AVR-Chat

On 13 Dec 2004 at 1:12, Lasse Madsen wrote:

> Hi Ridho,
>  
> Tie PEN to your supply (high) no need for a series resistor that's just a
> waist of money. 

Correct.

> PEN stand for Parallel Programming Enable if you're not going to use this
> FORGET ABOUT IT! Tie it high and don't listen to what the others say.

Wrong. PEN stands for Programming Enable and it is for SPI 
programming - not parallel. Please check the data sheet (page 7 of 
rev I). It is only used on a power-on-reset.

Regards,
Les Grant.


-------------------------------------------------------------
Les Grant. VK2KYJ.      Phone: 02 9896 7150 Fax: 02 9896 7153
Grantronics Pty Ltd     Int'l: +612 9896 7150, +612 9896 7153
ABN 46 070 123 643
PO Box 275, Wentworthville. NSW. 2145. Australia.            
http://www.grantronics.com.au  mailto:info@grantronics.com.au
Microcontroller Hardware and Software development:  Atmel AVR
8051 derivatives, 80C196 family, C, ASM, Digital and analogue 
-------------------------------------------------------------
Australian distributor for:
o Dunfield Development Systems low cost development tools
o ImageCraft AVR and Motorola Windows-hosted C compilers
o ELNEC Device Programmers (E)EPROMs, Flash, Micros, PLDs
o CAN-BUS Hardware and Software from LAWICEL
o Logical Systems Programming, Prototyping & Production Adaptors
-------------------------------------------------------------