P912XDP512F0MPVR datasheet(393/1348 Pages) FREESCALE

部件名	P912XDP512F0MPVR

功能描述	HCS12X Microcontrollers

PDF	1348 Pages

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制造商	FREESCALE [Freescale Semiconductor, Inc]

网页	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.

P912XDP512F0MPVR 数据表(PDF) 393 Page - Freescale Semiconductor, Inc