LPC2114 Philips Semiconductors (Acquired by NXP), LPC2114 Datasheet - Page 18

• Manufacturer Part Number: LPC2114
• Description: Single-chip 16/32-bit Microcontrollers; 128/256 KB Isp/iap Flash With 10-bit ADCthe LPC2114/LPC2124 Are Based on a 16/32 Bit ARM7TDMI-STM Cpu With Real-time Emulation And Embedded Trace Support, Together With 128/256 Kilobytes (kB) of Embedded High S
• Manufacturer: Philips Semiconductors (Acquired by NXP)

Philips Semiconductors
9397 750 12805
Preliminary data
6.14.1 Features
6.15.1 Features
6.14 SPI serial I/O controller
6.15 General purpose timers
6.16 Watchdog timer
The LPC2114/LPC2124 each contain two SPIs. The SPI is a full duplex serial
interface, designed to be able to handle multiple masters and slaves connected to a
given bus. Only a single master and a single slave can communicate on the interface
during a given data transfer. During a data transfer the master always sends a byte of
data to the slave, and the slave always sends a byte of data to the master.
The Timer is designed to count cycles of the peripheral clock (PCLK) and optionally
generate interrupts or perform other actions at specified timer values, based on four
match registers. It also includes four capture inputs to trap the timer value when an
input signal transitions, optionally generating an interrupt. Multiple pins can be
selected to perform a single capture or match function, providing an application with
‘or’ and ‘and’, as well as ‘broadcast’ functions among them.
The purpose of the Watchdog is to reset the microcontroller within a reasonable
amount of time if it enters an erroneous state. When enabled, the Watchdog will
generate a system reset if the user program fails to ‘feed’ (or reload) the Watchdog
within a predetermined amount of time.
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Compliant with Serial Peripheral Interface (SPI) specification.
Synchronous, Serial, Full Duplex, Communication.
Combined SPI master and slave.
Maximum data bit rate of one eighth of the input clock rate.
A 32-bit Timer/Counter with a programmable 32-bit Prescaler.
Four 32-bit capture channels per timer that can take a snapshot of the timer value
when an input signal transitions. A capture event may also optionally generate an
interrupt.
Four 32-bit match registers that allow:
Four external outputs per timer corresponding to match registers, with the following
capabilities:
– Continuous operation with optional interrupt generation on match.
– Stop timer on match with optional interrupt generation.
– Reset timer on match with optional interrupt generation.
– Set LOW on match.
– Set HIGH on match.
– Toggle on match.
– Do nothing on match.
Rev. 02 — 02 February 2004
Single-chip 16/32-bit microcontrollers
LPC2114/LPC2124
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
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