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The STM32C0316-DK Discovery kit goal is to provide alternative features to the corresponding NUCLEO-C031C6 board.
All 20 pins common to all STM32C0 Series microcontrollers are user‑accessible. The user can override the SWD debug pins by disconnecting the debug probe. The 5-way analog rock switch and LED can be overridden with a slide switch to be taken over by the user. All the pins are accessible through the DIP28 connector. Headers are not provided to let the user choose the header type. The 32768 Hz on‑board 1‑pin clock generator for RTC can be cut with a slide switch.
The kit helps migrate from 8‑bit to STM32C0 Series microcontrollers, and between STM32C0 Series and STM32G0 Series microcontrollers. The DIP28 pinout is designed to be as compatible as possible with the ATMEGA328 8‑bit microcontroller. The LQFP48 footprint is compatible with STM32G031/071/0B1 Series microcontrollers. The UFQFPN20 footprint is compatible with STM32C01 Series microcontrollers. The WLCSP20 footprint is compatible with STM32G051 Series microcontrollers.
The STM32C031C6 Series microcontroller can be tested over its operating range. The 5.0 to 3.3 V regulator bypass itself when its source goes lower than 3.3 V. The debug probe level shifters adjust the debug signal levels to the target microcontroller supply voltage.