參數(shù)資料
型號: MB91F367GA
廠商: Fujitsu Limited
元件分類: 微控制器
英文描述: 32-BIT MICROCONTROLLER
中文描述: 32位微控制器
文件頁數(shù): 36/62頁
文件大?。?/td> 713K
代理商: MB91F367GA
FME / EMDC / Br+JR - mb91f367g_f368g_ds.fm 36
10-Apr-01
9.3
Run Mode Current/Power consumption
The power dissipation during normal operation is determined by the total power dissipation of the internal logic
P
C
, the dissipation from analog modules P
A
and the power dissipation P
IO
of the I/O buffers. Among the I/O buff-
ers the dissipation caused by the stepper motor drivers P
SMC
should be taken into special consideration.
So the overall power consumption P
D
will be calculated as a sum of Pc + P
A
+ P
IO .
9.3.1 Logic Power Consumption
The following formula can be used to calculate the maximum core current consumption when the PLL is used
depending on the frequency settings for the internal clocks:
Icc
= 3.45[mA/MHz] * CLKB[MHz] + 2.52[mA/MHz] * CLKP[MHz] + 0.72[mA/MHz] * CLKT[MHz] + 35.5 mA.
If clock modulation is used the following value must be added to this result: 0.24[mA/MHz] * CLKB[MHz].
This results in the following values:
.
Note: Higher frequency settings cannot be allowed in the package currently used. For higher frequency
settings the maximum power consumption would exceed the maximum allowed value of 1.33W.
In addition to this power consumption of the MCU core logic the following contributions to the overall power con-
sumption have to be considered:
Clock frequencies [MHz]
Maximum
Core Current
Consumption
[mA]
Logic Power
Consumption
P
C
at 5.25 V
[mW]
Remarks
CLKB
CLKP
CLKT
32
16
16
205
1.08
24
24
24
202
1.06
24
12
12
163
0.86
16
16
16
146
0.77
2
2
2
40
0.21
no PLL, no clock modulation
0.125
0.125
0.125
30
0.16
no PLL, no clock modulation
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