PIC32MX795F512LT-80ISLASHPF datasheet(147/256 Pages) MICROCHIP

147 / 256 page

DS61156G-page 147

PIC32MX5XX/6XX/7XX

19.0 UNIVERSAL ASYNCHRONOUS

RECEIVER TRANSMITTER

(UART)

The UART module is one of the serial I/O modules

available in PIC32MX5XX/6XX/7XX family devices.

The UART is a full-duplex, asynchronous communica-

tion channel that communicates with peripheral

devices and personal computers through protocols,

such as RS-232, RS-485, LIN 1.2 and IrDA®. The

module also supports the hardware flow control option,

with 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

• Even, Odd or No Parity options (for 8-bit data)

• One or two Stop bits

• Hardware auto-baud feature

• Hardware flow control option

• Fully integrated Baud Rate Generator (BRG) with

16-bit prescaler

• Baud rates ranging from 76 bps to 20 Mbps at 80

MHz

• 8-level deep First-In-First-Out (FIFO) transmit

data buffer

• 8-level deep FIFO receive data buffer

• Parity, framing and buffer overrun error detection

• Support for interrupt-only on address detect

(9th bit = 1)

• Separate transmit and receive interrupts

• Loopback mode for diagnostic support

• LIN 1.2 Protocol support

• IrDA encoder and decoder with 16x baud clock

output for external IrDA encoder/decoder support

Figure 19-1 illustrates a simplified block diagram of the

UART.

FIGURE 19-1:

UART SIMPLIFIED BLOCK DIAGRAM

Note 1:

This data sheet summarizes the features

of the PIC32MX5XX/6XX/7XX family of

devices. It is not intended to be a

comprehensive reference source. To

complement the information in this data

sheet, refer to Section 21. “Universal

Asynchronous Receiver Transmitter

(UART)”

(DS61107) in the “PIC32 Family

Reference Manual”

, which is available

from

the

Microchip

web

site

(www.microchip.com/PIC32).

Some registers and associated bits

described in this section may not be

available on all devices. Refer to

Section 4.0 “Memory Organization”

this data sheet for device-specific register

and bit information.

Baud Rate Generator

UxRX

Hardware Flow Control

UARTx Receiver

UARTx Transmitter

UxTX

UxCTS

UxRTS

BCLKx

IrDA®

Note:

Not all pins are available for all UART modules. Refer to the device-specific pin diagram for more information.

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