PIC24FV16KM204 Datasheet, PDF (173/336 Pages) Microchip Technology – General Purpose, 16-Bit Flash Microcontroller with XLP Technology Data Sheet

PIC24FV16KM204 FAMILY
15.0 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 reference
source. For more information on the Univer-
sal 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
• 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
(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 UARTx module is
shown in Figure 15-1. The UARTx module consists of
these important hardware elements:
• Baud Rate Generator
• Asynchronous Transmitter
• Asynchronous Receiver
Note:
Throughout this section, references to
register and bit names that may be asso-
ciated with a specific USART module are
referred to generically by the use of ‘x’ in
place of the specific module number.
Thus, “UxSTA” might refer to the USART
Status register for either USART1 or
USART2.
FIGURE 15-1:
UARTx MODULE SIMPLIFIED BLOCK DIAGRAM
Baud Rate Generator
IrDA^®
Hardware Flow Control
UARTx Receiver
UARTx Transmitter
UxBCLK
UxRTS
UxCTS
UxRX
UxTX
 2013 Microchip Technology Inc.
Advance Information
DS33030A-page 173