Microchip Technology MA330024 Data Sheet

 2009-2014 Microchip Technology Inc.

DS70000591F-page 279

The Universal Asynchronous Receiver Transmitter
(UART) module is one of the serial I/O modules
available in the dsPIC33FJ32GS406/606/608/610 and
dsPIC33FJ64GS406/606/608/610 device families. The
UART is a full-duplex, asynchronous system that can
communicate with peripheral devices, such as
personal computers, LIN/JS2602, RS-232 and RS-485
interfaces. The module also supports a hardware flow
control option with the UxCTS and UxRTS pins and
also includes an IrDA encoder and decoder.

The primary features of the UARTx module are:

• Full-Duplex, 8-Bit or 9-Bit Data Transmission 

through the UxTX and UxRX Pins

• Even, Odd or No Parity Options (for 8-bit data)
• One or Two Stop bits
• Hardware Flow Control Option with UxCTS and 

UxRTS Pins

• Fully Integrated Baud Rate Generator with 16-Bit 

Prescaler

• Baud Rates Ranging from 10 Mbps to 38 bps at

40 MIPS

• Baud Rates Ranging from 12.5 Mbps to 47 bps at 

50 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
• A Separate Interrupt for all UART Error Conditions
• Loopback mode for Diagnostic Support
• Support for Sync and Break Characters
• Support for Automatic Baud Rate Detection
• IrDA Encoder and Decoder Logic
• 16x Baud Clock Output for IrDA

®

 Support

• Support for DMA

A simplified block diagram of the UART module is
shown in 

. The UART module consists of

these key hardware elements:

• Baud Rate Generator
• Asynchronous Transmitter
• Asynchronous Receiver

Note 1: This data sheet summarizes the features

of the dsPIC33FJ32GS406/606/608/610
and dsPIC33FJ64GS406/606/608/610
families of devices. It is not intended to be
a comprehensive reference source. To
complement the information in this data
sheet, refer to “UART” (DS70188) in the
“dsPIC33/PIC24 Family Reference Man-
ual”, which is available from the Microchip
web site (

www.microchip.com

). The infor-

mation in this data sheet supersedes the
information in the FRM.

2: Some registers and associated bits

described in this section may not be
available on all devices. Refer to

 in

this data sheet for device-specific register
and bit information.

UxRX

Hardware Flow Control

UARTx Receiver

UARTx Transmitter

UxTX

Baud Rate Generator

UxRTS/BCLK

IrDA

®

UxCTS