NXP Semiconductors MPC5605BK, Reference Manual

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Chapter 12 Wakeup Unit (WKPU)
MPC5606BK Microcontroller Reference Manual, Rev. 2
Freescale Semiconductor 213
Chapter 12
Wakeup Unit (WKPU)
12.1 Overview
The Wakeup Unit supports two internal sources and as many as 27 external sources that can generate
interrupts or wakeup events, of which one can cause non-maskable interrupt requests or wakeup events.
Figure 12-1 is the block diagram of the Wakeup Unit and its interfaces to other system components.
The wakeup vector mapping is shown in Table 12-1 . All unused WKPU pins must use a pull resistor —
either pullup (internal or external) or pulldown (external) — to ensure no leakage from floating inputs.
Table 12-1. Wakeup vector mapping
Wakeup
number
Port
SIU
PCR#
Port input
function
1
(can be
used in
conjunction with
WKPU function)
WKPU IRQ to
INTC
IRQ
#
WISR
Register
2
bit
position
Package
10
0-pin QFP
14
4-pin QFP
17
6-pin QFP
WKPU0 API n/a
3
— WakeUpIRQ0 46 EIF0 31

3

3

3
WKPU1 RTC n/a
3
— EIF1 30

3

3

3
WKPU2 PA1 PCR1 NMI EIF2 29
  
WKPU3 PA2 PCR2 — EIF3 28
  
WKPU4 PB1 PCR17 CAN0RX, LIN0RX EIF4 27
  
WKPU5 PC11 PCR43 CAN1RX, CAN4RX EIF5 26
  
WKPU6 PE0 PCR64 CAN5RX EIF6 25
  
WKPU7 PE9 PCR73 CAN2RX, CAN3RX EIF7 24
  
WKPU8 PB10 PCR26 — WakeUpIRQ1 47 EIF8 23
  
WKPU9 PA4 PCR4 LIN5RX EIF9 22
  
WKPU10 PA15 PCR15 — EIF10 21
  
WKPU11 PB3 PCR19 LIN0RX EIF11 20
  
WKPU12 PC7 PCR39 LIN1RX EIF12 19
  
WKPU13 PC9 PCR41 LIN2RX EIF13 18
  
WKPU14 PE11 PCR75 LIN3RX EIF14 17
  
WKPU15 PF11 PCR91 LIN4RX EIF15 16
x
4
 