LPC1111 Datasheet, PDF (21/59 Pages) NXP Semiconductors – 32-bit ARM Cortex-M0 microcontroller; up to 32 kB flash and 8 kB SRAM

NXP Semiconductors
LPC1111/12/13/14
32-bit ARM Cortex-M0 microcontroller
Support for RS-485/9-bit mode allows both software address detection and automatic
address detection using 9-bit mode.
The UART includes a fractional baud rate generator. Standard baud rates such as
115200 Bd can be achieved with any crystal frequency above 2 MHz.
7.8.1 Features
• Maximum UART data bit rate of 3.125 MBit/s.
• 16 Byte 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.
• FIFO control mechanism that enables software flow control implementation.
• Support for RS-485/9-bit mode.
• Support for modem control.
7.9 SPI serial I/O controller
The LPC1111/12/13/14 contain two SPI controllers on the LQFP48/PLCC44 packages
and one SPI controller on the HVQFN33 packages (SPI0). Both SPI controllers support
SSP features.
The SPI controller is capable of operation on a SSP, 4-wire SSI, or Microwire bus. It can
interact with multiple masters and slaves on the bus. Only a single master and a single
slave can communicate on the bus during a given data transfer. The SPI supports full
duplex transfers, with frames of 4 bits to 16 bits of data flowing from the master to the
slave and from the slave to the master. In practice, often only one of these data flows
carries meaningful data.
7.9.1 Features
• Maximum SPI speed of 25 Mbit/s (master) or 4.17 Mbit/s (slave) (in SSP mode)
• Compatible with Motorola SPI, 4-wire Texas Instruments SSI, and National
Semiconductor Microwire buses
• Synchronous serial communication
• Master or slave operation
• 8-frame FIFOs for both transmit and receive
• 4-bit to 16-bit frame
7.10 I²C-bus serial I/O controller
The LPC1111/12/13/14 contain one I²C-bus controller.
The I²C-bus is bidirectional for inter-IC control using only two wires: a Serial Clock Line
(SCL) and a Serial DAta line (SDA). Each device is recognized by a unique address and
can operate as either a receiver-only device (e.g., an LCD driver) or a transmitter with the
capability to both receive and send information (such as memory). Transmitters and/or
LPC1111_12_13_14_1
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 01 — 16 April 2010
© NXP B.V. 2010. All rights reserved.
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