LPC2194 datasheet(17/33 Pages) PHILIPS

17 / 33 page

Philips Semiconductors

LPC2194

Single-chip 16/32-bit microcontrollers

Preliminary data

Rev. 01 — 06 February 2004

17 of 33

9397 750 12757

6.11 10-bit A/D converter

The LPC2194 contains a single 10-bit successive approximation analog to digital

converter with four multiplexed channels.

6.11.1

Features

• Measurement range of 0 V to 3 V.

• Capable of performing more than 400,000 10-bit samples per second.

• Burst conversion mode for single or multiple inputs.

• Optional conversion on transition on input pin or Timer Match signal.

6.12 CAN controllers and acceptance ﬁlter

The LPC2194 contains four 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 LPC2194 contains 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.

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