Wakeup Unit (WKPU)
MPC5606S Microcontroller Reference Manual, Rev. 7
Freescale Semiconductor 1237
Chapter 41
Wakeup Unit (WKPU)
41.1 Overview
The Wakeup Unit supports up to 19
1
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.
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
IPS
BUS
PADS
Interrupt
Controller
PBRIDGE
Mode /
Power Ctl
IRQs
sys wakeup
wakeup
18
PLATFORM
3
NMI / Wakeup
- Configuration
IRQ / Wakeup
- Configuration
Wakeup Unit
IOMUX
RTC, etc.
0-18
filter
filter
filter bypass
filter bypass
NMI enable
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