PIC18F45K80-I Datasheet, PDF (45/622 Pages) Microchip Technology – 28/40/44/64-Pin, Enhanced Flash Microcontrollers with ECAN and nanoWatt XLP Technology

PIC18F66K80 FAMILY
2.0 GUIDELINES FOR GETTING
STARTED WITH PIC18FXXKXX
MICROCONTROLLERS
2.1 Basic Connection Requirements
Getting started with the PIC18F66K80 family family of
8-bit microcontrollers requires attention to a minimal
set of device pin connections before proceeding with
development.
The following pins must always be connected:
• All VDD and VSS pins
(see Section 2.2 “Power Supply Pins”)
• All AVDD and AVSS pins, regardless of whether or
not the analog device features are used
(see Section 2.2 “Power Supply Pins”)
• MCLR pin
(see Section 2.3 “Master Clear (MCLR) Pin”)
• ENVREG (if implemented) and VCAP/VDDCORE pins
(see Section 2.4 “Voltage Regulator Pins
(ENVREG and VCAP/VDDCORE)”)
These pins must also be connected if they are being
used in the end application:
• PGC/PGD pins used for In-Circuit Serial
Programming™ (ICSP™) and debugging purposes
(see Section 2.5 “ICSP Pins”)
• OSCI and OSCO pins when an external oscillator
source is used
(see Section 2.6 “External Oscillator Pins”)
Additionally, the following pins may be required:
• VREF+/VREF- pins are used when external voltage
reference for analog modules is implemented
Note:
The AVDD and AVSS pins must always be
connected, regardless of whether any of
the analog modules are being used.
The minimum mandatory connections are shown in
Figure 2-1.
FIGURE 2-1:
RECOMMENDED
MINIMUM CONNECTIONS
VDD
C2⁽²⁾
R1
R2
C1
C6⁽²⁾
MCLR
(1) (1)
ENVREG
VCAP/VDDCORE
PIC18FXXKXX
VSS
VDD
VDD
VSS
C7⁽²⁾
C3⁽²⁾
C5⁽²⁾
C4⁽²⁾
Key (all values are recommendations):
C1 through C6: 0.1 F, 20V ceramic
R1: 10 kΩ
R2: 100Ω to 470Ω
Note 1:
2:
See Section 2.4 “Voltage Regulator Pins
(ENVREG and VCAP/VDDCORE)” for
explanation of ENVREG pin connections.
The example shown is for a PIC18F device
with five VDD/VSS and AVDD/AVSS pairs.
Other devices may have more or less pairs;
adjust the number of decoupling capacitors
appropriately.
 2010-2012 Microchip Technology Inc.
DS39977F-page 45