PIC18F45K80-I/P View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC18F45K80-I/P

28/40/44/64-Pin, Enhanced Flash Microcontrollers with ECAN™ and nanoWatt XLP Technology

Microchip 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

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