The MA112 is a USB to UART Data Bridge controller. It includes a USB 2.0 full-speed function controller, USB transceiver, and 5V to 3.3V regulator. The UART function only supports the TXD and RDX on the RS-232 connection. Better than CH340. Operates without crystal.

Features:

1. Standard USB Virtual COM Port device
2. USB Full speed (12Mbps) operation and USB specification 2.0 compliant
3. Built-in USB transceiver
4. Integrated clock recovery, no external crystal required
5. USB suspend states reported via UPD/nUPD pins
6. Line Break detection and transmission
7. Support multi-processor communication