AVR boards

This directory holds schematics and essential parts data on some AVR boards commonly used in the school.

NEW: See the Bluetooth page for a new AVR/Bluetooth board undergoing testing as at 6/may/04. http://www.cse.unsw.edu.au/~pcb/Bluetooth/bluetooth.html

The boards ahown here use the ATmega323 AVR microcontroller. Newer version of these boards use th ATmega32 AVR microcontroller. The two processors are pin comptabile - the newer ATmega32 has some extra feature and runs faster and is a 'standard' device within the School.

ATmega323/32 features:

• 8-bit RISC processor - 4/8MHz at 3.3v, up to 16MHz at 5v
• 32K bytes of FLASH program memory
• 2K ram
• 1K EEPROM
• 3 counter timers, 4 channels PWM
• 8 channel 10-bit ADC
• UART, SPI and two-wire interfaces
• 32 I/O pins

• AVR323.pdf - 18.6K
  - schematic for an ATMega323 boards (the Mega is pin compatible with the AT90S8535) The main interface to this board is RS232
• AVR323.ps - 118.3K
  - postscript version of above


AVR323 board

---

• USB-AVR323.pdf - 21.9K
  - schematic for an ATMega323 boards The main interface to this board is USB via the FTDI USB-Serial converter chip/li>
• USB-AVR323.ps - 134.2K
  - postscript version of above


USB-AVR323 board

This is a diagram of the board's layout



• FT232BM.pdf - 832.4K
  - data for the FTDI USB-Serial converter chip
• MAX3224.pdf - 241.2K
  - data for RS232 interface chip
• MIC5200.pdf - 89.3K
  -