LPC1850FET256 NXP Semiconductors, LPC1850FET256 Datasheet - Page 80

• Manufacturer Part Number: LPC1850FET256
• Description: The LPC1850FET256 is a high-performance, cost-effective Cortex-M3 microcontroller featuring 200 kB of SRAM, and advanced peripherals including Ethernet, High Speed USB 2
• Manufacturer: NXP Semiconductors

NXP Semiconductors
LPC1850_30_20_10
Preliminary data sheet
7.14.1.1 Features
7.14.1 UART
7.14.2 USART
7.14 Digital serial peripherals
Remark: The LPC1850/30/20/10 contain one UART with standard transmit and receive
data lines.
RS-485/9-bit mode allowing both software address detection and automatic address
detection using 9-bit mode.
UART1 includes a fractional baud rate generator. Standard baud rates such as 115200 Bd
can be achieved with any crystal frequency above 2 MHz.
Remark: The LPC1850/30/20/10 contain three USARTs. In addition to standard transmit
and receive data lines, the USARTs support a synchronous mode and a smart card mode.
The USARTs include a fractional baud rate generator. Standard baud rates such as
115200 Bd can be achieved with any crystal frequency above 2 MHz.
UART1 also provides a full modem control handshake interface and support for
•
•
•
•
•
•
•
•
•
•
•
•
Power management remote wake-up frame and magic packet detection
Supports both full-duplex and half-duplex operation
– Supports CSMA/CD Protocol for half-duplex operation.
– Supports IEEE 802.3x flow control for full-duplex operation.
– Optional forwarding of received pause control frames to the user application in
– Back-pressure support for half-duplex operation.
– Automatic transmission of zero-quanta pause frame on deassertion of flow control
Support for IEEE 1588 time stamping and IEEE 1588 advanced time stamping (IEEE
1588-2008 v2).
Maximum UART data bit rate of 8 MBit/s.
16 B Receive and Transmit FIFOs.
Register locations conform to 16C550 industry standard.
Receiver FIFO trigger points at 1 B, 4 B, 8 B, and 14 B.
Built-in fractional baud rate generator covering wide range of baud rates without a
need for external crystals of particular values.
Auto baud capabilities and FIFO control mechanism that enables software flow
control implementation.
Equipped with standard modem interface signals. This module also provides full
support for hardware flow control (auto-CTS/RTS).
Support for RS-485/9-bit/EIA-485 mode (UART1).
DMA support.
full-duplex operation.
input in full-duplex operation.
All information provided in this document is subject to legal disclaimers.
Rev. 3.1 — 15 December 2011
32-bit ARM Cortex-M3 microcontroller
LPC1850/30/20/10
© NXP B.V. 2011. All rights reserved.
80 of 157