How to calculate Max Power rating of MCU in mA

Status
Not open for further replies.
F

firmy

Junior Member level 3
Joined
Mar 15, 2005
Messages
27
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
1,495
Hi,
I am trying to calculate the maximum power rating of a MCU in mA

The electrical data manual says
Typical VDDi / VDDio = 1.8/3.3 V
Typical normal mode power (Total VDDi + VDDio) = 224 mW

Should I divide 224 with 1.8 or 3.3V to get power in mA?

(The MCU is samsungs S3C2410x)

Please help!
-Firmy
 

Hi,

What do you mean by "maximum current rating"?

If you mean the maximum you can sink/source from the MCU I/Os, then you should use a value specified in mA directly, because the power dissipation capacity of the package doesn't guaranty that each individual I/O can sink/source a given current.

If you want to know the power consumption of the MCU, and the figure you gave seems to be that value, then you can divide the power by the voltage to get the current consumption.

Regards,

CyBeRbLaK
 

Status
Not open for further replies.

Similar threads

Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…