MIKROE-11 mikroElektronika, MIKROE-11 Datasheet
MIKROE-11
Specifications of MIKROE-11
Related parts for MIKROE-11
MIKROE-11 Summary of contents
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CONTENTS BIGAVR2 KEY FEATURES CONNECTING THE SYSTEM INTRODUCTION Switches Jumpers MCU Sockets Power Supply On-board USB 2.0 Programmer Oscillator LEDs Reset Circuit Push-buttons 2x16 Character LCD Graphic LCD Touch Panel RS-232 Communication A/D Converter Test Inputs Direct Port Access PS/2 ...
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BIGAVR2 KEY FEATURES 4 1. External power supply 16v AC/DC. 2. Selectable external and USB power supply. When using USB port, there is no need for external power supply. 3. Power on/off switch. 4. USB connector. 5. ...
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CONNECTING THE SYSTEM Apart from this manual, the development system box contains development system, product CD, USB cable, RS232 cable and user's manuals for AVRflash programmer, mikroICD Debug- ger and Installing USB drivers. In order to use BIGAVR2 properly, it ...
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INTRODUCTION 6 The BIGAVR2 development system is a full-featured development board for Atmel AVR microcontrollers designed to allow students and engineers to easily test and explore the capabilities of these AVR microcontrollers. In addition, it allows AVR microcontrollers ...
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SWITCHES The BIGAVR2 development board features a number of peripheral devices. In order to enable them before programming, the appropriate jumpers or switches have to be properly set. Switches are mechanical devices which have two positions - ON and OFF. ...
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JUMPERS 8 Jumpers, like switches, are used to break or establish connection between two points. Under the plastic cover of a jumper, there is a metal contact which establishes connection when the jumper is placed over two pins. Figure 3 ...
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MCU CARD BIGAVR2 is delivered with the 64-pin microcontroller ATmega128. The user can remove MCU card with this chip and fit another MCU card with another microcontroller such as ATmega1280 (100-pins). When placing MCU card on the BIGAVR2 MCU socket, ...
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Microcontroller pins are routed to various peripherals as illustrated in figure 6. All the MCU 10 ports are directly connected to 2x5 direct port access connectors placed on the right side of the board. Such connectors are normally used for ...
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POWER SUPPLY BIGAVR2 can use on of two power supply sources - PC power supply over USB cable (by default) and external power supply (external AC/DC power adapter). When using power sup- ply over USB, the system should be connected ...
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ON-BOARD USB 2.0 PROGRAMMER 12 There is no need to use external equipment during programming as the BIGAVR2 development system has its own on-board USB 2.0 programmer only needed to connect the system to PC using the USB ...
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There are two different groups of AVR MCUs (64- and 100-pin microcontrollers). The first group (Default) uses jumper groups J20 and J21 for programming: PDI (PE0 pin), PDO (PE1 pin) and SCK (PB1 pin). See Figure 11. Another group uses ...
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OSCILLATOR 14 The BIGAVR2 development board has on-board oscillator circuit for generating microcon- troller’s clock input and crystal oscillator placed on MCU Card as well. The AVRFlash pro- Figure 13 On-board oscillator Figure 15 Oscillator circuit diagram grammer enables you ...
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LEDs Light Emitting Diodes (LEDs) are components most commonly used for displaying pins’ dig- ital state. BIGAVR2 has 86 LEDs connected to the microcontroller ports: PORTA, PORTB, PORTC, PORTD, PORTE, PORTF, PORTG, PORTH, PORTJ, PORTK and PORTL. Figure 16 On-board ...
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Figure 17 illustrates the connection between PORTF pins and the corresponding LEDs. A resistor is serially connected to LEDs in order to limit their current. In this very case the resis- tor value is 1K. Figure 17 LEDs circuit ...
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RESET CIRCUIT In addition to other push-buttons, there is one red button on the far left portion of the boad marked as RESET used for MCU reset. As seen in figure below, the microcontroller MCLR pin is connected ...
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PUSH-BUTTONS 18 BIGAVR2 has 86 push-buttons used to change the state of digital inputs on the microcontroller ports. There is also one RED push-button which acts as a RESET. Figure 20 Push-buttons ...
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Figure 21 illustrates the connection between push-buttons and the corresponding PORTC, PORTA and PORTF pins. Jumper J12 determines whether a button press will bring logic zero (0) or logic one (1) to the appropriate pin. When button is released the ...
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Referring to figure 22, 20 jumper J3 is set to pull-up position so that pull-up resis- tor pulls the microcontroller pin PC2 pin to +5V. By pressing the button, the PC2 pin will be connected to ground via J12. Accordingly, ...
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CHARACTER LCD IN 4-BIT MODE Figure 24 2x16 LCD in 4-bit mode Figure 25 2x16 LCD circuit diagram Note very important to bear in mind that LCD should be placed on or removed from the BIGAVR2 development ...
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GRAPHIC LCD 22 A graphic LCD (GLCD) provides an advanced method for displaying visual messages. While a character LCD can display only alphanumeric characters, a GLCD can be used to display mes- sages in the form of drawings and bitmaps. ...
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TOUCH PANEL Touch panel is a thin, self-adhesive, transparent panel that could be placed over screen of graphic LCD. It consists of two separate foils which form “sandwich” structure. They are very sensitive to press so that even a soft ...
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RS-232 COMMUNICATION 24 RS-232 communication enables point-to-point data transfer commonly used in data acquisition applications to transfer data between the microcontroller and PC. Since the volt- age levels of the microcontroller and PC are not directly compatible with ...
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Figure 32 Connection between microcontroller and PC through the RS-232A 25 ...
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Figure 33 Connection between microcontroller and PC through the RS-232B ...
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A/D CONVERTER TEST INPUTS The BIGAVR2 development board has two potentiometers for demonstrating the operation of analog-to-digital converter (ADC). Both potentiometers outputs are in the range 5V. These analog signals can be connected to two different analog ...
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Figure 35 NOTE: Jumpers J18 and J19 should not connect pins with the same labelat the same time. Pull-up/down resistors on PORTF analog input pins should be disabled using the SW4 A/D Converter circuit diagram ...
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DIRECT PORT ACCESS All the microcontroller input/output pins can be accessed via 10-pin connectors (2x5) placed along the right side of the board. For each microcontroller port there is one connector provid- ing eight port pins for data transfer and ...
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Figure 39 PORTA Figure 38 PORTA circuit diagram ...
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PS/2 (KEYBOARD) CONNECTOR PS/2 connector allows direct connection between BigAVR2 and devices that use PS/2 communication, such as PC, keyboard or mouse. For example, the microcontroller can be connected to a key- board to capture pressed keys ...
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JTAG CONNECTOR 32 JTAG connector can be used as a serial programming interface part of on-chip debug- ger. JTAG connector pin marked as nSRST is directly connected to the RESET push-button. In that way, on-chip debugger is ...
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MMC/SD (MULTIMEDIA CARD) MMC card is used as a storage media for a portable devices from which it can be easily removed to enable data transfer to a PC. For example, a digital camera uses MMC card for storing image ...
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