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PDF PIC18F44K20 Data sheet ( Hoja de datos )
| Número de pieza | PIC18F44K20 | |
| Descripción | (PIC18FxxK20) 28/40/44-Pin Flash Microcontrollers | |
| Fabricantes | Microchip Technology | |
| Logotipo |  |
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PIC18F23K20/24K20/25K20/26K20/
43K20/44K20/45K20/46K20
Data Sheet
28/40/44-Pin Flash Microcontrollers
with nanoWatt XLP™ Technology
© 2009 Microchip Technology Inc.
Preliminary
DS41303E
1 page  
Pin Diagrams
28-pin PDIP, SOIC, SSOP
MCLR/VPP/RE3
RA0/AN0/C12IN0-
RA1/AN1/C12IN1-
RA2/AN2/VREF-/CVREF/C2IN+
RA3/AN3/VREF+/C1IN+
RA4/T0CKI/C1OUT
RA5/AN4/SS/HLVDIN/C2OUT
VSS
OSC1/CLKIN/RA7
OSC2/CLKOUT/RA6
RC0/T1OSO/T13CKI
RC1/T1OSI/CCP2(1)
RC2/CCP1/P1A
RC3/SCK/SCL
40-pin PDIP
MCLR/VPP/RE3
RA0/AN0/C12IN0-
RA1/AN1/C12IN1-
RA2/AN2/VREF-/CVREF/C2IN+
RA3/AN3/VREF+/C1IN+
RA4/T0CKI/C1OUT
RA5/AN4/SS/HLVDIN/C2OUT
RE0/RD/AN5
RE1/WR/AN6
RE2/CS/AN7
VDD
VSS
OSC1/CLKIN/RA7
OSC2/CLKOUT/RA6
RC0/T1OSO/T13CKI
RC1/T1OSI/CCP2(1)
RC2/CCP1/P1A
RC3/SCK/SCL
RD0/PSP0
RD1/PSP1
28-pin QFN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
PIC18F2XK20/4XK20
28 RB7/KBI3/PGD
27 RB6//KBI2/PGC
26 RB5/KBI1/PGM
25 RB4/KBI0/AN11/P1D
24 RB3/AN9/C12IN2-/CCP2(1)
23 RB2/INT2/AN8/P1B
22 RB1/INT1/AN10/C12IN3-/P1C
21 RB0/INT0/FLT0/AN12
20 VDD
19 VSS
18 RC7/RX/DT
17 RC6/TX/CK
16 RC5/SDO
15 RC4/SDI/SDA
40 RB7/KBI3/PGD
39 RB6/KBI2/PGC
38 RB5/KBI1/PGM
37 RB4/KBI0/AN11
36 RB3/AN9/C12IN2-/CCP2(1)
35 RB2/INT2/AN8
34 RB1/INT1/AN10/C12IN3-
33 RB0/INT0/FLT0/AN12
32 VDD
31 VSS
30 RD7/PSP7/P1D
29 RD6/PSP6/P1C
28 RD5/PSP5/P1B
27 RD4/PSP4
26 RC7/RX/DT
25 RC6/TX/CK
24 RC5/SDO
23 RC4/SDI/SDA
22 RD3/PSP3
21 RD2/PSP2
RA2/AN2/VREF-/CVREF/C2IN+
RA3/AN3/VREF+/C1IN+
RA4/T0CKI/C1OUT
RA5/AN4/SS/HLVDIN/C2OUT
VSS
OSC1/CLKIN/RA7
OSC2/CLKOUT/RA6
28 27 26 25 24 23 22
1 21
2 PIC18F23K20 20
3 PIC18F24K20 19
4
5
PIC18F25K20
18
17
6 PIC18F26K20 16
7 15
8 9 10 11 12 13 14
RB3/AN9/C12IN2-/CCP2(1)
RB2/INT2/AN8/P1B
RB1/INT1/AN10/C12IN3-/P1C
RB0/INT0/FLT0/AN12
VDD
VSS
RC7/RX/DT
Note 1: RB3 is the alternate pin for CCP2 multiplexing.
© 2008 Microchip Technology Inc.
Preliminary
DS41303E-page 3
5 Page 
1.0 DEVICE OVERVIEW
This document contains device specific information for
the following devices:
• PIC18F23K20
• PIC18F24K20
• PIC18F25K20
• PIC18F26K20
• PIC18F43K20
• PIC18F44K20
• PIC18F45K20
• PIC18F46K20
This family offers the advantages of all PIC18
microcontrollers – namely, high computational
performance at an economical price – with the addition
of high-endurance, Flash program memory. On top of
these features, the PIC18F2XK20/4XK20 family
introduces design enhancements that make these
microcontrollers a logical choice for many high-
performance, power sensitive applications.
1.1 New Core Features
1.1.1 nanoWatt TECHNOLOGY
All of the devices in the PIC18F2XK20/4XK20 family
incorporate a range of features that can significantly
reduce power consumption during operation. Key
items include:
• Alternate Run Modes: By clocking the controller
from the Timer1 source or the internal oscillator
block, power consumption during code execution
can be reduced by as much as 90%.
• Multiple Idle Modes: The controller can also run
with its CPU core disabled but the peripherals still
active. In these states, power consumption can be
reduced even further, to as little as 4% of normal
operation requirements.
• On-the-fly Mode Switching: The power-
managed modes are invoked by user code during
operation, allowing the user to incorporate power-
saving ideas into their application’s software
design.
• Low Consumption in Key Modules: The
power requirements for both Timer1 and the
Watchdog Timer are minimized. See
Section 26.0 “Electrical Characteristics”
for values.
PIC18F2XK20/4XK20
1.1.2
MULTIPLE OSCILLATOR OPTIONS
AND FEATURES
All of the devices in the PIC18F2XK20/4XK20 family
offer ten different oscillator options, allowing users a
wide range of choices in developing application
hardware. These include:
• Four Crystal modes, using crystals or ceramic
resonators
• Two External Clock modes, offering the option of
using two pins (oscillator input and a divide-by-4
clock output) or one pin (oscillator input, with the
second pin reassigned as general I/O)
• Two External RC Oscillator modes with the same
pin options as the External Clock modes
• An internal oscillator block which contains a
16 MHz HFINTOSC oscillator and a 31 kHz
LFINTOSC oscillator which together provide 8
user selectable clock frequencies, from 31 kHz to
16 MHz. This option frees the two oscillator pins
for use as additional general purpose I/O.
• A Phase Lock Loop (PLL) frequency multiplier,
available to both the high-speed crystal and inter-
nal oscillator modes, which allows clock speeds of
up to 64 MHz. Used with the internal oscillator, the
PLL gives users a complete selection of clock
speeds, from 31 kHz to 64 MHz – all without using
an external crystal or clock circuit.
Besides its availability as a clock source, the internal
oscillator block provides a stable reference source that
gives the family additional features for robust
operation:
• Fail-Safe Clock Monitor: This option constantly
monitors the main clock source against a refer-
ence signal provided by the LFINTOSC. If a clock
failure occurs, the controller is switched to the
internal oscillator block, allowing for continued
operation or a safe application shutdown.
• Two-Speed Start-up: This option allows the
internal oscillator to serve as the clock source
from Power-on Reset, or wake-up from Sleep
mode, until the primary clock source is available.
© 2009 Microchip Technology Inc.
Preliminary
DS41303E-page 9
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet PIC18F44K20.PDF ] | |
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