: A 10K resistor is connected to the Silent (S) pin. This ensures that if the pin is left floating by an unprogrammed MCU, the chip defaults to a safe, low-power silent state to protect the bus.
To use the WCMCU-1051, you need a microcontroller with a CAN controller (or an external one like MCP2515). VCC →right arrow GND →right arrow TX →right arrow CAN_TX Pin (e.g., Pin on ESP32 or TX on MCP2515) RX →right arrow CAN_RX Pin (e.g., Pin on ESP32 or RX on MCP2515) CANH/CANL →right arrow Connect to the CAN Bus network 2. Automotive Diagnosis (OBDII)
Excellent ESD resistance and short-circuit protection Low Power Consumption: Standby mode consumption WCMCU-1051 Pinout Description wcmcu1051
: Reliable machine-to-machine (M2M) communication in factories.
: Integrated TXD dominant time-out function, thermal shutdown, and overvoltage protection on bus pins. : A 10K resistor is connected to the Silent (S) pin
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Many modern chips like the ESP32 feature an integrated internal CAN Controller (often documented as the Two-Wire Automotive Interface, or TWAI). To form a functional CAN node, you simply need to bridge it with the WCMCU1051. WCMCU1051 Pin ESP32 Pin Target Transceiver Power Supply GND Ground Reference VIO I/O Logic Reference Matching ESP32 TXD GPIO 22 (or custom TWAI TX) Transmit Data Path RXD GPIO 21 (or custom TWAI RX) Receive Data Path VCC →right arrow GND →right arrow TX →right
The WCMCU-1051 is a significant upgrade over older transceivers like the TJA1050 or MCP2551.
In this grounded story, the is an ancient, out-of-production controller that runs the entire power grid of a decaying industrial city.