MIKROE-455 mikroElektronika, MIKROE-455 Datasheet - Page 14

• Manufacturer Part Number: MIKROE-455
• Description: Development Boards & Kits - 8051 EASY8051 V6 DEVELOPMENT SYSTEM
• Manufacturer: mikroElektronika

Specifications of MIKROE-455

• Rohs: yes
• Product: Development Kits
• Tool Is For Evaluation Of: AT89S8253
• Core: 8051
• Interface Type: CAN, MMC/SD, RS-232, USB
• Operating Supply Voltage: 5 V, 9 V to 32 V
• Data Bus Width: 8 bit
• Description/function: Development Board Only, GLCD, LCD, DS1820, Serial Cable not included
• Dimensions: 265 mm x 220 mm
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 55 C
• For Use With: AT89S8253

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9.0. LEDs
to use a current limiting resistor. 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 Easy8051 v6 development system uses LEDs with current I=1mA.
The Easy8051 v6 development has 38 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 PORT0, PORT1, PORT2, PORT3 or PORT4 using the DIP switch SW7.
MikroElektronika
Figure 9-1: LEDs
Figure 9-2: LED diode and port PORT0 connection schematic
PORT0 LEDs are turned on
Microcontroller
Easy8051 v6 Development System
Notch indicating the SMD LED cathode