MA240017 Microchip Technology, MA240017 Datasheet - Page 20

• Manufacturer Part Number: MA240017
• Description: MODULE PLUG-IN PIC24F16KA102 PIM
• Manufacturer: Microchip Technology
• Series: PIC®r

Specifications of MA240017

• Accessory Type: Plug-In Module (PIM) - PIC24F16KA102
• Product: Microcontroller Modules
• Data Bus Width: 16 bit
• Core Processor: PIC24F16KA102
• Operating Supply Voltage: 3 V to 3.6 V
• Development Tools By Supplier: Integrated Development Environment, Assembler, ANSI C Compiler
• Processor Series: PIC24F
• Silicon Manufacturer: Microchip
• Core Architecture: PIC
• Core Sub-architecture: PIC24
• Silicon Core Number: PIC24F
• Silicon Family Name: PIC24FxxKAxx
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: Explorer 16 (DM240001 or DM240002)
• For Use With: DM240001 - BOARD DEMO PIC24/DSPIC33/PIC32
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

PIC24F16KA102 FAMILY
2.6
Many microcontrollers have options for at least two
oscillators: a high-frequency Primary Oscillator and a
low-frequency
Section 8.0 “Oscillator Configuration” for details).
The oscillator circuit should be placed on the same
side of the board as the device. Place the oscillator
circuit close to the respective oscillator pins, with no
more than 0.5 inch (12 mm) between the circuit
components and the pins. The load capacitors should
be placed next to the oscillator itself, on the same side
of the board.
Use a grounded copper pour around the oscillator
circuit to isolate it from surrounding circuits. The
grounded copper pour should be routed directly to the
MCU ground. Do not run any signal traces or power
traces inside the ground pour. Also, if using a
two-sided board, avoid any traces on the other side of
the board where the crystal is placed. A suggested
layout is shown in Figure 2-3.
For additional information and design guidance on
oscillator circuits, please refer to these Microchip
Application Notes, available at the corporate web site
(www.microchip.com):
• AN826, “Crystal Oscillator Basics and Crystal
• AN849, “Basic PICmicro
• AN943, “Practical PICmicro
• AN949, “Making Your Oscillator Work”
FIGURE 2-3:
DS39927B-page 18
Selection for rfPIC™ and PICmicro
and Design”
Main Oscillator
Guard Ring
Guard Trace
Secondary
Oscillator
External Oscillator Pins
Secondary
SUGGESTED PLACEMENT
OF THE OSCILLATOR
CIRCUIT
®
Oscillator Design”
®
Oscillator
Oscillator Analysis
®
Devices”
13
14
15
16
17
18
19
20
(refer
Preliminary
to
2.7
If MPLAB ICD 2, ICD 3 or REAL ICE emulator is
selected as a debugger, it automatically initializes all of
the A/D input pins (ANx) as “digital” pins, by setting all
bits in the AD1PCFGL register.
The bits in this register that correspond to the A/D pins
that are initialized by MPLAB ICD 2, ICD 3 or the REAL
ICE emulator, must not be cleared by the user
application firmware; otherwise, communication errors
will result between the debugger and the device.
If your application needs to use certain A/D pins as
analog input pins during the debug session, the user
application must clear the corresponding bits in the
AD1PCFGL register during initialization of the ADC
module.
When MPLAB ICD 2, ICD 3 or the REAL ICE emulator
is used as a programmer, the user application firmware
must correctly configure the AD1PCFGL register.
Automatic initialization of this register is only done
during debugger operation. Failure to correctly
configure the register(s) will result in all A/D pins being
recognized as analog input pins, resulting in the port
value being read as a logic ‘0’, which may affect user
application functionality.
2.8
Unused I/O pins should be configured as outputs and
driven to a logic low state. Alternatively, connect a 1 kΩ
to 10 kΩ resistor to V
output to logic low.
Configuration of Analog and
Digital Pins During ICSP
Operations
Unused I/Os
SS
© 2009 Microchip Technology Inc.
on unused pins and drive the