PXD10RM Datasheet, PDF (1247/1332 Pages) Freescale Semiconductor, Inc – PXD10 Microcontroller

Chapter 41
Wakeup Unit (WKPU)
41.1 Overview
The Wakeup Unit supports up to 19¹ external sources that can generate interrupts or wakeup events, of
which one can cause non-maskable interrupt requests. Figure 41-1 is a block diagram of the Wakeup Unit
and its interfaces to other system components.
The wakeup lines are mapped to the interrupt vectors as shown in Table 41-1.
Wakeup Unit
NMI / Wakeup
- Configuration
PLATFORM
AIPS
NMI enable
filter bypass
wakeup
IPS
BUS
IRQ / Wakeup
- Configuration
filter bypass
sys wakeup
IRQs
filter
18
filter
PADS
IOMUX
Mode /
Power Ctl
3
Interrupt
Controller
0-18
RTC, etc.
Figure 41-1. Wakeup Unit Block Diagram
1. Up to 19 external sources in the 176-pin and the 208BGA packages; up to 17 external sources in the 144-pin packages
Freescale Semiconductor
PXD10 Microcontroller Reference Manual, Rev. 1
Preliminary—Subject to Change Without Notice
41-1