) : Logic reference voltage. Tie this directly to your MCU's operating rail (e.g., 3.3V for ESP32/STM32 or 5V for Arduino Uno). : The low-level differential CAN bus wire. CANH : The high-level differential CAN bus wire.
The most probable scenario is that "wcmcu1051" does not correspond to an official manufacturer part number, but rather represents a transcription error or a misremembered code. When dealing with part numbers—especially those derived from physical markings on components, labels from reels, or hand-written inventory tags—small errors are common. Characters can be misread: "C" might be mistaken for "G" or vice versa, and case sensitivity can lead to confusion. In this case, existing search data points to two extremely similar and plausible candidates: and CW1051ALCM .
Due to its reliability and high speed, the WCMCU1051 is frequently found in: wcmcu1051
The (frequently cross-referenced in development communities by its highly popular manufacturing variant, the CJMCU-1051 ) is a high-speed, low-power Controller Area Network (CAN) transceiver module . It serves as the physical hardware interface between a microcontroller's CAN protocol controller and the actual differential physical bus lines. Based on the robust NXP Semiconductors TJA1051 transceiver architecture , this module is engineered for modern automotive networks, robotics, industrial automation, and DIY aerospace projects.
The CJMCU-1051 is a breakout module for a high-speed CAN transceiver. In simple terms, it's a small electronic board that allows a microcontroller, like an Arduino or ESP32, to communicate over a . The "1051" in its name is derived from its core component, the TJA1051 CAN transceiver chip. ) : Logic reference voltage
A standard microcontroller's CAN controller outputs a digital "Transmit Data" (TXD) signal. This 3.3V or 5V logic signal can't be sent directly over a long, noisy CAN bus. The TJA1051 steps in, converting the microcontroller's TXD logic signal into a on the CAN High (CANH) and CAN Low (CANL) pins. Simultaneously, it converts the differential signals it receives from the CAN bus into a "Receive Data" (RXD) logic signal for the microcontroller.
Refrigerators, washers, and dryers that connect to apps for status alerts and remote control. Regulatory Filings: It is often referenced in FCC ID database CANH : The high-level differential CAN bus wire
CANbus, TWAI using ESP32 Nano and TJA1051 - Nano ESP32 - Arduino Forum
: This typically occurs if there are less than two 120-ohm resistors on the entire network line, or if the transmission speeds configured in the master and slave firmware profiles do not match precisely.
: 5V power input required to drive the internal CAN transceiver mechanics. VIO (
It should be noted that this chip does not support bus wake-up standby mode .