LFDAS12XSFT Freescale Semiconductor, LFDAS12XSFT Datasheet - Page 93
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LFDAS12XSFT
Manufacturer Part Number
LFDAS12XSFT
Description
HARDWARE MC9S12XS 80-PIN
Manufacturer
Freescale Semiconductor
Datasheet
1.LFDAS12XSCT.pdf
(738 pages)
Specifications of LFDAS12XSFT
Module/board Type
*
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With/related Products
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1
2.3.28
Freescale Semiconductor
Address 0x0249
Read: Anytime.
Write: Anytime.
DDRS
DDRS
DDRS
Field
Field
PTIS
Reset
7-0
7-4
3-2
1-0
W
R
Port S input data—
A read always returns the buffered input state of the associated pin. It can be used to detect overload or short circuit
conditions on output pins.
Port S data direction—
This bit determines whether the associated pin is an input or output.
Depending on the configuration of the enabled SPI0 the I/O state will be forced to be input or output. In this case the
data direction bit will not change.
1 Associated pin configured as output
0 Associated pin configured as input
Port S data direction—
This bit determines whether the associated pin is an input or output.
Depending on the configuration of the enabled SCI1 the I/O state will be forced to be input or output. In this case the
data direction bit will not change.
1 Associated pin configured as output
0 Associated pin configured as input
Port S data direction—
This bit determines whether the associated pin is an input or output.
Depending on the configuration of the enabled SCI0 the I/O state will be forced to be input or output. In this case the
data direction bit will not change.
1 Associated pin configured as output
0 Associated pin configured as input
DDRS7
Port S Data Direction Register (DDRS)
0
7
DDRS6
0
6
Figure 2-26. Port S Data Direction Register (DDRS)
Table 2-25. DDRS Register Field Descriptions
Table 2-24. PTIS Register Field Descriptions
S12XS Family Reference Manual, Rev. 1.11
DDRS5
0
5
DDRS4
0
4
Description
Description
DDRS3
3
0
DDRS2
0
Port Integration Module (S12XSPIMV1)
2
DDRS1
Access: User read/write
0
1
DDRS0
0
0
93
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