mc9s08qd4 Freescale Semiconductor, Inc, mc9s08qd4 Datasheet - Page 175

• Manufacturer Part Number: mc9s08qd4
• Description: Hcs08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Appendix A
Electrical Characteristics
A.1
This chapter contains electrical and timing specifications.
A.2
Absolute maximum ratings are stress ratings only, and functional operation at the maxima is not
guaranteed. Stress beyond the limits specified in
permanent damage to the device. For functional operating conditions, refer to the remaining tables in this
section.
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 (for instance, either V
pull-up resistor associated with the pin is enabled.
Freescale Semiconductor
Introduction
Absolute Maximum Ratings
1
2
3
Supply voltage
Maximum current into V
Digital input voltage
Instantaneous maximum current
Storage temperature range
current-limiting resistor, calculate resistance values for positive (V
voltages, then use the larger of the two resistance values.
All functional non-supply pins are internally clamped to V
Power supply must maintain regulation within operating V
operating maximum current conditions. If positive injection current (V
I
out of regulation. Ensure external V
current. This will be the greatest risk when the MCU is not consuming power. Examples are: if
no system clock is present, or if the clock rate is very low (which would reduce overall power
consumption).
Input must be current limited to the value specified. To determine the value of the required
DD
Single pin limit (applies to all port pins)
, the injection current may flow out of V
Rating
MC9S08QD4 Series MCU Data Sheet, Rev. 3
DD
Table A-1. Absolute Maximum Ratings
DD
load will shunt current greater than maximum injection
1, 2, 3
Table A-1
DD
and could result in external power supply going
Symbol
may affect device reliability or cause
V
T
I
V
DD
I
DD
stg
D
SS
In
DD
and V
range during instantaneous and
DD
–0.3 to V
DD
) and negative (V
.
–0.3 to +5.8
In
–55 to 150
SS
> V
Value
± 25
120
or V
DD
DD
) is greater than
+ 0.3
DD
) or the programmable
SS
) clamp
Unit
mA
mA
°C
V
V
175