The RP2040-Zero mini development board is equipped with a Type-C female port, utilizes the RP2040A developed by Raspberry Pi as the core, and leading out all unoccupied pins in a very small form factor. Using castellated processing technology, it can be welded onto your custom board.
SPI × 2
I2C × 2
UART × 2
12-bit ADC × 4
Controllable PWM channel × 16
Checkout the Waveshare RP2040 Zero Wiki here.