AVR 8-bit RISC micro controllers by Atmel Seamk / ICT / Seppo Stenberg General features of AVR family Development tools - board, compiler, simulator etc. ATmega16 - functional blocks - c-code examples

2 General features of AVR family - Wide range of types (ATtiny, ATmega, AT90 ) - High integration ( inexpesive ) - Low power consumption ( 1.8 – 5.5 V ) - Power saving ( sleep modes ) - Hardvard architecture ( internal buses ) - 20 MIPS ( 20 MHz ) (single cycle execution ) - Memories integrated (flash, SRAM, EEPROM ) - Dedicated c-code support - In-system programming

3 Parameter Product Table

4 Development tools (main board) - Modular board with ATmega16 - four 8-bit ports - SPI port - JTAG port - DC-connector ( 7 – 12 Vdc ) - System clock ( 8 MHz ) - Real time clock ( kHz ) - 20 MIPS ( 20 MHz ) - Reset switch

5 Development tools (modules) - LCD-module, 4 x 27 characters - LED-module, 8-leds - Button-module, four buttons, four leds - UBS-module, SPI programming - Serial-module, RS-232 bus - Pot-module, four potentiometer - Con-module three connectors + ground

6 Development tools (compiler) In this course we use - free AVRstudio development package - free WinAVR compiler - free AVRdude programmer We can use also - free ConTEXT text editor with smart keys - free ChipBlaster and PonyProg -programmers

7 Development tools (simulator) - free AVRStudio by Atmel - c-code and assembly-simulation - sophistigated register read / write - excellent debugging features

8 Installing tools (WinAVR, ConTEXT) All necessary programs can be downloaded freely from internet. WinAVR consists of command prompt programs and smart keys in ConTEXT will help to use them. Programming can be made using either a parallel (LPT1) or Serial (USB) cable. Detailed instructions for installation is in a separate document. ( DevTools_eng.htm ) AVRStudio, PonyProg and ChipBlaster are simple to install and specific instructions are not necessary

9 Compiling and linking (WinAVR) The programmer writes only the c-code. Makefile consists the instruction for compiling and linking. WinAVR includes necessary library files.

10 ATmega16 Blocks - Ports A, B, C and D - External interrupts - Timers - Timer0 - Pulse Width Modulation (PWM) - Clear Timer on Compare match - Real Time Clock Memories (SRAM) - flash - EEPROM - Searial port (USART) - AD-converter - Watch Dog