Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Please Help!! Config Clock source with ATMEGA 16

Status
Not open for further replies.

tobb

Member level 5
Member level 5
Joined
Sep 20, 2002
Messages
87
Helped
7
Reputation
14
Reaction score
5
Trophy points
1,288
Activity points
893
atmega16 clock fuse

I used to use AT90S8535 with bascomAVR then I change to ATMEGA 16
First I try to program it using STK200/300 Compatible isp cable. It program OK But chip ATMEGA16 was work veryslow. Then I read the data sheet it said that default clocksource is internal 1 MHz osc. (I used Crystal 8 MHz) so i need to changed Fuse bit to make it know what clock source is.

Then I changed fusebit using bascom program..
First it say : A987 >> 0001:internal 1 mhz
then i changed to 1010:1010 which follow datasheet for external crystal used.. and i fuse it.....
After it done Programmer can't detect chip any more and can't program it.....

So .. Please help me what i done wrong.. did i gonna loose my ATMEGA16 and if i get new one how can i config it.. Thank....
 

ramesh

Advanced Member level 1
Advanced Member level 1
Joined
Jan 19, 2003
Messages
424
Helped
14
Reputation
28
Reaction score
14
Trophy points
1,298
Activity points
2,941
config clock bascom

Check the setting of lock bits which are different from fuse bits. If lock bits are set you can't reprogram or read. The only way then is do "chip erase" and once again program the device.
 

tobb

Member level 5
Member level 5
Joined
Sep 20, 2002
Messages
87
Helped
7
Reputation
14
Reaction score
5
Trophy points
1,288
Activity points
893
set atmega 16 fuse bits 16 mhz

I have try chip erase several times.. not thing happend .. I think I config fuse bit wrong.. and it should do some thing with clock source .. So.. at the moment I have some more ATMEGA MCU but I don't know how to make it works with external crystal .. I afraid that I will lost more CPU if you have been work with it please help me.. just how to set fuse bit .. or any program to program it... Thanks..
 

ME

Advanced Member level 4
Advanced Member level 4
Joined
Mar 14, 2002
Messages
1,309
Helped
55
Reputation
112
Reaction score
40
Trophy points
1,328
Activity points
14,859
atmega16 clock external crystal

I know this is an old post, but if you haven't found the solution read here: **broken link removed**
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Top