lpc2377 NXP Semiconductors, lpc2377 Datasheet - Page 24

• Manufacturer Part Number: lpc2377
• Description: Single-chip 16-bit/32-bit Microcontroller; 512 Kb ?ash With Isp/iap, Ethernet, Usb 2.0, Can, And 10-bit Adc/dac
• Manufacturer: NXP Semiconductors

NXP Semiconductors
LPC2377_78_4
Product data sheet
7.15.1 Features
7.16.1 Features
7.17.1 Features
7.15 UARTs
7.16 SPI serial I/O controller
7.17 SSP serial I/O controller
The LPC2377/78 contains four UARTs. In addition to standard transmit and receive data
lines, UART1 also provides a full modem control handshake interface.
The UARTs include a fractional baud rate generator. Standard baud rates such as 115200
can be achieved with any crystal frequency above 2 MHz.
The LPC2377/78 contains one SPI controller. SPI is a full duplex serial interface designed
to handle multiple masters and slaves connected to a given bus. Only a single master and
a single slave can communicate on the interface during a given data transfer. During a
data transfer the master always sends 8 bits to 16 bits of data to the slave, and the slave
always sends 8 bits to 16 bits of data to the master.
The LPC2377/78 contains two SSP controllers. The SSP controller is capable of operation
on a SPI, 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 SSP 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.
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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).
UART3 includes an IrDA mode to support infrared communication.
Compliant with SPI specification
Synchronous, Serial, Full Duplex Communication
Combined SPI master and slave
Maximum data bit rate of one eighth of the input clock rate
8 bits to 16 bits per transfer
Compatible with Motorola SPI, 4-wire TI SSI, and National Semiconductor Microwire
buses
Rev. 04 — 19 November 2008
Single-chip 16-bit/32-bit microcontroller
LPC2377/78
© NXP B.V. 2008. All rights reserved.
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