Datasheet

LPC2194 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2011. All rights reserved.
Product data sheet Rev. 6 — 14 June 2011 14 of 41
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.