Prototype Board for 20-,28-, and 40-pin Atmel AVR Microcontrollers with RS232 Port, Reset IC, Status LED, 10-pin STK500 Compatible ISP Port, JTAG port (40-pin DIP AVRs only), 3.3V & 5.0V Power Supply Circuit and exchangeable Crystal Oscillator Circuit

AVR Prototype Board Features

• Ships completely assembled and tested
• 20-pin, 28-pin and 40-pin DIL microcontroller sockets
• Jumper Selectable +3.3V/5.0V board supply voltage
• Power plug-in jack: 5.5mm outer, 2.5mm inner diameter
• Accepts AC and DC input voltage
• Minimum Input voltage should be 3.5VDC or 2.5VAC higher than desired board supply voltage
• Maximum Input voltage 15VDC or 10.8VAC
• RS232 DB9 female connector with MAX2232 interface circuit and Tx, Rx, CTS, DTR/RTS signals
• Rx and Tx pins are connected to AVR UART pins
• Connect CTS,DTR/RTS signals to general I/O pins of your choice
• MAX2232 provides reliable RS232 at 3.3V and 5.0V board Vcc
• AVR JTAG connector (top view on target board) for in-circuit programming and debugging with AVR JTAG In-Circuit Debugger & Programmer
• Note: JTAG support only available for 40-pin DIP socket, as AVR micros in smaller packages do not have a JTAG interface
• 5x2 pin STK500 compatible ISP connector (top view on target board) for In-System Programming with an AVR ISP Programmer
• 10 MHz quartz crystal oscillator in machined, spring loaded socket for easy replacement

• Reset IC ZM33064
• Reset button
• Push button connected to PB4 on 40-pin DIP and PD2 on 20- and 28-pin DIP, can be connected/ disconnected via jumper
• Status LED connected to PB7/SCK on 20/40-pin DIP and PB5/SCK on DIP28 via removable jumper
• Extension solder pads for every µC pin
• Grid 100 mils
• GND bus
• Vcc bus
• FR-4, 1.5 mm (0.062"), dual layer, electroless nickel/immersion gold (ENIG) plating, green soldermask, white silkscreen component print
• Four mounting holes
• Supported devices: All 20- and 28-pin Atmel AVR micros. 40-pin AVr devices with AVcc/Vcc on pins 30/10 and AGND/GND on pins 31/11 (e.g. ATmega16)

This prototype board is intended as a low-cost tool with limited support. It does not ship with any documentation or software.

Download AVR Prototype Board Schematic

Download AVR Prototype Board User Manual

Lead-Time: In stock
Ships From: USA