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LPC2292 Fiches technique(PDF) 22 Page - NXP Semiconductors |
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LPC2292 Fiches technique(HTML) 22 Page - NXP Semiconductors |
22 / 40 page Philips Semiconductors LPC2292/LPC2294 16/32-bit ARM microcontrollers with external memory interface Preliminary data Rev. 01 — 05 February 2004 22 of 40 9397 750 12748 © Koninklijke Philips Electronics N.V. 2004. All rights reserved. 6.16.1 Features • 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. 6.17 General purpose timers 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. 6.17.1 Features • 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: – Continuous operation with optional interrupt generation on match. – Stop timer on match with optional interrupt generation. – Reset timer on match with optional interrupt generation. • Four external outputs per timer corresponding to match registers, with the following capabilities: – Set LOW on match. – Set HIGH on match. – Toggle on match. – Do nothing on match. 6.18 Watchdog timer 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. 6.18.1 Features • Internally resets chip if not periodically reloaded. • Debug mode. |
Numéro de pièce similaire - LPC2292 |
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Description similaire - LPC2292 |
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