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PIC18F47J53 Datasheet, PDF (31/586 Pages) Microchip Technology – 28/44-Pin, High-Performance USB Microcontrollers with nanoWatt XLP Technology | |||
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PIC18F47J53 FAMILY
2.0 GUIDELINES FOR GETTING
STARTED WITH PIC18FJ
MICROCONTROLLERS
2.1 Basic Connection Requirements
Getting started with the PIC18F47J53 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 âPower Supply Pinsâ)
⢠All AVDD and AVSS pins, regardless of whether or
not the analog device features are used
(see Section 2.2 âPower Supply Pinsâ)
⢠MCLR pin
(see Section 2.3 âMaster Clear (MCLR) Pinâ)
⢠VCAP/VDDCORE pins (see Section 2.4 âVoltage
Regulator Pins (VCAP/VDDCORE)â)
These pins must also be connected if they are being
used in the end application:
⢠PGC/PGD pins used for In-Circuit Serial
Programming⢠(ICSPâ¢) and debugging purposes
(see Section 2.5 âICSP Pinsâ)
⢠OSCI and OSCO pins when an external oscillator
source is used
(see Section 2.6 âExternal Oscillator Pinsâ)
Additionally, the following pins may be required:
⢠VREF+/VREF- pins are used when external voltage
reference for analog modules is implemented
Note:
On 44-pin QFN packages, the AVDD and
AVSS pins must always be connected,
regardless of whether any of the analog
modules are being used. On other pack-
age types, the AVDD and AVSS pins are
internally connected to the VDD/VSS pins.
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
VCAP/VDDCORE
PIC18FXXJXX
VSS
VDD
VDD
VSS
(1)
C7
C3(2)
C5(2)
C4(2)
Key (all values are recommendations):
C1 through C6: 0.1 ïF, 20V ceramic
C7: 10 ïF, 6.3V or greater, tantalum or ceramic
R1: 10 kâ¦
R2: 100⦠to 470â¦
Note 1:
2:
See Section 2.4 âVoltage Regulator Pins
(VCAP/VDDCORE)â for explanation of
VCAP/VDDCORE 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.
ï£ 2010 Microchip Technology Inc.
Preliminary
DS39964B-page 31
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