CSM9S12XDT512SLK Freescale Semiconductor, CSM9S12XDT512SLK Datasheet - Page 945
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CSM9S12XDT512SLK
Manufacturer Part Number
CSM9S12XDT512SLK
Description
KIT STUDENT LEARNING 16BIT
Manufacturer
Freescale Semiconductor
Datasheet
1.MC9S12XD64CAA.pdf
(1348 pages)
Specifications of CSM9S12XDT512SLK
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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Routed
PIFP[7:0]
Reset
Each flag is set by an active edge on the associated input pin. This could be a rising or a falling
edge based on the state of the PPSP register. To clear this flag, write logic level “1” to the
corresponding bit in the PIFP register. Writing a “0” has no effect.
Field
23.0.5.46 Port H Data Register (PTH)
Read: Anytime.
Write: Anytime.
Port H pins 7–0 are associated with the SCI4 as well as the routed SPI1 and SPI2.
These pins can be used as general purpose I/O when not used with any of the peripherals.
If the data direction bits of the associated I/O pins are set to logic level “1”, a read returns the value
of the port register, otherwise the buffered pin input state is read.
The routed SPI2 function takes precedence over the SCI4 and the general purpose I/O function if
the routed SPI2 module is enabled. Refer to SPI section for details.The routed SPI1 function takes
precedence over the general purpose I/O function if the routed SPI1 is enabled. Refer to SPI section
for details.
The SCI4 function takes precedence over the general purpose I/O function if the SCI4 is enabled
7–0
SCI
SPI
W
R
PTH7
Interrupt Flags Port P
0 No active edge pending. Writing a “0” has no effect.
1 Active edge on the associated bit has occurred (an interrupt will occur if the associated enable bit is set).
SS2
7
0
Writing a logic level “1” clears the associated flag.
PTH6
SCK2
0
6
Figure 23-48. Port H Data Register (PTH)
Table 23-44. PIFP Field Descriptions
MOSI2
PTH5
TXD4
5
0
MISO2
RXD4
PTH4
0
4
Description
PTH3
SS1
3
0
PTH2
SCK1
0
2
MOSI1
PTH1
1
0
MISO1
PTH0
0
0
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