PIC18F45J10 FAMILY
FIGURE 2-1:
RECOMMENDED
MINIMUM CONNECTIONS
2.0
2.1
GUIDELINES FOR GETTING
STARTED WITH PIC18FJ
MICROCONTROLLERS
(2)
C2
VDD
Basic Connection Requirements
Getting started with the PIC18F45J10 family family of
8-bit microcontrollers requires attention to a minimal
set of device pin connections before proceeding with
development.
(1)
(1)
R1
R2
ENVREG
MCLR
VCAP/VDDCORE
C1
The following pins must always be connected:
C7
PIC18FXXJXX
• All VDD and VSS pins
(see Section 2.2 “Power Supply Pins”)
VDD
VSS
VSS
VDD
(2)
(2)
C3
C6
• 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”)
(2)
(2)
C4
C5
• ENVREG (if implemented) and VCAP/VDDCORE pins
(see Section 2.4 “Voltage Regulator Pins
(VCAP/VDDCORE)”)
Key (all values are recommendations):
These pins must also be connected if they are being
used in the end application:
C1 through C6: 0.1 μF, 20V ceramic
C7: 10 μF, 6.3V or greater, tantalum or ceramic
R1: 10 kΩ
• PGC/PGD pins used for In-Circuit Serial
Programming™ (ICSP™) and debugging purposes
(see Section 2.5 “ICSP Pins”)
R2: 100Ω to 470Ω
Note 1: See Section 2.4 “Voltage Regulator Pins
(VCAP/VDDCORE)” for explanation of
ENVREG pin connections.
• OSCI and OSCO pins when an external oscillator
source is used
(see Section 2.6 “External Oscillator Pins”)
2: The example shown is for a PIC18FJ device
with five VDD/VSS and AVDD/AVSS pairs.
Other devices may have more or less pairs;
adjust the number of decoupling capacitors
appropriately.
Additionally, the following pins may be required:
• VREF+/VREF- pins 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.
© 2009 Microchip Technology Inc.
DS39682E-page 23
MICROCHIP [ MICROCHIP ]
