PIC24FJ64GA705 Datasheet, PDF (29/412 Pages) –

PIC24FJ256GA705 FAMILY
2.0 GUIDELINES FOR GETTING
STARTED WITH 16-BIT
MICROCONTROLLERS
2.1 Basic Connection Requirements
Getting started with the PIC24FJ256GA705 family of
16-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”)
• VCAP pin
(see Section 2.4 “Voltage Regulator Pin (VCAP)”)
These pins must also be connected if they are being
used in the end application:
• PGCx/PGDx 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 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
VSS
VDD
PIC24FJXXX
VCAP
VDD
VSS
(1)
C7
C3⁽²⁾
C5⁽²⁾
C4⁽²⁾
Key (all values are recommendations):
C1 through C6: 0.1 F, 50V ceramic
C7: 10 F, 16V or greater, ceramic
R1: 10 kΩ
R2: 100Ω to 470Ω
Note 1:
2:
See Section 2.4 “Voltage Regulator Pin
(VCAP)” for an explanation of voltage
regulator pin connections.
The example shown is for a PIC24F device
with five VDD/VSS and AVDD/AVSS pairs.
Other devices may have more or less pairs;
adjust the number of decoupling capacitors
appropriately.
 2016 Microchip Technology Inc.
DS30010118B-page 29