Adaptor for 8 and 28 pin AVR


Posted on Aug 30, 2012

This adaptor lets me program 8 or 20 pin DIP devices using the In-System Programmer (ISP) described in Atmel's AVR910 application note. This circuit provides power and clocks for the part to be programmed and power to the ISP circuit. When programming 8 pin devices, the part is positioned toward pins 1 and 20 of the socket such that the 8 pins of the chip occupy the pins 1,2,3,4,17,18,19, abd 20 of the programming socket.In the case of an 8 pin part being programmed, the SPST switch that grounds pin 4 must to be closed.


Adaptor for 8 and 28 pin AVR
Click here to download the full size of the above Circuit.

Conversely, when programming a 20 pint part, the switch on pin 4 must be open so the crystal can be used for the clock for the part being programmed.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

USB Microphone Line Level Preamp
Bipolar Stepper Motor Driver Circuit
Simple Code Lock
scr high power alarm driver circuit design
switching
PWM - Pulse Width Modulation for DC Motor Speed and LED Brightness 2
WIEN BRIDGE OSCILLATOR CIRCUIT
CW117 CW217 CW317 charger has a current-limiting protection configuration
Length 1 minute delay relay pull transistor circuit diagram
A long light power control circuit



Top