LPC2212 datasheet(17/45 Pages) NXP

17 / 45 page

LPC2212_2214_4

Product data sheet

Rev. 04 — 3 January 2008

17 of 45

NXP Semiconductors

LPC2212/2214

16/32-bit ARM microcontrollers

6.9 10-bit ADC

The LPC2212/2214 each contain a single 10-bit successive approximation ADC with four

multiplexed channels.

6.9.1 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.

6.9.2 ADC features available in LPC2212/2214/01 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).

6.10 UARTs

The LPC2212/2214 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.

• 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).

6.10.2 UART features available in LPC2212/2214/01 only

Compared to previous LPC2000 microcontrollers, UARTs in LPC2212/2214/01 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.

LPC2212 Datasheet(PDF) 17 Page - NXP Semiconductors