Datasheet

Chapter 2 Port Integration Module (PIM9C32) Block Description
Freescale Semiconductor MC9S12C-Family / MC9S12GC-Family 97
Rev 01.24
2.3.2.5 Port J Registers
2.3.2.5.1 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)
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.
Module Base + 0x0028
76543210
R
PTJ7 PTJ6
000000
W
Reset 0 0 ——————
= Unimplemented or Reserved
Figure 2-32. Port J I/O Register (PTJ)
Module Base + 0x0029
76543210
R PTIJ7 PTIJ6 0 00000
W
Reset 0 0 ——————
= Unimplemented or Reserved
Figure 2-33. Port J Input Register (PTIJ)