MIKROE-419 mikroElektronika, MIKROE-419 Datasheet - Page 18

• Manufacturer Part Number: MIKROE-419
• Description: Development Boards & Kits - PIC / DSPIC BIGPIC6 DEVELOPMENT SYSTEM
• Manufacturer: mikroElektronika

Specifications of MIKROE-419

• Rohs: yes
• Product: Development Kits
• Core: PIC
• Interface Type: ICD, IDC10, JTAG, RS-232, USB
• Operating Supply Voltage: 9 V to 32 V
• Data Bus Width: 8 bit
• Description/function: Development Board Only, Touch Screen, Pencil, DS1820, LCD, Serial Cable, GLCD not included
• Dimensions: 265 mm x 220 mm
• For Use With: PIC

18
13.0. LEDs
13.0. LEDs
LED diode (Light-Emitting Diode) is a highly effi cient electronic light source. When connecting LEDs, it is necessary to use a current
limiting resistor, the value of which is calculated using formula R=U/I where R is referred to resistance expressed in ohms, U is referred to
voltage on the LED and I stands for LED diode current. A common LED diode voltage is approximately 2.5V, while the current varies from
1mA to 20mA depending on the type of LED diode. The BigPIC6 development system uses LEDs with current I=1mA.
The BigPIC6 development system has 67 LEDs which visually indicate the state of each microcontroller I/O pin. An active LED diode
indicates that a logic one (1) is present on the pin. In order to enable the pin state to be shown, it is necessary to select appropriate
port PORTA, PORTB, PORTC, PORTD, PORTE, PORTF/G, PORTH or PORTJ using the DIP switch SW10.
MikroElektronika
Figure 13-2: LED diode and port PORTB connection schematic
Figure 13-1: LEDs
PORTB LEDs are turned on
VCC
RH2
RH3
RE1
RE0
RG0
RG1
RG2
RG3
MCLR
RG4
GND
VCC
RF7
RF6
RF5
RF4
RF3
RF2
RH7
RH6
PIC18Fxx
VCC
VCC
OSC2
OSC1
GND
VCC
RC5
RC4
RC3
RC2
RB0
RB1
RB2
RB3
RB4
RB5
RB6
RB7
RJ2
RJ3
RJ7
RJ6
VCC
MCU
Microcontroller
A
RB0
RB1
RB2
RB3
RB4
RB5
RB7
RB6
SMD resistor limiting current fl ow through an LED
RB0
RB1
RB2
RJ2
RJ3
LD7
LD8
LD9
LD10
LD11
LD12
LD13
LD14
K
A
SMD LED
BigPIC6 Development System
BigPIC6 Development System
I
K
472
R
Notch indicating the SMD LED cathode
RN11
8x4K7
R=U/I
PORTB
SW10