Microchip Technology AC164337 Data Sheet

 2006-2014 Microchip Technology Inc.

DS70000178D-page 161

The Universal Asynchronous Receiver Transmitter
(UART) module is one of the serial I/O modules
available in the dsPIC30F1010/202X device family.
The UART is a full-duplex asynchronous system that
can communicate with peripheral devices, such as
personal computers, LIN, RS-232 and RS-485 inter-
faces. The module also includes an IrDA encoder and
decoder

.

The primary features of the UART module are:

• Full-Duplex 8 or 9-bit Data Transmission through 

the U1TX and U1RX pins

• Even, Odd or No Parity Options (for 8-bit data)

• One or Two Stop bits

• Fully Integrated Baud Rate Generator with 16-bit 

Prescaler

• Baud Rates Ranging from 1 Mbps to 15 bps at 

16 MIPS

• 4-Deep First-In-First-Out (FIFO) Transmit Data 

Buffer

• 4-Deep FIFO Receive Data Buffer

• Parity, Framing and Buffer Overrun Error Detection

• Support for 9-bit mode with Address Detect 

(9th bit = 1)

• Transmit and Receive Interrupts

• Loopback mode for Diagnostic Support

• Support for Sync and Break Characters

• Supports Automatic Baud Rate Detection

• IrDA Encoder and Decoder Logic

• 16x Baud Clock Output for IrDA Support

A simplified block diagram of the UART is shown in
Figure 15-1. The UART module consists of these key
important hardware elements:

• Baud Rate Generator

• Asynchronous Transmitter

• Asynchronous Receiver

Note:  This data sheet summarizes features of this group
of dsPIC30F devices and is not intended to be a complete
reference source. For more information on the CPU,
peripherals, register descriptions and general device
functionality, refer to the “dsPIC30F Family Reference
Manual” (DS70046).

U1RX

IrDA

®

UART1 Receiver

UART1 Transmitter

U1TX

Baud Rate Generator