ATmega329V

General discussions about V-USB, our firmware-only implementation of a low speed USB device on Atmel's AVR microcontrollers
Post Reply
Coda
Posts: 18
Joined: Thu Apr 26, 2012 10:56 pm

ATmega329V

Post by Coda » Fri Sep 21, 2012 3:55 pm

I picked up an unknown board for a couple of euros that turns out to have an ATmega329v on it, a small LCD, a couple of relays, and a few very small unidentifable ICs (could be voltage reg, temp sensor, sram, eeprom etc). I guess it might be out of a central heating control. One thing, every single pin has an exposed contact making it really easy for me to wire up a test harness. I'm going to try and dump the firmware if possible before I erase it, but I thought it would make a nice little USB project. Only problem is that it's the 'v' version, rated to 8mhz@5V. Anyone here had success with V-USB on the LCD controller specific ATmegas (169,329,649 etc)?
Top
xiangrui
Rank 1
Rank 1
Posts: 30
Joined: Sun Jan 01, 2012 5:19 am

Re: ATmega329V

Post by xiangrui » Fri Sep 21, 2012 7:37 pm

I don't have experience with those MCUs. But most MCUs allow higher frequency than specified. I played Atmega8L (says 8M) and Atmega168 (says 10M) at 12MHz, and both worked fine.
Top
Coda
Posts: 18
Joined: Thu Apr 26, 2012 10:56 pm

Re: ATmega329V

Post by Coda » Fri Sep 21, 2012 10:40 pm

xiangrui wrote:I don't have experience with those MCUs. But most MCUs allow higher frequency than specified. I played Atmega8L (says 8M) and Atmega168 (says 10M) at 12MHz, and both worked fine.

Yeah I'm going to give it a go at 12mhz. Managed to solder an ISP harness to the board and dump the firmware and fuses, so just need to replace the 32khz crystal with a 12M. Then find a disassembler as I want to find out exactly what peripherals are on this thing :D
Top
Post Reply

Return to “V-USB”