TTL UART to CAN Mini Module

This TTL UART to CAN module has a high-performance MCU and a CAN transceiver chip, making it small, low-power, and easy to embed into various projects. It includes a built-in protocol for TTL and CAN conversion, allowing for easy data communication conversion between TTL and CAN interfaces through simple configuration steps.

Operating on a 3.3V voltage for the TTL interface, the module is compatible with both CAN 2.0A (standard frame) and CAN 2.0B (extended frame). It features fourteen configurable filters, allowing it to receive only the specific range and type of CAN bus data needed. You can select from four operating modes: transparent conversion, transparent with identifiers conversion, format conversion, and Modbus RTU protocol conversion.

Features

• Onboard high-performance MCU and CAN transceiver chip, small in size, low power and easy to integrate
• Built-in TTL and CAN conversion protocol algorithm, enabling data conversion communication between TTL and CAN via simple configuration
• Supports 3.3V operating voltage on TTL interface, supports both CAN 2.0A (standard frame) and CAN 2.0B (extended frame) on CAN interface
• Supports 14 sets of configurable filters, can only receive CAN bus data in specific range and type via configuration
• Supports 4 operating modes: transparent conversion, transparent with identifiers conversion, format conversion, and Modbus RTU protocol conversion
• Supports offline detection and automatic recovery functions
• UART communication baudrate: 1200bps～460800bps
• CAN communication baud rate: 10kbps~1000kbps, configurable
• Up to 1000 frames CAN buffer for buffering transmission data to prevent data loss
• Supports high-speed conversion, the CAN transmission speed can reach up to 1270 extended frames per second with the UART at 115200bps and CAN at 250kbps (close to the theoretical max value of 1309), and can exceed 5000 extended frames per second with the UART at 460800bps and CAN at 1000kbps
• Supports device firmware upgrade via TTL, more convenient for firmware update and function customisation

What's on Board

Resources

• Product Wiki
• WS-TTL-CAN User Manual

Pinout

NO.	PIN DEFINITION	DESCRIPTION
1	UART_LED	TTL communication indicator signal pin, high level for no data, low level for data transmission
2	CAN_LED	CAN communication indicator signal pin, high level for no data, low level for data transmission
3	RUN_LED	System running indicator signal pin, toggles between high and low levels (approx. 1Hz) when the system is working normally; Outputting high level when CAN bus is abnormal
4	NC	Reserved pin, not connected
5	CAN_H	CAN differential positive, built-in 120Ω resistor
6	CAN_L	CAN differential negative, built-in 120Ω resistor
7	3.3V	Power input, 3.3V@40mA
8	GND	Ground
9	CFG	Reset/restore to factory setting, pull low within 5s for resetting or more than 5s for restoring factory setting
10	DIR	RS485 direction control
11	RXD	TTL RX
12	TXD	TTL TX

Package Contents

• 1x TTL UART To CAN Mini Module