
Chapter 4 Port Integration Module (PIM9HZ256V2)
MC9S12HZ256 Data Sheet, Rev. 2.05
Freescale Semiconductor
163
4.5
Resets
All ports start up as general-purpose inputs on reset.
4.5.1
Reset Initialization
All registers including the data registers get set/reset asynchronously.
Table 4-41 summarizes the port
properties after reset initialization.
P
Table 4-41. Port Reset State Summary
Port
Reset States
Data
Direction
Pull Mode
Red. Drive/
Slew Rate
Wired-OR
Mode
Interrupt
A
Refer to
section Bus
Control and
Input/Output
Pull Down
Refer to section Bus Control and Input/Output
B
Pull Down
E
Pull Down1
1 PE[1:0] pins have pull-ups instead of pull-downs.
K
Pull Down
BKGD pin
Pull Down
T
Input
Pull Down
Disabled
N/A
S
Input
Hi-z
Disabled
N/A
M
Input
Hi-z
Disabled
N/A
P
Input
Hi-z
Disabled
N/A
L
Input
Pull Down
Disabled
N/A
U
Input
Hi-z
Disabled
N/A
V
Input
Hi-z
Disabled
N/A
AD
Input
Hi-z
Disabled
N/A
Disabled