECPIO Oscillator modes. It is designed to produce a
fixed 96 MHz reference clock from a fixed 4 MHz input.
The output can then be divided and used for both the
USB and the microcontroller core clock. Because the
PLL has a fixed frequency input and output, there are
eight prescaling options to match the oscillator input
frequency to the PLL.
There is also a separate postscaler option for deriving
the microcontroller clock from the PLL. This allows the
USB peripheral and microcontroller to use the same
oscillator input and still operate at different clock
speeds. In contrast to the postscaler for XT, HS and EC
modes, the available options are 1/2, 1/3, 1/4 and 1/6
of the PLL output.
The HSPLL, ECPLL and ECPIO modes make use of
the HS mode oscillator for frequencies up to 48 MHz.
The prescaler divides the oscillator input by up to 12 to
produce the 4 MHz drive for the PLL. The XTPLL mode
can only use an input frequency of 4 MHz which drives
the PLL directly.
FIGURE 2-6:
HS/EC/ECIO/XT Oscillator Enable
OSC2
OSC1
(from CONFIG1H Register)
Oscillator
Prescaler
PLL FREQUENCY MULTIPLIER
and
F
F
PLL Enable
÷24
IN
OUT
PLL BLOCK DIAGRAM
(HS MODE)
© 2007 Microchip Technology Inc.
Comparator
Phase
Loop
Filter
VCO
SYSCLK
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