LPC2292 datasheet(20/53 Pages) NXP

20 / 53 page

LPC2292_2294_7

Product data sheet

Rev. 7 — 4 December 2008

20 of 53

NXP Semiconductors

LPC2292/LPC2294

16/32-bit ARM microcontrollers with external memory interface

6.10 CAN controllers and acceptance ﬁlter

The LPC2292/LPC2294 each contain two/four CAN controllers. The 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.

6.10.1 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-bit and 29-bit RX identiﬁers for all CAN buses.

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

Standard identiﬁers.

6.11 UARTs

The LPC2292/LPC2294 each contain two UARTs. In addition to standard transmit and

receive data lines, the UART1 also provides a full modem control handshake interface.

6.11.1 Features

• 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.

• Transmission FIFO control enables implementation of software (XON/XOFF) ﬂow

control on both UARTs.

• UART1 is equipped with standard modem interface signals. This module also

provides full support for hardware ﬂow control (auto-CTS/RTS).

6.11.2 UART features available in LPC2292/LPC2294/01 only

Compared to previous LPC2000 microcontrollers, UARTs in LPC2292/LPC2294/01

introduce a fractional baud rate generator for both UARTs, enabling these microcontrollers

to achieve standard baud rates such as 115200 Bd with any crystal frequency above

2 MHz. In addition, auto-CTS/RTS ﬂow-control functions are fully implemented in

hardware.

• Fractional baud rate generator enables standard baud rates such as 115200 Bd to be

achieved with any crystal frequency above 2 MHz.

• Auto-bauding.

• Auto-CTS/RTS ﬂow-control fully implemented in hardware.

6.12 I2C-bus serial I/O 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

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