PIC24FJ256GB110-I Datasheet, PDF (189/328 Pages) Microchip Technology – 64/80/100-Pin, 16-Bit Flash Microcontrollers with USB On-The-Go (OTG)

PIC24FJ256GB110 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. For more information, 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 the PIC24F 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 interfaces. The module also sup-
ports 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
UxRTS/BCLKx
UxCTS
UxRX
UARTx Transmitter
UxTX
Note: The UART inputs and outputs must all be assigned to available RPn pins before use. Please see
Section 9.4 “Peripheral Pin Select” for more information.
© 2008 Microchip Technology Inc.
Preliminary
DS39897B-page 187