PC312XDP512F0CFVR datasheet(393/1348 Pages) FREESCALE

Part #	PC312XDP512F0CFVR

Description	HCS12X Microcontrollers

PDF	1348 Pages

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Manufacturer	FREESCALE [Freescale Semiconductor, Inc]

Direct Link	http://www.freescale.com

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393 / 1348 page

Chapter 8 Pulse-Width Modulator (S12PWM8B8CV1)

MC9S12XDP512 Data Sheet, Rev. 2.21

Freescale Semiconductor

393

8.6

Interrupts

The PWM module has only one interrupt which is generated at the time of emergency shutdown, if the

corresponding enable bit (PWMIE) is set. This bit is the enable for the interrupt. The interrupt ﬂag PWMIF

is set whenever the input level of the PWM7 channel changes while PWM7ENA = 1 or when PWMENA

is being asserted while the level at PWM7 is active.

In stop mode or wait mode (with the PSWAI bit set), the emergency shutdown feature will drive the PWM

outputs to their shutdown output levels but the PWMIF ﬂag will not be set.

A description of the registers involved and affected due to this interrupt is explained in Section 8.3.2.15,

“PWM Shutdown Register (PWMSDN)”.

The PWM block only generates the interrupt and does not service it. The interrupt signal name is PWM

interrupt signal.

PC312XDP512F0CFVR Datasheet(PDF) 393 Page - Freescale Semiconductor, Inc