Specifications

Wireless-Tag Technology Co., Ltd. V1.0.0
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The UART offers a wide range of baud rates using a fractional baud rate generator.
UART supports asynchronous communication and half-duplex single-wire communication. It also supports
the LIN (local interconnection network), Smart Card Protocol and IrDA (infrared Data Association) SIR
ENDEC specifications, and modem operations (CTSn/RTSn). It also supports multiprocessor
communication. High-speed data communication is possible by using the DMA for multibuffer settings.
The features are as follows:
 Full duplex asynchronous communications
 16-byte receive and transmit FIFO
 Compatible with 16C550 standard
 Programmable receiving buffer trigger point
 Supports independent baud rate programmable for each channel
 Supports automatic baud rate detection
 12 interrupt sources
 Can use DMA
 Buffering the received/transmitted bytes in the reserved SRAM using DMA
 Built-in fractional baud rate generator covering wide range of baud rates without a need for
external crystals of particular values
 Programmable transmit and receive baud rates up to 3MHz, min. 732Hz (clock
frequency 48MHz)
 Supports hardware automatic flow control/flow control (CTSn, RTSn), RTSn control flow
trigger point can be programmed
 Modem hardware automatic control
 RS485 transmits Enable Control
 Supports CTS wake-up function
 Supports IrDASIR mode
 Supports 3/16 bit periodic modulation
 Supports RS485
 Supports 9-bit mode
 Multiprocessor communication
 Fully programmable serial interface features
 Programmable data bit number, namely 5-, 6-, 7-, 8-, 9-bit
 Parity control, odd, even, no parity or fixed parity generation and detection can be
programmed
 Stop bit length can be programmed: 1, 2 bits; 0.5, 1.5 bits supported in Smartcard
mode