| Oh no, you have to buy the AVR128DB32 instead. /s. I think Microchip's at fault for breaking the convention. I fully admit that "AVR_flash_family" is kind of a nonsense convention. Only those who have studied Microchip's modern lineup would know that AVR128DB32 and AVR64DB32 are the same chip. https://www.digikey.com/en/products/detail/microchip-technol... The AVR DB series is going strong. I'm kinda surprised the 64kB model has sold out, but 128kB Flash is fine. ------- I should note that AVR DA, DB, and DD are all _almost_ the same chip, and I personally search on all three and often just pick the cheapest. AVR DA's standout is integrated capacitive touch sensors. AVR DB's standout is 2x or 3x OpAmps. AVR DD's standout is integrated level-shifters on PortC (or perhaps more accurately: a 2nd power rail entirely that those I/O ports operate on instead), and also seems to be the cheapest. If you aren't looking for any of these specific features, then you can swap between the chips with almost no changes. Here's my search query for AVR DA, DB, or DD chips: https://www.digikey.com/en/products/filter/embedded/microcon... Looks like AVR128DA32T-I/PT is the most common at 20,000+ available. There's also cheaper 16-pin models and more expensive 48-pin or even 64-pin models all available today. So its quite a bit more scalable than the old 32-pin only ATMega328p line. ------ AVR EA just came out, but I don't understand them yet. |
Okay, I spent a bit of time going over "AVR EA"'s datasheet. Here's my conclusion:
AVR EA's ADC converter is absurdly better. 12-bits and 375kSample/sec with upto 16x programmable gain amplifier (x1, x2, x4, x8, and x16 settings).
So with 12-bit / 375kSps / x16 PGA and a 1.024V internal voltage reference, the AVR EA can accurately measure 15.6 uV (microvolts) resolution. On paper at least. And mind you, this is a _differential_ ADC (all DA, DB, DD, and EA are all differential ADCs). Also, 500uVrms noise at x16 so oversampling required to make any of these lower-end bits usable.