Electronics > Microcontrollers

MCUs with different IO voltages

(1/6) > >>

axemaster:
Hi all! As I'm sure you all know, it is very common for FPGAs to have IO banks with multiple IO voltages. This makes it easy to interface with 3.3V and 1.8V logics for example.

Are there any popular/common MCU families with this feature? It's such a nice thing to have...

igendel:
The 8-bit AVR DB family has one "Multi Voltage IO" port (the entire port will work with a separate voltage from the rest of the MCU)
https://www.microchip.com/en-us/products/microcontrollers-and-microprocessors/8-bit-mcus/avr-mcus/avr-db

harerod:
Igendel, thanks, I wasn't aware of that device family. Interfacing between 3V3 and 5V is usually not a problem, but this device could work as a glue logic for anything between 1V8..5V. If I read the datasheet correctly, there is only up to one 8bit-port with separate VDDIO, though.
And the best part: digikey.com actually has those AVR*DB in stock. Under normal circumstances I wouldn't look at any AVR, but the ATtiny0 series, but as long as STM32 are close to unobtanium...

JPortici:

--- Quote from: igendel on September 25, 2021, 04:36:17 pm ---The 8-bit AVR DB family has one "Multi Voltage IO" port (the entire port will work with a separate voltage from the rest of the MCU)
https://www.microchip.com/en-us/products/microcontrollers-and-microprocessors/8-bit-mcus/avr-mcus/avr-db

--- End quote ---

finally.

errorprone:
The LPC804M111JDH24 also has this feature. It’s not in every part of the family though. https://www.nxp.com/products/processors-and-microcontrollers/arm-microcontrollers/general-purpose-mcus/lpc800-cortex-m0-plus-/low-cost-microcontrollers-mcus-based-on-arm-cortex-m0-plus-core:LPC80X

Navigation

[0] Message Index

[#] Next page

There was an error while thanking
Thanking...
Go to full version