mc9s12hz256v2 Freescale Semiconductor, Inc, mc9s12hz256v2 Datasheet - Page 625

• Manufacturer Part Number: mc9s12hz256v2
• Description: Hcs12 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

A.1.4
Power supply must maintain regulation within operating V
operating maximum current conditions. If positive injection current (V
injection current may flow out of VDD5 and could result in external power supply going out of regulation.
Ensure external VDD5 load will shunt current greater than maximum injection current. This will be the
greatest risk when the MCU is not consuming power; e.g. if no system clock is present, or if clock rate is
very low which would reduce overall power consumption.
A.1.5
Absolute maximum ratings are stress ratings only. A functional operation under or outside those maxima
is not guaranteed. Stress beyond those limits may affect the reliability or cause permanent damage of the
device.
This device contains circuitry protecting against damage due to high static voltage or electrical fields;
however, it is advised that normal precautions be taken to avoid application of any voltages higher than
maximum-rated voltages to this high-impedance circuit. Reliability of operation is enhanced if unused
inputs are tied to an appropriate logic voltage level (e.g., either V
Freescale Semiconductor
1
Num
Beyond absolute maximum ratings device might be damaged.
10
11
12
13
14
1
2
3
4
5
6
7
8
9
Current Injection
Absolute Maximum Ratings
I/O, Regulator and Analog Supply Voltage
Digital Logic Supply Voltage
PLL Supply Voltage
Voltage difference VDDX1 to VDDX2 to VDDM and
VDDA
Voltage difference VSSX to VSSR and VSSA
Digital I/O Input Voltage
Analog Reference
XFC, EXTAL, XTAL inputs
TEST input
Instantaneous Maximum Current
Single pin limit for all digital I/O pins except PU and PV
3
Instantaneous Maximum Current
Single pin limit for Port PU and PV
Instantaneous Maximum Current
Single pin limit for XFC, EXTAL, XTAL
Instantaneous Maximum Current
Single pin limit for TEST
Storage Temperature Range
2
Rating
Table A-1. Absolute Maximum Ratings
6
MC9S12HZ256 Data Sheet, Rev. 2.05
2
4
5
DD5
V
Symbol
V
V
RH,
V
DDPLL
V
V
VDDX
T
VSSX
V
TEST
I
I
DD5
I
I
DL
DT
or V
DD
ILV
stg
D
D
IN
V
SS5
RL
DD
or V
in
1
range during instantaneous and
> V
–0.25
–0.3
–0.3
–0.3
–0.3
–0.3
–0.3
–0.3
–0.3
–0.3
– 65
DD5
Min
–25
–55
–25
Appendix A Electrical Characteristics
DD5
).
) is greater than I
Max
10.0
+25
+55
+25
155
6.0
3.0
3.0
0.3
0.3
6.0
6.0
3.0
0
Unit
mA
mA
mA
mA
V
V
V
V
V
V
V
V
V
C
DD5
, the
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