參數(shù)資料
型號: MCF52235
廠商: 飛思卡爾半導(dǎo)體(中國)有限公司
英文描述: ColdFire Microcontroller
中文描述: ColdFire微控制器
文件頁數(shù): 31/50頁
文件大?。?/td> 656K
代理商: MCF52235
Preliminary Electrical Characteristics
MCF52235 ColdFire Microcontroller, Rev. 3
Freescale Semiconductor
31
The average chip-junction temperature (T
J
) in
°
C can be obtained from
Eqn. 1
where
T
A
= ambient temperature,
°
C
Θ
JMA
= package thermal resistance, junction-to-ambient,
°
C/W
P
D
= P
INT
+ P
I/O
P
INT
= chip internal power, I
DD
×
V
DD
, watts
P
I/O
= power dissipation on input and output pins — user determined
For most applications, PI/O < P
INT
and can be ignored. An approximate relationship between P
D
and T
J
(if P
I/O
is neglected) is:
Eqn. 2
Solving equations 1 and 2 for K gives:
Eqn. 3
where K is a constant pertaining to the particular part. K can be determined from
Equation 3
by measuring P
D
(at equilibrium)
for a known T
A
. Using this value of K, the values of P
D
and T
J
can be obtained by solving
Equation 1
and
Equation 2
iteratively
for any value of T
A
.
2.2
ESD Protection
Table 21. ESD Protection Characteristics
1,
2
1
All ESD testing is in conformity with CDF-AEC-Q100 Stress Test Qualification for
Automotive Grade Integrated Circuits.
2
A device is defined as a failure if the device no longer meets the device specification
requirements after exposure to ESD pulses. Complete DC parametric and functional testing
is performed per applicable device specification at room temperature followed by hot
temperature, unless specified otherwise in the device specification.
Characteristics
Symbol
Value
Units
ESD target for Human Body Model
ESD target for Machine Model
HBM circuit description
HBM
MM
R
series
C
R
series
C
2000
200
1500
100
0
200
V
V
ohms
pF
ohms
pF
MM circuit description
Number of pulses per pin (HBM)
positive pulses
negative pulses
Number of pulses per pin (MM)
positive pulses
negative pulses
Interval of pulses
1
1
3
3
1
sec
T
J
T
A
P
D
Θ
JMA
×
(
)
+
=
P
D
K
T
J
273
°
C
+
(
)
÷
=
K
P
D
T
A
273
°
C
+
(
)
Θ
JMA
P
D
2
×
+
×
=
相關(guān)PDF資料
PDF描述
MCF5232CAB80 Integrated Microprocessor Hardware Specification
MCF5232 Integrated Microprocessor Hardware Specification
MCF5249 CodeWarrior Development Studio for ColdFire㈢ Architectures
MCF5251_07 ColdFire㈢ Microprocessor Data Sheet
MCF5251 ColdFire Processor
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