DualMCU
ESP32
SKU: UE0002
MicroSD CARD
● Connected to ESP32 vía VSPI
ATECC608A
(do not populate component)
● Authentication chip connected to
ESP32 or RP2040 accessed by both
MCUs through selection pads for I2C
communication
I/O
44 x GPIO pins with following capabilities:
● 11 of which can be used as 12-bit
ADC - Analog to Digital Converter
inputs (4 from RP2040 and 7 in the
ESP32 microcontroller)
● 42 of which can be used as Digital Pin
(26 from RP2040 and 16 in the
ESP32 microcontroller)
● 3 x UART peripherals (2 UARTs in the
RP2040 and 1 in the ESP32)
● 2 x SPI (one from RP2040 and one in
the ESP32)
● 3 x I2C (Two of which have a JST-1.0
mm pitch on-board connectors,
compatible with STEMMA QT, QWIIC
and GROVE devices with no
soldering)
● All 26 digital pins of RP2040 can be
driven by the PWM block with a
maximum of 16 controllable PWM
outputs
●
All ESP32 pins digital outputs can be
used as PWM pins (GPIOs 36 and 39
can't generate PWM)
● 3 x Capacitive Touch Sensor from
ESP32 microcontroller
● ESP32 CAN 2.0
Power
● 3.3 v LDO 600 mA
● 3.3V Power/enable pin
● VUSB Output /VIN (3.2 - 6 V) Pin
● Built in 200mA+ lipoly charger with
charging status indicator LED
Connector
● 2 x I2C JST-SH (1 mm pitch)
● 1 microSD Card Holder
● 1 USB Type C
● 1 JST-SH Battery Connector (2 mm
pitch)
Switch
● Power Switch
● USB Communication Selector
● DIP Switch for UART communication
● Reset button and Bootloader select
button for RP2040 quick restarts (no
unplugging-replugging to relaunch
code)
● ESP32 Reset button and Flash/Boot
button for manually entering flash
mode
OSC
● 12 MHz crystal for perfect timing
4
Unit Electronics ® DualMCU ESP32
Modified: 26/06/2023
