PXD10RM Datasheet, PDF (1249/1332 Pages) Freescale Semiconductor, Inc – PXD10 Microcontroller

— independent interrupt mask
— edge detection
— configurable system wakeup triggering from all interrupt sources
— configurable pullup
• On-chip wakeup support
— up to 18 wakeup sources
— wakeup status mapped to same register as external wakeup/interrupt status
41.3 External signal description
The Wakeup Unit has 19 signal inputs that can be used as external interrupt sources in normal run mode
or as system wakeup sources in certain power down modes.
These 19 external signal inputs include one signal input that can be used as a non-maskable interrupt
source in normal run mode or a system wakeup sources in certain power down modes.
NOTE
Be aware that the Wake-up pins are enabled in ALL modes. Therefore, the
Wake-up pins should be correctly terminated to ensure minimal current
consumption. Any unused Wake-up signal input should be terminated by
using an external pull-up or pull-down, or by internal pull-up enabled at
WIPUER. Also, care has to be taken on packages where the Wake-up signal
inputs are not bonded. For these packages you must ensure the internal
pull-ups are enabled for those signals not bonded.
41.4 Memory map and register description
This section provides a detailed description of all registers accessible in the WKPU module.
41.4.1 Memory Map
Table 41-2 gives an overview on the WKPU registers implemented.
Table 41-2. WKPU Memory Map
Address Offset
0x0000
0x0004 - 0x0007
0x0008
0x000C - 0x0013
0x0014
0x0018
0x001C
Use
NMI Status Flag Register
Reserved
NMI Configuration Register
Reserved
Wakeup/Interrupt Status Flag Register
Interrupt Request Enable Register
Wakeup Request Enable Register
Abbreviation
Size
Supported
Access Sizes
NSR
32
32/16/8
NCR
32
32/16/8
WISR
32
32
IRER
32
32
WRER
32
32
Freescale Semiconductor
PXD10 Microcontroller Reference Manual, Rev. 1
Preliminary—Subject to Change Without Notice
41-3