LPC2194 datasheet(14/40 Pages) NXP

14 / 40 page

LPC2194_5

Product data sheet

Rev. 05 — 10 December 2007

14 of 40

NXP Semiconductors

LPC2194

Single-chip 16/32-bit microcontroller

• Ports are accessible via either the legacy group of registers (GPIOs) or the group of

registers providing accelerated port access (Fast GPIOs).

6.8 10-bit ADC

The LPC2194 each contain a single 10-bit successive approximation ADC with four

multiplexed channels.

6.8.1 Features

• Measurement range of 0 V to 3 V.

• Capable of performing more than 400000 10-bit samples per second.

• Burst conversion mode for single or multiple inputs.

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

6.8.2 ADC features available in LPC2194/01 only

• Every analog input has a dedicated result register to reduce interrupt overhead.

• Every analog input can generate an interrupt once the conversion is completed.

• The ADC pads are 5 V tolerant when conﬁgured for digital I/O function(s).

6.9 CAN controllers and acceptance ﬁlter

The LPC2194 contains 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.

6.9.1 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.

6.10 UARTs

The LPC2194 each contain two UARTs. In addition to standard transmit and receive data

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

6.10.1 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.

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