Microchip Technology MA300015 データシート

© 2011 Microchip Technology Inc.

DS70150E-page 119

This section describes the Universal Asynchronous
Receiver/Transmitter Communications module. 

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

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).

Write

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

Parity

Generator

    Transmit Shift Register (UxTSR)

16 Divider

Control

Signals

16X Baud Clock

from Baud Rate

Generator

Internal Data Bus

UTXBRK 

Note: x = 1 or 2. 

UxTX