MC9S12C_10 Datasheet, PDF (97/690 Pages) Freescale Semiconductor, Inc – Reference Manual

2.3.2.5 Port J Registers
Chapter 2 Port Integration Module (PIM9C32) Block Description
2.3.2.5.1 Port J I/O Register (PTJ)
Module Base + 0x0028
7
6
5
4
3
2
1
0
R
0
0
0
0
0
0
PTJ7
PTJ6
W
Reset
0
0
—
—
—
—
—
—
= Unimplemented or Reserved
Figure 2-32. Port J I/O Register (PTJ)
Read: Anytime.
Write: Anytime.
If the data direction bits of the associated I/O pins are set to 1, a read returns the value of the port register,
otherwise the value at the pins is read.
2.3.2.5.2 Port J Input Register (PTIJ)
Module Base + 0x0029
7
6
5
4
3
2
1
0
R PTIJ7
PTIJ6
0
0
0
0
0
0
W
Reset
0
0
—
—
—
—
—
—
= Unimplemented or Reserved
Figure 2-33. Port J Input Register (PTIJ)
Read: Anytime.
Write: Never, writes to this register have no effect.
This register always reads back the status of the associated pins. This can be used to detect overload or
short circuit conditions on output pins.
Freescale Semiconductor
MC9S12C-Family / MC9S12GC-Family
97
Rev 01.24