DSPIC33FJ32GP202-ESLASHSP datasheet(161/252 Pages) MICROCHIP

161 / 252 page

Preliminary

DS70290A-page 159

dsPIC33FJ32GP202/204 and dsPIC33FJ16GP304

16.0 UNIVERSAL ASYNCHRONOUS

RECEIVER TRANSMITTER

(UART)

The Universal Asynchronous Receiver Transmitter

(UART) module is one of the serial I/O modules avail-

able

the

dsPIC33FJ32GP202/204

and

dsPIC33FJ16GP304 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 1 Mbps to 15 Mbps 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

• 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 Figure 16-1. The UART module consists of

these key hardware elements:

• Baud Rate Generator

• Asynchronous Transmitter

• Asynchronous Receiver

FIGURE 16-1:

UART SIMPLIFIED BLOCK DIAGRAM

Note:

This data sheet summarizes the features

the

dsPIC33FJ32GP202/204

and

dsPIC33FJ16GP304 devices. It is not

intended to be a comprehensive reference

source. To complement the information in

this data sheet, refer to the “dsPIC33F

Family Reference Manual”.

UxRX

Hardware Flow Control

UART Receiver

UART Transmitter

UxTX

BCLK

Baud Rate Generator

UxRTS

IrDA®

UxCTS

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