mc9s12xd256 Freescale Semiconductor, Inc, mc9s12xd256 Datasheet - Page 810

• Manufacturer Part Number: mc9s12xd256
• Description: Hcs12x Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Chapter 22 DP512 Port Integration Module (S12XDP512PIMV2)
22.2
This section lists and describes the signals that do connect off-chip.
22.2.1
Table 22-1
“Functional Description”
810
Port
—
A
B
C
D
External Signal Description
Pin Name
PB[7:1]
PC[7:0]
PD[7:0]
PA[7:0]
BKGD
shows all the pins and their functions that are controlled by the PIM. Refer to
PB[0]
Signal Properties
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).
Pin Function
and Priority
ADDR[15:8]
DATA[15:8]
ADDR[7:1]
IVD[15:8]
DATA[7:0]
IVD[7:1]
ADDR[0]
MODC
BKGD
IVD0
GPIO
GPIO
GPIO
GPIO
GPIO
UDS
mux
mux
mux
Table 22-1. Pin Functions and Priorities (Sheet 1 of 7)
for the availability of the individual pins in the different package options.
2
1
2
2
MC9S12XDP512 Data Sheet, Rev. 2.17
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
O
O
O
O
I
MODC input during RESET
S12X_BDM communication pin
High-order external bus address output
(multiplexed with IVIS data)
General-purpose I/O
Low-order external bus address output
(multiplexed with IVIS data)
General-purpose I/O
Low-order external bus address output
(multiplexed with IVIS data)
Upper data strobe
General-purpose I/O
High-order bidirectional data input/output
Configurable for reduced input threshold
General-purpose I/O
Low-order bidirectional data input/output
Configurable for reduced input threshold
General-purpose I/O
NOTE
Description
Freescale Semiconductor
Section 22.4,
Pin Function
after Reset
dependent
dependent
dependent
dependent
BKGD
Mode
Mode
Mode
Mode
3
3
3
3