Typewriter User Manual
MOTOROLA MC68340 USER’S MANUAL 11-1
This device contains protective
circuitry against damage due to
high static voltages 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 GND
or V
CC
).
SECTION 11
ELECTRICAL CHARACTERISTICS
This section contains detailed information on power considerations, DC/AC electrical
characteristics, and AC timing specifications of the MC68340. Refer to Section 12
Ordering Information and Mechanical Data for specific part numbers corresponding to
voltage, frequency, and temperature ratings.
11.1 MAXIMUM RATINGS
Rating Symbol Value Unit
Supply Voltage
1, 2
V
CC
–0.3 to +6.5 V
Input Voltage
1, 2
V
in
–0.3 to +6.5 V
Operating Temperature Range T
A
0 to 70
or
–40 to +85
°C
Storage Temperature Range T
stg
–55 to +150 °C
NOTES:
1. Permanent damage can occur if maximum ratings are exceeded. Exposure
to voltages or currents in excess of recommended values affects device
reliability. Device modules may not operate normally while being exposed to
electrical extremes.
2. Although sections of the device contain circuitry to protect against damage
from high static voltages or electrical fields, take normal precautions to
avoid exposure to voltages higher than maximum-rated voltages.
The following ratings define a range of conditions in which the device will operate without
being damaged. However, sections of the device may not operate normally while being
exposed to the electrical extremes.
11.2 THERMAL CHARACTERISTICS
Characteristic Symbol Value Unit
Thermal Resistance—Junction to Case
Ceramic 144-Pin QFP
Plastic 145-Pin PGA
θ
JC
6
TBD
°C/W
Thermal Resistance—Junction to Ambient
Ceramic 144-Pin QFP
Plastic 145-Pin PGA
θ
JA
33
27*
°C/W
* Estimated
Frees
cale Semiconductor,
I
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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