PIC18F2331-E/ML MICROCHIP [Microchip Technology], PIC18F2331-E/ML Datasheet - Page 25

• Manufacturer Part Number: PIC18F2331-E/ML
• Description: 28/40/44-Pin Enhanced Flash Microcontrollers with nanoWatt Technology, High-Performance PWM and A/D
• Manufacturer: MICROCHIP [Microchip Technology]

2.0
2.1
Getting started with the PIC18F2331/2431/4331/4431
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 V
• All AV
• MCLR pin
These pins must also be connected if they are being
used in the end application:
• PGC/PGD pins used for In-Circuit Serial
• OSCI and OSCO pins when an external oscillator
Additionally, the following pins may be required:
• V
The minimum mandatory connections are shown in
Figure
 2010 Microchip Technology Inc.
(see
not the analog device features are used
(see
(see
Programming™ (ICSP™) and debugging purposes
(see
source is used
(see
reference for analog modules is implemented
Note:
REF
DD
2-1.
Section 2.2 “Power Supply
Section 2.2 “Power Supply
Section 2.3 “Master Clear (MCLR)
Section 2.4 “ICSP
Section 2.5 “External Oscillator
+/V
DD
GUIDELINES FOR GETTING
STARTED WITH PIC18F
MICROCONTROLLERS
Basic Connection Requirements
and V
REF
and AV
The AV
connected, regardless of whether any of
the analog modules are being used.
- pins are used when external voltage
SS
SS
pins
DD
pins, regardless of whether or
and AV
Pins”)
SS
pins must always be
Pins”)
Pins”)
Pins”)
Pin”)
PIC18F2331/2431/4331/4431
FIGURE 2-1:
V
Key (all values are recommendations):
C1 through C6: 0.1 µF, 20V ceramic
R1: 10 kΩ
R2: 100Ω to 470Ω
Note 1:
DD
C6
R1
C1
(1)
R2
The example shown is for a PIC18F device
with five V
Other devices may have more or less pairs;
adjust the number of decoupling capacitors
appropriately.
MCLR
V
V
SS
DD
C5
DD
PIC18FXXXX
RECOMMENDED
MINIMUM CONNECTIONS
(1)
/V
SS
C2
and AV
(1)
C4
DD
DS39616D-page 25
(1)
/AV
V
V
DD
SS
SS
pairs.
C3
(1)