Datasheet

 2012-2013 Microchip Technology Inc. DS30009312B-page 33
PIC24FJ128GC010 FAMILY
2.0 GUIDELINES FOR GETTING
STARTED WITH 16-BIT
MICROCONTROLLERS
2.1 Basic Connection Requirements
Getting started with the PIC24FJ128GC010 family
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 V
DD and VSS pins
(see Section 2.2 “Power Supply Pins”)
• All analog power pins (AV
DD, SVDD, AVSS and
SV
SS), regardless of whether or not the analog
device features are used
(see Section 2.2 “Power Supply Pins”)
• The USB transceiver supply, V
USB3V3, regardless
of whether or not the USB module is used
(see Section 2.2 “Power Supply Pins”)
•MCLR pin
(see Section 2.3 “Master Clear (MCLR) Pin”)
•V
CAP pin
(see Section 2.4 “Voltage Regulator Pin (V
CAP)”)
These pins must also be connected if they are being
used in the end application:
• PGECx/PGEDx 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:
• Any voltage reference pins used when external
voltage reference for analog modules is
implemented (AV
REF+/AVREF-, CVREF+/CVREF-,
DV
REF+ and SVREF+/SVREF-)
The minimum mandatory connections are shown in
Figure 2-1.
FIGURE 2-1: RECOMMENDED
MINIMUM CONNECTIONS
Note: All analog power supply and return pins
must always be connected, regardless of
whether any of the analog modules are
being used.
PIC24FJXXXX
VDD
VSS
VUSB3V3
VSS
VSS
VDD
AVDD AVSS SVDD SVSS
C1
(4)
R1
V
DD
MCLR
VCAP
R2
C7
C2
(2)
C3
(3)
C4
(2)
C5
(2)
C6
(2)
Key (all values are recommendations):
C1 through C6: 0.1 F, 20V ceramic
C7: 10 F, 6.3V or greater, tantalum or ceramic
R1: 10 kΩ
R2: 100Ω to 470Ω
Note 1: See Section 2.4 “Voltage Regulator Pin
(V
CAP)” for details on selecting the proper
capacitor for V
CAP.
2: The example shown is for a PIC24F device
with five power and ground pairs (including
analog and USB). Other devices may have
more or less pairs; adjust the number of
decoupling capacitors appropriately.
3: See Section 19.1 “Hardware Configura-
tion” for details on connecting the pins for
USB operation.
4: C1 is optional, see Section 2.3 “Master
Clear (MCLR) Pin” and Section 2.5 “ICSP
Pins” for more information.
(1)