MC908KX2MDWE Datasheet, PDF (202/210 Pages) Freescale Semiconductor, Inc – High-performance M68HC08 architecture, Fully upward-compatible object code with M6805, M146805, and M68HC05 Families

MC68HC08KX8
B.4.2 Functional Operating Range
Characteristic
Operating temperature range
Operating voltage range
Symbol
T_A
V_DD
Value
Unit
–40 to 105
°C
3.0 ± 10%
5.0 ± 10%
V
B.4.3 Thermal Characteristics
Characteristic
Symbol
Value
Unit
Thermal resistance
PDIP (16 pins)
SOIC (16 pins)
θ_JA
66
°C/W
95
I/O pin power dissipation
P_I/O
User determined
W
Power dissipation⁽¹⁾
P_D
P_D = (I_DD x V_DD) + P_I/O =
K/(T_J + 273°C)
W
Constant⁽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
Maximum junction temperature
T_JM
125
°C
1. Power dissipation is a function of temperature.
2. K is a constant unique to the device. K can be determined for 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.
MC68HC908KX8 • MC68HC908KX2 • MC68HC08KX8 Data Sheet, Rev. 2.1
202
Freescale Semiconductor