I was hoping to be able to program and run a 14M2 on 3.3v Should this be possible? The reason I ask is because the graphics LCD I want to use is made to run on this voltage.
I have made a small circuit running off a USB to Serial converter set to 3.3vdc. I have successfully programmed and ran a 14M2. Literally using 5 lines of code, but it worked.
Then today, I was starting up again and I get "hardware not found on com2", I tried replaced the IC - same results. The COM port checks out fine.
So a couple of questions.
1. Am I running below spec?
2. In general, how robust are the chips? I don't mean voltage wise. I mean can the boot-loader or flash code area get corrupted, making a chip un-operable? If so, is there a good way to resurrect a failure?
3. When a chip is programmed to run a program. What happens at power on - how does the chip check to see if it going to be programmed?
new to this and learning......
I have made a small circuit running off a USB to Serial converter set to 3.3vdc. I have successfully programmed and ran a 14M2. Literally using 5 lines of code, but it worked.
Then today, I was starting up again and I get "hardware not found on com2", I tried replaced the IC - same results. The COM port checks out fine.
So a couple of questions.
1. Am I running below spec?
2. In general, how robust are the chips? I don't mean voltage wise. I mean can the boot-loader or flash code area get corrupted, making a chip un-operable? If so, is there a good way to resurrect a failure?
3. When a chip is programmed to run a program. What happens at power on - how does the chip check to see if it going to be programmed?
new to this and learning......