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ManualsBrandsNXP SEMICONDUCTORS ManualsMicrocontrollers, Microprocessors & QuartzesEmbedded microcontroller LBGA 256 (17x17) 32-Bit 180 MHz I/O number 164
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LPC1850_30_20_10 All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2014. All rights reserved.
Product data sheet Rev. 6.4 — 18 August 2014 73 of 150
NXP Semiconductors
LPC1850/30/20/10
32-bit ARM Cortex-M3 microcontroller
7.14 Digital serial peripherals
7.14.1 UART
The LPC1850/30/20/10 contain one UART with standard transmit and receive data lines.
UART1 also provides a full modem control handshake interface and support for
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.
7.14.1.1 Features
• 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.
7.14.2 USART
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.
7.14.2.1 Features
• 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.
• Support for RS-485/9-bit/EIA-485 mode.
• USART3 includes an IrDA mode to support infrared communication.
• All USARTs have DMA support.
• Support for synchronous mode at a data bit rate of up to 8 Mbit/s.