PIC24FJ128GA010_09 Datasheet, PDF (139/240 Pages) Microchip Technology – 64/80/100-Pin General Purpose, 16-Bit Flash Microcontrollers

PIC24FJ128GA010 FAMILY
16.0 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. Refer to Section 21. “UART”
(DS39708) in the “PIC24F Family
Reference Manual” for more information.
The Universal Asynchronous Receiver Transmitter
(UART) module is one of the serial I/O modules
available in the PIC24F device family. The UART is a
full-duplex asynchronous system that can communi-
cate with peripheral devices, such as personal comput-
ers, LIN, RS-232 and RS-485 interfaces. The 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 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 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 16-1. The UART module consists of these key
important hardware elements:
• Baud Rate Generator
• Asynchronous Transmitter
• Asynchronous Receiver
FIGURE 16-1:
UART SIMPLIFIED BLOCK DIAGRAM
Baud Rate Generator
IrDA^®
Hardware Flow Control
UARTx Receiver
UARTx Transmitter
BCLKx
UxRTS
UxCTS
UxRX
UxTX
© 2009 Microchip Technology Inc.
DS39747E-page 139