Mikroelektronika MikroE Development Kits MIKROE-1207 Data Sheet

© 2009-2012 Microchip Technology Inc.

DS70616F-page 351

The dsPIC33EPXXX(GP/MC/MU)806/810/814 and
PIC24EPXXX(GP/GU)810/814  family of devices
contain four UART modules.
The Universal Asynchronous Receiver Transmitter
(UART) module is one of the serial I/O modules
available in the dsPIC33EPXXX(GP/MC/MU)806/810/
814 and PIC24EPXXX(GP/GU)810/814 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
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 UART module are:
• Full-Duplex, 8- 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 4.375 Mbps to 67 bps at 16x 

mode at 70 MIPS

• Baud rates ranging from 17.5 Mbps to 267 bps at 4x 

mode at 70 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
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 dsPIC33EPXXX(GP/MC/MU)806/
810/814 and PIC24EPXXX(GP/GU)810/
814 families of devices. It is not intended
to be a comprehensive reference source.
To complement the information in this
data sheet, refer to Section 17. “UART”
(DS70582) of the “dsPIC33E/PIC24E
Family Reference Manual”, which is
available from the Microchip web site
(

www.microchip.com

).

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

UART Receiver

UART Transmitter

UxTX

Baud Rate Generator

UxRTS

IrDA

®

UxCTS