Datasheet

© 2006 Microchip Technology Inc. Preliminary DS70178C-page 161
dsPIC30F1010/202X
15.0 UNIVERSAL ASYNCHRONOUS
RECEIVER TRANSMITTER
(UART) MODULE
The Universal Asynchronous Receiver Transmitter
(UART) module is one of the serial I/O modules
available in the dsPIC30F1010/202X 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 inter-
faces. The module 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 U1TX and U1RX pins
• 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 Ranging from 1 Mbps to 15 bps 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
• Loopback mode for Diagnostic Support
• Support for Sync and Break Characters
• Supports Automatic Baud Rate Detection
• IrDA Encoder and Decoder Logic
• 16x Baud Clock Output for IrDA Support
A simplified block diagram of the UART is shown in
Figure 15-1. The UART module consists of these key
important hardware elements:
• Baud Rate Generator
• Asynchronous Transmitter
• Asynchronous Receiver
FIGURE 15-1: UART SIMPLIFIED 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, register descriptions and general device
functionality, refer to the “dsPIC30F Family Reference
Manual” (DS70046).
U1RX
IrDA
®
UART1 Receiver
UART1 Transmitter
U1TX
Baud Rate Generator