DualMCU
ESP32
SKU: UE0002
3.12 DIP Switch for UART Communication
The DIP switch (SW3) allows the UART communication between both MCUs, connecting
RP2040-UART0 (Tx_GPIO0 & Rx_GPIO1) to ESP32-UART1 (RX_IO17 & TX_IO16)
respectively.
3.13 Power Tree
The DualMCU can be powered by either the USB-C port (J1) or alternatively via VIN on JP1.
The VIN pin also delivers the USB voltage from J1 (approx 4.8 V) when the external power
supply on the VIN does not exist. An AP2112K LDO Voltage Regulator provides 3V3 to the
RP2040 and ESP32 microcontrollers and all other peripherals. The maximum voltage supply
for VIN is 6 V and the nominal current of AP2112K is 600 mA.
DualMCU RP2040 & ESP32 Power Tree
13
Unit Electronics ® DualMCU ESP32
Modified: 26/06/2023