Datasheet

Electrical Specifications
Technical Data MC68HC908JB8•MC68HC08JB8•MC68HC08JT8 — Rev. 2.3
254 Electrical Specifications Freescale Semiconductor
18.3 Absolute Maximum Ratings
Maximum ratings are the extreme limits to which the MCU can be
exposed without permanently damaging it.
NOTE: This device is not guaranteed to operate properly at the maximum
ratings. Refer to 18.6 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
REG
. Reliability of operation is enhanced
if unused inputs are connected to an appropriate logic voltage level (for
example, either V
SS
or V
REG
).
Characteristic
(1)
NOTES:
1. Voltages referenced to V
SS
Symbol Value Unit
Supply voltage
V
DD
–0.3 to +6.0 V
Input voltage
PTE4/D–, PTE3/D+
RST
, IRQ
Others
V
IN
V
SS
– 1.0 to V
DD
+0.3
V
SS
– 0.3 to V
DD
+0.3
V
SS
– 0.3 to V
REG
+0.3
V
Mode entry voltage, IRQ
pin
V
DD
+V
HI
V
SS
–0.3 to +11
V
Maximum current per pin
excluding V
DD
and V
SS
I ± 25 mA
Storage temperature
T
STG
–55 to +150 °C
Maximum current of PTD0/1
(20-pin package)
I
OL
–25 to +50 mA
Maximum current out of V
SS
I
MVSS
100 mA
Maximum current into V
DD
I
MVDD
100 mA