PIC24F16KA302-E/SP Microchip Technology, PIC24F16KA302-E/SP Datasheet - Page 29
![no-image](/images/manufacturer_photos/0/4/439/microchip_technology_sml.jpg)
PIC24F16KA302-E/SP
Manufacturer Part Number
PIC24F16KA302-E/SP
Description
16KB Flash, 2KB RAM, 512B EEPROM, 16 MIPS, 12-bit ADC, CTMU, XLP 28 SPDIP .300in
Manufacturer
Microchip Technology
Series
PIC® XLP™ 24Fr
Datasheet
1.PIC24F16KA301T-ISO.pdf
(320 pages)
Specifications of PIC24F16KA302-E/SP
Core Processor
PIC
Core Size
16-Bit
Speed
32MHz
Connectivity
I²C, IrDA, LIN, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, HLVD, POR, PWM, WDT
Number Of I /o
24
Program Memory Size
16KB (5.5K x 24)
Program Memory Type
FLASH
Eeprom Size
512 x 8
Ram Size
2K x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 3.6 V
Data Converters
A/D 13x12b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
28-DIP (0.300", 7.62mm)
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
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2.6
Many microcontrollers have options for at least two
oscillators: a high-frequency primary oscillator and a
low-frequency secondary oscillator (refer to
Section 9.0 “Oscillator
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 cir-
cuit 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.
Layout suggestions are shown in
packages may be handled with a single-sided layout
that completely encompasses the oscillator pins. With
fine-pitch packages, it is not always possible to com-
pletely surround the pins and components. A suitable
solution is to tie the broken guard sections to a mirrored
ground layer. In all cases, the guard trace(s) must be
returned to ground.
In planning the application’s routing and I/O assign-
ments, ensure that adjacent port pins and other
signals, in close proximity to the oscillator, are benign
(i.e., free of high frequencies, short rise and fall times,
and other similar noise).
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”
2.7
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.
2011 Microchip Technology Inc.
Selection for rfPIC™ and PICmicro
and Design”
External Oscillator Pins
Unused I/Os
SS
Configuration”details).
on unused pins and drive the
®
Oscillator Design”
®
Oscillator Analysis
Figure
®
Devices”
2-5. In-line
PIC24FV32KA304 FAMILY
for
FIGURE 2-5:
(tied to ground)
Timer1 Oscillator
Bottom Layer
Copper Pour
Oscillator
GND
Primary
Crystal
OSCO
OSCI
C1
C2
T1 Oscillator: C1
DEVICE PINS
Single-Sided and In-Line Layouts:
Fine-Pitch (Dual-Sided) Layouts:
(tied to ground)
Copper Pour
SUGGESTED PLACEMENT
OF THE OSCILLATOR
CIRCUIT
Top Layer Copper Pour
`
`
(tied to ground)
`
Primary Oscillator
T1 Oscillator: C2
Crystal
DEVICE PINS
DS39995B-page 29
C2
C1
Oscillator
Crystal
OSC1
OSC2
GND
T1OSO
T1OS I
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