Wcmcu1051

The “S” (Standby) pin on some variants of the CJMCU-1051 can be driven HIGH to disable the transmitter (Transmit Off mode) or LOW to enable it (Transmit On mode). This feature can be controlled by the ESP32 to manage power consumption.

The TJA1051T provides superior noise immunity, which is critical in noisy industrial environments.

The module is designed for simple connection. The 4-pin header connects to the MCU, while the screw terminals handle the bus connection. Description DC Power Supply GND Common Ground TX Data input from MCU to Transceiver RX Data output from Transceiver to MCU CANH CAN Bus High Line CANL CAN Bus Low Line Core Advantages: Why Use the TJA1051? wcmcu1051

: The /3 variant provides an interface directly to 3.3V microcontrollers without requiring external logic level shifters, while still powering the main CAN analog transceiver stage via a stable 5V rail. Board Pinout Configuration

: Wire VCC to the microcontroller’s 3.3V or 5V output and GND to ground. The “S” (Standby) pin on some variants of

[ Microcontroller ] [ WCMCU1051 Module ] [ CAN Bus Network ] GPIO (Output) --------------------> S (Silent Mode) CAN_TX (Pin) --------------------> TXD CAN_RX (Pin) <-------------------- RXD 3.3V / 5.0V --------------------> VCC GND --------------------> GND CANH ---------------------------> Twisted Pair Wire (CANH) CANL ---------------------------> Twisted Pair Wire (CANL) | [ 120-Ohm Resistor ] | Ground Reference

: Optional auxiliary line ground reference for the physical network shielding. The module is designed for simple connection

Because the WCMCU1051 is based on an STM32 chip, it is compatible with ST’s extensive software ecosystem.