Guest
#2359184
Hello, I am looking for a microcontroller with 4 UART interfaces. Does anyone know of one? The best one from the Atmel family. thanks for the help
Guest
#2359190
Hi ATMega640/1280/2560 MfG Spess
Guest
#2359322
Thank you! What is the difference between ATMEGA 1280V-8AU and ATMEGA 1280-16AU ?? Is one with 8 MHz and the other with 16 MHz?
Guest
#2359339
exactly! but you can also use software uart for your porject. greets!
Guest
#2360414
hello, I have a little problem. I want to use this Display KIT160-6 with this µC Atmega1280. So I have connected the µC with a Max232, but where is RTS/CTS?.
The uart in the ATmega does not have hardware handshake. You have to implement RTS/CTS functions in software by using 2 arbitrary port-pins.
Guest
#2361823
Can I connect two microcontroller via UART with each other?
Guest
#2362099
Yes, if both are powered by the same power supply. Otherwise if you power off one of both controllers the powered off device will be powered by the TXD-Line of the other controller. This can lead to latch-up effects when the powered off device is switched on again. To avoid this you can use CD4050B gates on each RXD line or use series resistors to limit the current to below 0.5mA (which is usually "safe"). Of cause you can use a MAX232 transceiver to avoid latchup-effects too. with best regards Anja
I am looking for a microcontroller with 4 UART interfaces. Does anyone know of one? The best one from the Atmel family. How about SBC9261-I based on Atmel AT91SAM9261S processor? Or SBC6300X based on Atmel AT91SAM9263 processor? They are all good to use.
Guest
#2365881
I want to build the circuit because of AVR465 and have a little problem. I would like to not use the ATmega88 in SMD and DIL. But unfortunately this has a different pinout. Do you have to rewrite this program?