MC908AZ60ACFUER Datasheet, PDF (366/414 Pages) Freescale Semiconductor, Inc – To provide the most up-to-date information, the revision of our documents on the World Wide Web will be the most current. Your printed copy may be an earlier revision. To verify you have the latest information available, refer to:

Electrical Specifications
28.1.2 Functional Operating Range
Rating
Operating Temperature Range⁽¹⁾
Operating Voltage Range
1. T_A(MAX) = 125°C for part suffix MFU/MFN
T_A(MAX) = 105°C for part suffix VFU/VFN
T_A(MAX) = 85°C for part suffix CFU/CFN
Symbol
T_A
V_DD
Value
–40 to T_A(MAX)
5.0 ± 0.5
Unit
°C
V
NOTE
For applications which use the LVI, Freescale guarantees the functionality
of the device down to the LVI trip point (V_LVI) within the constraints outlined
in Chapter 16 Low-Voltage Inhibit (LVI).
28.1.3 Thermal Characteristics
Characteristic
Symbol
Value
Unit
Thermal Resistance
QFP (64 Pins)
θ_JA
70
°C/W
Thermal Resistance
PLCC (52 Pins)
θ_JA
50
°C/W
I/O Pin Power Dissipation
P_I/O
User Determined
W
Power Dissipation (see Note 1)
P_D
P_D = (I_DD x V_DD) + P_I/O =
K/(T_J + 273 °C)
W
Constant (see Note 2)
K
P_D x (T_A + 273 °C)
+ (P_D2 x θ_JA)
W/°C
Average Junction Temperature
T_J
T_A + P_D x θ_JA
°C
1. Power dissipation is a function of temperature.
2. K is a constant unique to the device. K can be determined from a known T_A and measured P_D. With this value of K, P_D and
T_J can be determined for any value of T_A.
MC68HC908AZ60A • MC68HC908AS60A • MC68HC908AS60E Data Sheet, Rev. 6
366
Freescale Semiconductor