
MC68HC908QL4 MC68HC908QL3 MC68HC908QL2 Data Sheet, Rev. 4
Freescale Semiconductor
203
Chapter 17
Electrical Specifications
17.1 Introduction
This section contains electrical and timing specifications.
17.2 Absolute Maximum Ratings
Maximum ratings are the extreme limits to which the microcontroller unit (MCU) can be exposed without
permanently damaging it.
NOTE
This device is not guaranteed to operate properly at the maximum ratings.
Refer to
17.5 5-V DC Electrical Characteristics
and
17.8 3.3-V DC Electrical
Characteristics
for guaranteed operating conditions.
NOTE
This device contains circuitry to protect the inputs against damage due to
high static voltages or electric fields; however, it is advised that normal
precautions be taken to avoid application of any voltage higher than
maximum-rated voltages to this high-impedance circuit. For proper
operation, it is recommended that V
IN
and V
OUT
be constrained to the
range V
SS
≤
(V
IN
or V
OUT
)
≤
V
DD
. Reliability of operation is enhanced if
unused inputs are connected to an appropriate logic voltage level (for
example, either V
SS
or V
DD
.)
Characteristic
(1)
1. Voltages references to V
SS
.
Symbol
Value
Unit
Supply voltage
V
DD
–0.3 to +6.0
V
Input voltage
V
IN
V
SS
–0.3 to V
DD
+0.3
V
Mode entry voltage, IRQ pin
V
TST
V
SS
–0.3 to +9.1
V
Maximum current per pin excluding PTA0–PTA5, V
DD
, and V
SS
I
±15
mA
Maximum current for pins PTA0–PTA5
I
PTA0—
I
PTA5
±
25
mA
Storage temperature
T
STG
–55 to +150
°
C
Maximum current out of V
SS
I
MVSS
100
mA
Maximum current into V
DD
I
MVDD
100
mA