DSPIC30F5015 datasheet(121/234 Pages) MICROCHIP

121 / 234 page

DS70149E-page 121

dsPIC30F5015/5016

18.0

UNIVERSAL ASYNCHRONOUS

RECEIVER TRANSMITTER

(UART) MODULE

This section describes the Universal Asynchronous

Receiver/Transmitter Communications module.

18.1

UART Module Overview

The key features of the UART module are:

• Full-duplex, 8 or 9-bit data communication

• 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 range from 38 bps to 1.875 Mbps at a

30 MHz instruction rate

• 4-word deep transmit data buffer

• 4-word deep receive data buffer

• Parity, Framing and Buffer Overrun error

detection

• Support for Interrupt only on Address Detect

(9th bit = 1)

• Separate Transmit and Receive Interrupts

• Loopback mode for diagnostic support

FIGURE 18-1:

UART TRANSMITTER BLOCK DIAGRAM

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,

descriptions

and

general device functionality, refer to the

“dsPIC30F Family Reference Manual”

(DS70046). For more information on the

device instruction set and programming,

refer to the “16-bit MCU and DSC

Programmer’s

Reference

Manual”

(DS70157).

Write

UTX8

UxTXREG Low Byte

Load TSR

Transmit Control

– Control TSR

– Control Buffer

– Generate Flags

– Generate Interrupt

Control and Status bits

UxTXIF

Data

‘0’ (Start)

‘1’ (Stop)

Parity

Generator

Transmit Shift Register (UxTSR)

16 Divider

Control

Signals

16X Baud Clock

from Baud Rate

Generator

Internal Data Bus

UTXBRK

Note: x = 1.

UxTX

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