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参数资料
| 型号： | MC92460ZU |
| 厂商： | MOTOROLA INC |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 40 CHANNEL(S), 66.7M bps, SERIAL COMM CONTROLLER, PBGA480 |
| 封装： | 37 X 37 MM, 1.70 MM HEIGHT, 1.27 MM PITCH, TBGA-480 |
| 文件页数： | 12/15页 |
| 文件大小： | 353K |
| 代理商： | MC92460ZU |
6
MC92460 HDLC Controller Hardware Specications
MOTOROLA
Electrical and Thermal Characteristics
1.2.2
Thermal Characteristics
Table 4 describes thermal characteristics.
LFM = Linear Feet per Minute
1.2.3
Power Considerations
The average chip-junction temperature, Tj, can be obtained from the following:
where
= package thermal resistance, junction to ambient, oC/W
= ambient temperature, oC
Power equations are the following:
= chip total power dissipation, W
= chip core power, W
= user-determined power dissipation on input/output pins, W
1.2.4
Power Dissipation
Table 5 describes maximum chip core power dissipation.
Table 4. Maximum Temperatures and Voltages
Characteristics
Symbol
Thermal
Resistance
Value
Unit
Air Flow
Thermal resistance for 480 TBGA
10.48
oC/W
0 LFM
8.61
oC/W
100 LFM
7.78
oC/W
200 LFM
6.89
oC/W
400 LFM
5.52
oC/W
800 LFM
Table 5. Maximum Core Power Dissipation (PVDD)
VDD(V)
SYSCLK
Frequency (MHz)
IVDD (mA)
PVDD (mW)
PVDDH(mW)
1.95
66.7
650
980
920
θ
JA
T
J
T
A
P
D
θ
JA
()
+
=
θ
JA
T
A
P
D
P
VDD
P
VDDH
+
=
P
VDD
I
VDD
×
=
P
VDDH
I
VDDH
VDD
×
H
=
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