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參數(shù)資料
| 型號(hào)： | AM188ER-25KCW |
| 廠商： | ADVANCED MICRO DEVICES INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | CA-BAYONET |
| 中文描述： | 16-BIT, 25 MHz, MICROCONTROLLER, PQFP100 |
| 封裝： | PLASTIC, QFP-100 |
| 文件頁數(shù)： | 62/112頁 |
| 文件大?。?/td> | 2878K |
| 代理商： | AM188ER-25KCW |
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62
Am186
TM
ER and Am188
TM
ER Microcontrollers Data Sheet
DRAFT
T
J
= T
C
+ (P
θ
JC
)
Table 12 shows T
J
values for the various versions of the
Am186ER and Am188ER microcontrollers. The
Speed/Pkg/Board column in Table 12 indicates the
clock speed in MHz, the type of package (P for PQFP
and T for TQFP), and the type of board (2 for 2-layer
and 4–6 for 4-layer to 6-layer).
Typical Ambient Temperatures
The typical ambient temperature specifications are
based on the following assumptions and calculations:
The commercial operating range of the Am186ER and
Am188ER microcontrollers is a case temperature T
C
of
0 to 100 degrees Centigrade. T
C
is measured at the top
center of the package. An increase in the ambient
temperature causes a proportional increase in T
C
.
The 50-MHz microcontroller is specified as 3.3 V, plus
or minus 10%. Therefore, 3.6 V is used for calculating
typical power consumption on the 50-MHz
microcontroller.
Typical power supply current (I
CC
) in normal usage is
estimated at 3.7 mA per MHz of microcontroller clock
rate.
Typical power consumption can be calculated using the
following formula:
(Watts) = (3.7 mA/MHz)
50 MHz
(3.6 V/1000)
Table 11 shows the variables that are used to calculate
the typical power consumption value for each version
of the Am186ER and Am188ER microcontrollers.
Table 11.
Typical Power Consumption Calculation
P = MHz
I
CC
Volts / 1000
Thermal resistance is a measure of the ability of a
package to remove heat from a semiconductor device.
A safe operating range for the device can be calculated
using the following formulas from Figure 17 and the
variables in Table 10.
By using the maximum case rating T
C
, the typical
power consumption value from Table 11, and
θ
JC
from
Table 10, the junction temperature T
J
can be calculated
Table 12.
Junction Temperature Calculation
T
J
= T
C
+ (P
θ
JC
)
By using T
J
from Table 12, the typical power
consumption value from Table 11, and a
θ
JA
value from
Table 10, the typical ambient temperature T
can be
calculated using the following formula from Figure 17.
= T
J
– (P
θ
JA
)
For example, T
for a 50-MHz PQFP design with a
2-layer board and 0 fpm airflow is calculated as follows:
T
A
= 104.6 – (0.662
45)
T
A
= 74.81
In this calculation, T
J
comes from Table 12, P comes
from Table 11, and
θ
JA
comes from Table 10. See Table
13.
T
A
for a 33-MHz TQFP design with a 4-layer to 6-layer
board and 200 fpm airflow is calculated as follows:
T
A
= 102.6 – (0.432
28)
T
A
= 90.5
See Table 16 for the result of this calculation.
Table 13 through Table 16 and Figure 18 through
Figure 21 show T
A
based on the preceding
assumptions and calculations for a range of
θ
JA
values
with airflow from 0 linear feet per minute to 600 linear
feet per minute.
Typical
Power (P)
in Watts
0.662
0.522
0.432
0.342
MHz
50
40
33
25
Typical I
CC
3.7
3.7
3.7
3.7
Volts
3.6
3.6
3.6
3.6
Speed/
Pkg/
Board
50/P2
50/T2
50/P4–6
50/T4–6
40/P2
40/T2
40/P4–6
33/P2
33/T2
33/P4–6
33/T4–6
25/P2
25/T2
25/P4–6
25/T4–6
T
J
T
C
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
P
θ
JC
7
10
5
6
7
10
5
7
10
5
6
7
10
5
6
0.662
0.662
0.662
0.662
0.522
0.522
0.522
0.432
0.432
0.432
0.432
0.342
0.342
0.342
0.342
104.6
106.6
103.3
104.0
103.7
105.2
102.6
103.0
104.3
102.2
102.6
102.4
103.4
101.7
102.1
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AM188ER-25KI/W | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:16-Bit Microprocessor |
| AM188ER-25KIW | 制造商:Advanced Micro Devices 功能描述:MCU 16-bit E86 CISC ROMLess 3.3V 100-Pin PQFP 制造商:AMD (Advanced Micro Devices) 功能描述:MCU 16-bit E86 CISC ROMLess 3.3V 100-Pin PQFP |
| AM188ER-25VC/W | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:16-Bit Microprocessor |
| AM188ER-25VCW | 制造商:AMD 制造商全稱:Advanced Micro Devices 功能描述:High-Performance, 80C186- and 80C188-Compatible, 16-Bit Embedded Microcontrollers with RAM |
| AM188ER-25VD\\W | 制造商:Advanced Micro Devices 功能描述: |
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