MCUs

• CH32V003F4P6
• up to 48 MHz
• 18 GPIOs
• 16K Flash, 2K SRAM
• 8 Channel 10 bit ADC
• 1 x UART
• 1 x I2C
• SSOP-20 flatPak

• CH32V203C8T66
• up to 144 MHz
• 37 GPIOs
• 64K Flash, 20K SRAM
• 20 Channel 12 bit ADC
• 4 x UART
• 2 x I2C
• 2 x SPI
• 2 x USB
• LQFP-48 Package

AVR128DB28 microcontroller

Build your own Super Arduino - 24MHz - no crystal required

Above and beyond the ATmega328 of the UNO and Nano the ACR128DB28

Features:

• 3 UARTs
• 2 SPI buses
• 2 I2C
• Dual Power Domains - Individual GPIOs can be set in software
• for 5V or 3V3 operation for example
• Software Selectable Operating Frequency from 1 - 24MHz
• Possible overclock to 36MHz
• 1.8V to 5.5V operation
• Single pin UPDI Upload/Debug
• Many other detailed functions