MIKROE-798 mikroElektronika, MIKROE-798 Datasheet - Page 9

• Manufacturer Part Number: MIKROE-798
• Description: Development Boards & Kits - PIC / DSPIC EASYPIC v7 DEVELOPMENT SYSTEM
• Manufacturer: mikroElektronika

Specifications of MIKROE-798

• Rohs: yes
• Product: Development Boards
• Tool Is For Evaluation Of: PIC18F45K22
• Core: PIC
• Interface Type: RS-232, USB
• Operating Supply Voltage: 5 V
• Description/function: Development board only, touch screen, pencil, DS1820, LCD, serial cable, GLCD not included
• Dimensions: 266 mm x 220 mm

Using crystal oscillators
Figure 4-6: RA6 and RA7 as I/O pins
(when using internal oscillator)
PIC microcontrollers normally use a quartz crystal for the purpose of providing
clock frequency. The EasyPIC
Microcontrollers in DIP18A, DIP18B, DIP28 and DIP40 packages use socket
X1 (OSC1) for quartz-crystal.
1
Figure 4-3: Place both ends of microcontroller on
the socket so the pins are aligned correctly
IMPORTANT:
IMPORTANT:
How to properly place your microcontroller into the DIP socket?
Before you plug the microcontroller into the
appropriate socket, make sure that the power
supply is turned off. Images above show how to
correctly plug a microcontroller. First make sure that
1
Microcontrollers which are plugged into socket 10F use their own internal oscillator and are not connected to any of the mentioned quartz-crystal sockets.
Only one microcontroller may be plugged into the development board at the same time.
™
v7 provides two sockets for quartz-crystal.
Figure 4-7: RA6 and RA7 connected
to X1 quartz-crystal
2
Figure 4-4: with both fingers, evenly distribute
the force and press the chip into the socket.
a half circular cut in the microcontroller DIP packaging
matches the cut in the DIP socket. Place both ends of
the microcontroller into the socket as shown in Figure
4-3. Then put the microcontroller slowly down until
2
Figure 4-8: RA4 and RA5 as I/O pins
(when using internal oscillator)
If you want to use microcontrollers in DIP8, DIP14 and DIP20 packages, it is
necessary to put quartz crystal into socket X2 (OSC2). The value of the quartz-
crystal depends on the maximum clock frequency allowed and your application.
You can always exchange the default 8MHz crystal with another one.
3
Figure 4-5: Properly placed microcontroller will
have equally leveled pins.
all the pins match the socket as shown in Figure 4-4.
Check again if everything is placed correctly and press
the microcontroller until it is completely plugged into
the socket as shown in Figure 4-5.
3
Figure 4-9: RA4 and RA5 connected
to X2 quartz-crystal
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