STMicroelectronics STM32F0 series, ARM Cortex-M0, 32-bit, 48MHz, 32KB Flash, 6K x 8 RAM, 26 I/O, CANbus, USB, 1.65V to 3.6V, -40°C to 85°C, 32-UFQFPN (5x5) exposed pad.
| Parameter | Value |
|---|---|
| Series | STM32F0 |
| Mounting | Surface Mount |
| Oscillator type | Internal |
| Program memory type | FLASH |
| Voltage - supply (Vcc (Vdd)) | 1.65V ~ 3.6V |
| Operating temperature | -40°C ~ 85°C (TA) |
| Speed | 48MHz |
| Package | Tray |
| RAM size | 6K x 8 |
| Core size | 32-Bit Single-Core |
| Peripherals | DMA, I²S, POR, PWM, WDT |
| Connectivity | CANbus, HDMI-CEC, I²C, IrDA, LINbus, SPI, UART/USART, USB |
| Number of i (O) | 26 |
| Core processor | ARM® Cortex®-M0 |
| Case | 32-UFQFN Exposed Pad |
| Data converters | A/D 13x12b |
| Program memory size | 32KB (32K x 8) |
The STM32F042K6U6: The 48 MHz core clock is the ceiling for this Cortex-M0.
The pad is electrically connected to VSS on the die — do not float it, and ensure the PCB land pattern matches the supplier package drawing for solder-joint reliability.
No last-time-buy risk or obsolescence concern for new designs.
Yes, the connectivity set includes USB 2.0, and the internal oscillator is trimmed to 48 MHz — the exact clock required for USB full-speed operation — so no external crystal is needed for USB device mode.
The STM32F042C6 is the same die in a 48-pin LQFP package with more GPIO (38 I/O vs 26) and a wider ADC channel count. The STM32F042K6U6 in the 32-UFQFPN saves board area at the cost of I/O count — choose the K6U6 when space is tight and 26 pins suffice.