lpc1778 NXP Semiconductors, lpc1778 Datasheet - Page 56

• Manufacturer Part Number: lpc1778
• Description: 32-bit Arm Cortex-m3 Microcontroller; Up To 512 Kb Flash And 96 Kb Sram; Usb Device/host/otg; Ethernet; Lcd; Emc
• Manufacturer: NXP Semiconductors

NXP Semiconductors
LPC178x_7x
Objective data sheet
7.19.1 Features
7.20.1 Features
7.19 10-bit DAC
7.20 UARTs
The LPC178x/7x contain one DAC. The DAC allows to generate a variable analog output.
The maximum output value of the DAC is VREFP.
The LPC178x/7x contain five UARTs. In addition to 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.
The UARTs include a fractional baud rate generator. Standard baud rates such as
115200 Bd can be achieved with any crystal frequency above 2 MHz.
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Individual channels can be selected for conversion.
Burst conversion mode for single or multiple inputs.
Optional conversion on transition of input pin or Timer Match signal.
Individual result registers for each ADC channel to reduce interrupt overhead.
DMA support.
10-bit DAC
Resistor string architecture
Buffered output
Power-down mode
Selectable output drive
Dedicated conversion timer
DMA support
Maximum UART data bit rate of <tbd> 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.
Fractional divider for baud rate control, auto baud capabilities and FIFO control
mechanism that enables software flow control implementation.
UART1 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).
UART3 includes an IrDA mode to support infrared communication.
All UARTs have DMA support.
All information provided in this document is subject to legal disclaimers.
Rev. 00.04 — 8 July 2010
32-bit ARM Cortex-M3 microcontroller
LPC178x/7x
© NXP B.V. 2010. All rights reserved.
56 of 112