ARM, RISC-V контроллеры

В этом документе пишут:

https://www.st.com/resource/en/reference_manual/rm0008-stm32f101xx-stm32f102xx-stm32f103xx-stm32f105xx-and-stm32f107xx-advanced-armbased-32bit-mcus-stmicroelectronics.pdf

Digital-to-analog converter (DAC) Medium-density devices are STM32F101xx, STM32F102xx and STM32F103xx microcontrollers where the Flash memory density ranges between 64 and 128 Kbytes

Здесь в "Table 3. STM32F103xx family"

https://www.st.com/resource/en/datasheet/stm32f103c8.pdf

DAC есть только в High-density devices от 256 KB Flash