PIC24HJ12GP201 Datasheet, PDF (145/234 Pages) Microchip Technology – High-Performance, 16-Bit Microcontrollers

PIC24HJ12GP201/202
16.0 UNIVERSAL ASYNCHRONOUS
RECEIVER TRANSMITTER
(UART)
Note:
This data sheet summarizes the features
of the PIC24HJ12GP201/202 devices. It is
not intended to be a comprehensive
reference source. To complement the
information in this data sheet, refer to the
“PIC24H Family Reference Manual”.
Please see the Microchip web site
(www.microchip.com) for the latest
PIC24H Family Reference Manual
chapters.
The Universal Asynchronous Receiver Transmitter
(UART) module is one of the serial I/O modules
available in the PIC24HJ12GP201/202 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 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 Mbps 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
• A separate interrupt for all UART error conditions
• Loopback mode for diagnostic support
• Support for Sync and Break characters
• Support for automatic baud rate detection
• IrDA encoder and decoder logic
• 16x baud clock output for IrDA support
A simplified block diagram of the UART module is
shown in Figure 16-1. The UART module consists of
these key hardware elements:
• Baud Rate Generator
• Asynchronous Transmitter
• Asynchronous Receiver
FIGURE 16-1:
UART SIMPLIFIED BLOCK DIAGRAM
Baud Rate Generator
IrDA^®
BCLK
Hardware Flow Control
UART Receiver
UxRTS
UxCTS
UxRX
UART Transmitter
UxTX
© 2007 Microchip Technology Inc.
Preliminary
DS70282B-page 143