MPC5604B/C Microcontroller Reference Manual, Rev. 8
238 Freescale Semiconductor
12.5 Functional description
12.5.1 General
This section provides a complete functional description of the Wakeup Unit.
12.5.2 Non-maskable interrupts
The Wakeup Unit supports one non-maskable interrupt which is allocated to the following pins:
• 100-pin LQFP: Pin 7
• 144-pin LQFP: Pin 11
• 208-pin BGA: Pin F3
The Wakeup Unit supports the generation of three types of interrupts from the NMI. The Wakeup Unit
supports the capturing of a second event per NMI input before the interrupt is cleared, thus reducing the
chance of losing an NMI event.
Each NMI passes through a bypassable analog glitch filter.
NOTE
Glitch filter control and pad configuration should be done while the NMI is
disabled in order to avoid erroneous triggering by glitches caused by the
configuration process itself.
Table 12-11. WIPUER field descriptions
Field Description
IPUE[x] External Interrupt Pullup Enable x
1 Pullup is enabled
0 Pullup is disabled
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