Peripheral Simulation

For NXP (founded by Philips) LPC2141 — External Interrupts

Simulation support for this peripheral or feature is comprised of:

• Dialog boxes which display and allow you to change peripheral configuration.

These simulation capabilities are described below.

External Interrupts Dialog

The External Interrupts Dialog controls the interrupt support for triggering interrupts from an external source. You may use the following controls to select and configure the external interrupt settings.

Selected External Interrupt Group

• EINTx (External Interrupt Flag 0-3) is set when an external interrupt (0-3) occurs.
• EXTWAKEx (External Interrupt 0-3 Wake-Up Enable) when set allows an external interrupt to wake up the processor from Power Down mode.
• EXTMODEx (External Interrupt Mode 0-3) is set to configure the EINTx pin to be edge-sensitive. If reset, the EINTx pin is level-sensitive.
• EXTPOLARx (External Interrupt Polarity 0-3) in level-sensitive mode, is set to indicate the corresponding pin is high-active. In edge-sensitive mode, this bit is set to indicate rising-edge sensitivity.
• EXTINT (External Interrupt Flag Register) contains the EINTx interrupt flags that set when an external interrupt occurs.
• INTWAKE (Interrupt Wake-Up Register) contains the EXTWAKEx bits that allow external interrupts to wake up the MCU from Power Down mode.
• EXTMODE (External Interrupt Mode Register) contains the external interrupt mode bit settings for all EINT pins.
• EXTPOLAR (External Interrupt Polarity Register) contains the polarity settings for all EINT pins.