PXD20RM Datasheet, PDF (1594/1628 Pages) Freescale Semiconductor, Inc – PXD20 Microcontroller

Field
IFE[x]
Table 49-10. WIFER field descriptions
Description
External Interrupt Filter Enable x.
Enable analog glitch filter on the external interrupt pad input.
1 Filter is enabled
0 Filter is disabled
49.4.2.9 Wakeup/Interrupt Pullup Enable Register (WIPUER)
This register is used to enable a pullup on the corresponding interrupt pads to pull an unconnected
wakeup/interrupt input to a value of ‘1’.
NOTE
Not all bits are available in all packages.
Address: 0x0034
Access: User read/write
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
R_{0 0 0 0 0 0}
W
Reset _{0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0}
Figure 49-11. Wakeup/Interrupt Pullup Enable Register (WIPUER)
Table 49-11. WIPUER field descriptions
Field
IPUE[x]
External Interrupt Pullup Enable x.
1 Pullup is enabled
0 Pullup is disabled
Description
49.5 Functional description
49.5.1 WKPU behavior
The WKPU provides external internal interrupts and low-power wakeups for the chip. It is possible to use
the connected pins to raise an interrupt, a wakeup, or both. Table 49-12 describes the behavior of the chip
for various operating modes and wakeup configurations.
Table 49-12. WKPU behavior
Operating mode Wakeup Interrupt Standby restart¹ Program flow after low power mode exit
HALT
N/A
Enabled
N/A
Jump to ISR
49-10
PXD20 Microcontroller Reference Manual, Rev. 1
Preliminary—Subject to Change Without Notice
Freescale Semiconductor