Datasheet

16
UNI-DS6
MikroElektronika
page
12. LEDs
There are 72 LEDs on the UNI-DS6 development system used to visually indicate the state of each microcontroller
I/O pin� An active LED indicates that a logic one (1) is present on the pin� In order to enable LEDs to illuminate, it is
necessary to select the appropriate port (PORTA, PORTB, PORTC, PORTD, PORTE or PORTF/G) by using DIP switch
SW12� Ports PORTH and PORTJ are not connected to LEDs�
RA7
RA5
RA3
RA1
RA6
RA4
RA2
RA0
LD1
LD2
LD3
LD4
LD5
LD6
LD7
LD8
8x4K7
RN11
SW12
LED-RA
RA4 RE4
RE2
RA12
RB4 RF12
RB12 RG4
RC4 RG12
RC12 RH4
RD4 RJ4
RD12
USB-VBUS
RA6
RA14 RF6
RB6 RF14
RB14 RG6
RC6 RG14
RC14 RH6
RD6 RJ6
RD14
#RX232A
#TX232A
#SCL
#SDA
#SS1#
#SCK1
#MISO1
#MOSI1
USB-DP
RA0 RE0
RA8 RF0
RE6
RB0 RF8
RB8 RG0
RC0 RG8
RC8 RH0
RD0 RJ0
RD8
RA2
RA10 RF2
RF4
RB2 RF10
RB10 RG2
RC2 RG10
RC10 RH2
RD2 RJ2
RD10
RA5
RA13
RB5 RF13
RB13 RG5
RC5 RG13
RC13 RH5
RD5 RJ5
RD13
RA7
RA15 RF7
RF5
RF3
RB7 RF15
RB15 RG7
RC7 RG15
RC15 RH7
RD7 RJ7
RD15
#RX232B
#TX232B
#CS1#
#CS2#
#SS2#
#SCK2
#MISO2
#MOSI2
USB-DN
RA1 RE1
RA9 RF1
RE7
RE5
RE3
RB1 RF9
RB9 RG1
RC1 RG9
RC9 RH1
RD1 RJ1
RD9
RA3
RA11
RB3 RF11
RB11 RG3
RC3 RG11
RC11 RH3
RD3 RJ3
RD11
VCC-SW VCC-5V
CN20 CN21
Figure 12-2: LED and port PORT0 connection schematic
Figure 12-1: LEDs
Microcontroller
SMD resistor used to limit
current through an LED
Notch indicating the SMD
LED cathode