參數(shù)資料
型號： ELANSC410-66AI
廠商： ADVANCED MICRO DEVICES INC
元件分類： 微控制器/微處理器
英文描述： Single-Chip, Low-Power, PC/AT-Compatible Microcontrollers
中文描述： 32-BIT, FLASH, 66 MHz, MICROCONTROLLER, PBGA292
封裝： PLASTIC, BGA-292
文件頁數(shù)： 130/132頁
文件大?。?/td> 2400K
代理商： ELANSC410-66AI
130
élanSC400 and élanSC410 Microcontrollers Data Sheet
THERMAL CHARACTERISTICS
The thermal specifications for the élanSC400 and
élanSC410 microcontrollers are given as a T
CASE
(the
case temperature) specification. The 33-MHz and
66-MHz devices are specified for operation when
T
CASE
is with the range of 0°C–+95°C. The 100-MHz
device is specified for operation when T
CASE
is within
the range of 0°C–+85°C. T
CASE
can be measured in
any environment to determine whether the microcon-
troller is within specified operating range. The case
temperature should be measured at the center of the
top surface opposite the solder balls.
The ambient temperature (T
A
) is guaranteed as long as
T
CASE
is not violated. The ambient temperature can be
calculated from
Ψ
J-T
and
θ
JA
from the following
equations:
T
J
= T
CASE
+ P
Ψ
J-T
T
A
= T
J
– P
θ
JA
T
CASE
= T
A
+ P (
θ
JA
–
Ψ
J-T
)
where:
T
J
is the junction temperature (°C).
T
A
is the ambient temperature (°C).
T
CASE
is the case temperature (°C).
Ψ
J-T
is the junction-to-case thermal resistance (°C/W).
θ
JA
is the junction-to-ambient thermal resistance
(°C/W).
P is the maximum power consumption (W).
The values for
θ
JA
and
Ψ
J-T
are given in Table 52 for
the BGA 292 package. These numbers are valid only
for packages with all 292 balls soldered to a board with
two power planes and two signal planes.
Table 53 shows the T
A
allowable (without exceeding
T
CASE
) at various airflows and operating frequencies.
P is calculated using the I
CC
at 3.3 V as tabulated in the
DC Characteristics section beginning on page 86.
Table 52.
Thermal Resistance
Ψ
J-T
and
θ
JA
(°C/W) for the 292-BGA Package)
Table 53.
Maximum T
A
at Various Airflows in °C
Airflow in Feet/Minute (m/s)
400
(2.03)
19.0
6.2
Thermal
Resistance
0
(0)
25.0
6.2
200
(1.01)
20.5
6.2
600
(3.04)
18.1
6.2
800
(4.06)
17.4
6.2
θ
JA
Ψ
J-T
Airflow in Feet/Minute (m/s)
400
(1.01)
(2.03)
86.4
77.5
59.0
0
200
600
(3.04)
87.8
80.4
63.4
800
(4.06)
88.3
81.3
64.6
Maximum T
A
at 33 MHz
at 66 MHz
at 100 MHz
(0)
83.7
72.0
50.8
87.3
79.3
61.7
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