LPC2131 View Datasheet(PDF) - Philips Electronics
Part Name
Description
MFG CO.
LPC2131
Philips Electronics
'LPC2131' PDF : 41 Pages View PDF
Philips Semiconductors
LPC2131/2132/2134/2136/2138
Single-chip 16/32-bit microcontrollers
6.13 UARTs
The LPC2131/2132/2134/2136/2138 each contain two UARTs. In addition to standard
transmit and receive data lines, the LPC2134/2136/2138 UART1 also provides a full
modem control handshake interface.
6.13.1 Features
• 16 byte Receive and Transmit FIFOs.
• Register locations conform to ‘550 industry standard.
• Receiver FIFO trigger points at 1, 4, 8, and 14 bytes
• Built-in baud rate generator.
• Standard modem interface signals included on UART1. (LPC2134/2136/2138 only)
• The LPC2131/2132/2134/2136/2138 transmission FIFO control enables
implementation of software (XON/XOFF) flow control on both UARTs and hardware
(CTS/RTS) flow control on the LPC2134/2136/2138 UART1 only.
6.14 I2C-bus serial I/O controller
The LPC2131/2132/2134/2136/2138 each contain two I2C-bus controllers.
The I2C-bus is bi-directional, 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
receivers can operate in either master or slave mode, depending on whether the chip has
to initiate a data transfer or is only addressed. The I2C-bus is a multi-master bus, it can be
controlled by more than one bus master connected to it.
The I2C-bus implemented in LPC2131/2132/2134/2136/2138 supports bit rates up to
400 kbit/s (Fast I2C).
6.14.1 Features
• Standard I2C compliant bus interface.
• Easy to configure as Master, Slave, or Master/Slave.
• Programmable clocks allow versatile rate control.
• Bidirectional data transfer between masters and slaves.
• Multi-master bus (no central master).
• Arbitration between simultaneously transmitting masters without corruption of serial
data on the bus.
• Serial clock synchronization allows devices with different bit rates to communicate via
one serial bus.
• Serial clock synchronization can be used as a handshake mechanism to suspend and
resume serial transfer.
• The I2C-bus may be used for test and diagnostic purposes.
9397 750 14868
Preliminary data sheet
Rev. 02 — 15 April 2005
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
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