LPC2119 datasheet(18/34 Pages) PHILIPS

18 / 34 page

Philips Semiconductors

LPC2119/LPC2129

Single-chip 16/32-bit microcontrollers

Product data

Rev. 03 — 22 December 2004

18 of 34

9397 750 13146

6.12 CAN controllers and acceptance ﬁlter

The

LPC2119/LPC2129 each contain two CAN controllers. The Controller Area network

(CAN) is a serial communications protocol which efficiently supports distributed real-time

control with a very high level of security. Its domain of application ranges from high speed

networks to low cost multiplex wiring.

6.12.1

Features

• Data rates up to 1 Mbit/s on each bus.

• 32-bit register and RAM access.

• Compatible with CAN speciﬁcation 2.0B, ISO 11898-1.

• Global Acceptance Filter recognizes 11 and 29-bit Rx identiﬁers for all CAN buses.

• Acceptance Filter can provide FullCAN-style automatic reception for selected

Standard identiﬁers.

6.13 UARTs

The LPC2119/LPC2129 each contain two UARTs. One UART provides a full modem

control handshake interface, the other provides only transmit and receive data lines.

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.

6.14 I2C serial I/O controller

I2C is a bi-directional bus 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. I2C is a

multi-master bus, it can be controlled by more than one bus master connected to it.

I2C implemented in LPC2119/LPC2129 supports bit rate 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).

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