MC9S12HY64 Datasheet, PDF (55/792 Pages) Freescale Semiconductor, Inc – S12 Microcontrollers

Port Integration Module (S12HYPIMV1)
Table 2-1 shows all the pins and their functions that are controlled by the Port Integration Module.
NOTE
If there is more than one function associated with a pin, the priority is
indicated by the position in the table from top (highest priority) to bottom
(lowest priority).
Table 2-1. Pin Functions and Priorities
Port Pin Name
-
BKGD
AD PAD[7:0]
A PA[7:4]
PA[3]
PA[2]
Pin Function
& Priority¹
MODC ²
BKGD
AN[7:0]
KWAD[7:0]
GPIO
FP[36:33]
GPIO
FP[32]
API_EXTCLK
GPIO
FP[31]
GPIO
I/O
Description
I MODC input during RESET
I/O BDM communication pin
I ATD analog
I Key Wakeup
I/O General purpose
O LCD frontplane segment driver output
I/O General purpose
O LCD frontplane segment driver output
O API output
I/O General purpose
O LCD frontplane segment driver output
I/O General purpose
Pin Function
after Reset
BKGD
GPIO
GPIO
PA[1]
PA[0]
B PB[7:4]
PB[3:0]
FP[30]
XIRQ
O LCD frontplane segment driver output
I Non-maskable level-sensitive interrupt
GPIO
FP[29]
IRQ
GPIO
BP[3:0]
GPIO
FP[39:37,28]
GPIO
I/O General purpose
O LCD frontplane segment driver output
I Maskable level or falling edge-sensitive interrupt
I/O General purpose
O LCD backplane segment driver output
I/O General purpose
O LCD frontplane segment driver output
I/O General purpose
GPIO
MC9S12HY/HA-Family Reference Manual, Rev. 1.04
Freescale Semiconductor
55