S912XEG128J2MAA Datasheet, PDF (184/1324 Pages) Freescale Semiconductor, Inc – Microcontrollers

Chapter 2 Port Integration Module (S12XEPIMV1)
Port J pin PJ[3] can be used for general purpose I/O.
Port J pin PJ[2] can be used for either general purpose I/O or as chip select output.
Port J pin PJ[1] can be used for either general purpose I/O, or with the SCI2 subsystem.
Port J pin PJ[0] can be used for either general purpose I/O, or with the SCI2 subsystem or as chip select
output.
2.4.3.12 Port AD0
This port is associated with the ATD0.
Port AD0 pins PAD[15:0] can be used for either general purpose I/O, or with the ATD0 subsystem.
2.4.3.13 Port AD1
This port is associated with the ATD1.
Port AD1 pins PAD[31:16] can be used for either general purpose I/O, or with the ATD1 subsystem.
2.4.3.14 Port R
This port is associated with the TIM module.
Port R pins PR[7:0] can be used for either general-purpose I/O, or with the channels of the standard Timer.
The TIM channels can be re-routed.
2.4.3.15 Port L
This port is associated with SCI7-4.
Port L pins PL[7:6] can be used for either general purpose I/O, or with SCI7 subsystem.
Port L pins PL[5:4] can be used for either general purpose I/O, or with SCI6 subsystem.
Port L pins PL[3:2] can be used for either general purpose I/O, or with SCI5 subsystem.
Port L pins PL[1:0] can be used for either general purpose I/O, or with SCI4 subsystem.
2.4.3.16 Port F
This port is associated with SCI3, IIC0 and chip selects.
Port L pins PL[7:6] can be used for either general purpose I/O, or with SCI3 subsystem.
Port L pins PL[5:4] can be used for either general purpose I/O, or with IIC0 subsystem.
Port L pins PL[3:0] can be used for either general purpose I/O, or with chip selects.
MC9S12XE-Family Reference Manual Rev. 1.25
184
Freescale Semiconductor