MC9S12HZ256 Datasheet, PDF (163/692 Pages) Freescale Semiconductor, Inc – HCS12 Microcontrollers

Chapter 4 Port Integration Module (PIM9HZ256V2)
4.5 Resets
The reset values of all registers are given in the register description in Section 4.3, “Memory Map and
Register Definition”.
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
Data
Direction
Pull Mode
A
Refer to
Pull Down
B
section Bus
Pull Down
E
Control and
Input/Output
Pull Down¹
K
Pull Down
BKGD pin
Pull Down
T
Input
Pull Down
S
Input
Hi-z
M
Input
Hi-z
P
Input
Hi-z
L
Input
Pull Down
U
Input
Hi-z
V
Input
Hi-z
AD
Input
Hi-z
1 _{PE[1:0] pins have pull-ups instead of pull-downs.}
Reset States
Red. Drive/
Slew Rate
Wired-OR
Mode
Interrupt
Refer to section Bus Control and Input/Output
Disabled
Disabled
Disabled
Disabled
Disabled
Disabled
Disabled
Disabled
N/A
Disabled
Disabled
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
Disabled
MC9S12HZ256 Data Sheet, Rev. 2.04
Freescale Semiconductor
163