M68EVB908GB60E Freescale Semiconductor, M68EVB908GB60E Datasheet - Page 260

BOARD EVAL FOR MC9S08GB60

M68EVB908GB60E

Manufacturer Part Number
M68EVB908GB60E
Description
BOARD EVAL FOR MC9S08GB60
Manufacturer
Freescale Semiconductor
Type
MCUr
Datasheet

Specifications of M68EVB908GB60E

Contents
Module and Misc Hardware
Processor To Be Evaluated
MC9S08GB
Data Bus Width
8 bit
Interface Type
RS-232
Silicon Manufacturer
Freescale
Core Architecture
HCS08
Core Sub-architecture
HCS08
Silicon Core Number
MC9S08
Silicon Family Name
S08GB
Kit Contents
GB60 Evaluation Kit
Rohs Compliant
Yes
For Use With/related Products
MC9S08GB60
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Appendix A Electrical Characteristics
A.3
This section provides information about operating temperature range, power dissipation, and package
thermal resistance. Power dissipation on I/O pins is usually small compared to the power dissipation in
on-chip logic and voltage regulator circuits and it is user-determined rather than being controlled by the
MCU design. In order to take P
actual pin voltage and V
unusually high pin current (heavy loads), the difference between pin voltage and V
small.
The average chip-junction temperature (T
where:
For most applications, P
(if P
Solving equations 1 and 2 for K gives:
where K is a constant pertaining to the particular part. K can be determined from equation 3 by measuring
P
solving equations 1 and 2 iteratively for any value of T
260
D
(at equilibrium) for a known T
I/O
T
θ
P
P
P
JA
D
int
I/O
A
is neglected) is:
= Ambient temperature, °C
= P
1
2
= Package thermal resistance, junction-to-ambient, °C/W
= I
= Power dissipation on input and output pins — user determined
Operating temperature range (packaged)
Thermal resistance
Thermal Characteristics
Junction temperature is a function of die size, on-chip power dissipation, package thermal resistance,
mounting site (board) temperature, ambient temperature, airflow, power dissipation of other components
on the board, and board thermal resistance.
Per SEMI G38-87 and JEDEC JESD51-2 with the single layer board horizontal. Single layer board is
designed per JEDEC JESD51-3.
64-pin LQFP (GB60)
48-pin QFN (GT60)
44-pin QFP (GT60)
42-pin SDIP (GT60)
int
DD
+ P
× V
I/O
DD
, Watts — chip internal power
I/O
SS
Rating
or V
<< P
K = P
I/O
DD
int
A
into account in power calculations, determine the difference between
and can be neglected. An approximate relationship between P
and multiply by the pin current for each I/O pin. Except in cases of
. Using this value of K, the values of P
Table A-2. Thermal Characteristics
D
MC9S08GB/GT Data Sheet, Rev. 2.3
P
T
× (T
D
J
= K ÷ (T
J
= T
A
) in °C can be obtained from:
+ 273°C) + θ
A
+ (P
J
D
+ 273°C)
× θ
Symbol
θ
JA
T
A
JA
1, 2
A
JA
.
)
× (P
D
)
2
–40 to 85
Value
118
65
82
57
D
and T
°C/W
J
Unit
SS
°C
can be obtained by
Freescale Semiconductor
or V
DD
Temp.
Code
C
will be very
D
Eqn. A-1
Eqn. A-2
Eqn. A-3
and T
J

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