Wakeup Unit (WKPU)
MPC5606S Microcontroller Reference Manual, Rev. 7
1248
Freescale Semiconductor
Figure 41-12. External Interrupt Pad Diagram
All of the external interrupt pads within a single group have equal priority. It is the responsibility of the
user software to search through the group of sources in the most appropriate way for their application.
NOTE
Glitch filter control and pad configuration should be done while the external
interrupt line is disabled in order to avoid erroneous triggering by glitches
caused by the configuration process itself.
41.5.3.1
External Interrupt Management
Each external interrupt can be enabled or disabled independently. This can be performed using a single
rolled up register (
). A pad defined as an external interrupt can be configured by the user to
recognize external interrupts with an active rising edge, an active falling edge or both edges being active.
NOTE
Writing a 0 to both IREE[x] and IFEE[x] disables the external interrupt
functionality for that pad completely (i.e. no system wakeup or interrupt will
be generated on any activity on that pad)!
The active IRQ edge is controlled by the users through the configuration of the registers WIREER and
WIFEER.
Each external interrupt supports an individual flag which is held in the flag register (WISR). This register
is a clear-by-write-1 register type, preventing inadvertent overwriting of other flags in the same register.
Interr
upt
C
ontr
o
lle
r
Int
Vectors
Pads
WIREER[17:0]
Interrupt Edge Enable
WIFEER[17:0]
Falling
Rising
Edge Detection
Analog Glitch Filter
WIFER[17:0]
Glitch Filter enable
Interrupt enable
OR
OR
OR
IRQ_17_16
IRQ_15_08
IRQ_07_00
Flag[17:16]
Flag[15:8]
WISR[17:0]
Flag[7:0]
WRER[17:0]
Wakeup enable
Mode/
Pw
r Ct
l
IRER[17:0]
Содержание MPC5602S
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Страница 82: ...Memory Map MPC5606S Microcontroller Reference Manual Rev 7 80 Freescale Semiconductor...
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Страница 1213: ...System Integration Unit Lite SIUL MPC5606S Microcontroller Reference Manual Rev 7 Freescale Semiconductor 1211...
Страница 1214: ...System Integration Unit Lite SIUL MPC5606S Microcontroller Reference Manual Rev 7 1212 Freescale Semiconductor...
Страница 1238: ...Voltage Regulators and Power Supplies MPC5606S Microcontroller Reference Manual Rev 7 1236 Freescale Semiconductor...
Страница 1252: ...Wakeup Unit WKPU MPC5606S Microcontroller Reference Manual Rev 7 1250 Freescale Semiconductor...
Страница 1258: ...Registers Under Protection MPC5606S Microcontroller Reference Manual Rev 7 1256 Freescale Semiconductor...
Страница 1323: ...Register Map MPC5606S Microcontroller Reference Manual Rev 7 Freescale Semiconductor 1321...
Страница 1324: ...Register Map MPC5606S Microcontroller Reference Manual Rev 7 1322 Freescale Semiconductor...