PIC24F16KL402 Datasheet, PDF (149/260 Pages) Microchip Technology – Low-Power, Low-Cost, General Purpose 16-Bit Flash Microcontrollers with nanoWatt XLP Technology

PIC24F16KL402 FAMILY
18.0 UNIVERSAL ASYNCHRONOUS
RECEIVER TRANSMITTER
(UART)
Note:
This data sheet summarizes the features
of this group of PIC24F devices. It is not
intended to be a comprehensive refer-
ence source. For more information on the
Universal Asynchronous Receiver
Transmitter, refer to the “PIC24F Family
Reference Manual”, Section 21. “UART”
(DS39708).
The Universal Asynchronous Receiver Transmitter
(UART) module is one of the serial I/O modules
available in this PIC24F device family. The UART is a
full-duplex, asynchronous system that can communicate
with peripheral devices, such as personal computers,
LIN/J2602, RS-232 and RS-485 interfaces. This 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-Bit 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 (IBRG) with
16-Bit Prescaler
• Baud Rates Ranging from 1 Mbps to 15 bps at
16 MIPS
• Two-Level Deep, First-In-First-Out (FIFO)
Transmit Data Buffer
• Two-Level Deep, FIFO Receive Data Buffer
• Parity, Framing and Buffer Overrun Error
Detection
• Support for 9-Bit mode with Address Detect
(9^th 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 18-1. The UART module consists of these
important hardware elements:
• Baud Rate Generator
• Asynchronous Transmitter
• Asynchronous Receiver
FIGURE 18-1:
UART SIMPLIFIED BLOCK DIAGRAM
Baud Rate Generator
IrDA^®
Hardware Flow Control
UARTx Receiver
UARTx Transmitter
UxBCLK
UxRTS
UxCTS
UxRX
UxTX
 2011 Microchip Technology Inc.
DS31037B-page 149