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Is it necessary to maintain 5V power supply voltage in Stand-by mode ?

Latest Updated:03/18/2009

Question:

Is it necessary to maintain 5V power supply voltage in Stand-by mode ?

Answer:

In software stand-by, the 5V supply is necessary because the CPU registers are maintained. However its OK to reduce the power supply voltage in hardware stand-by because only the RAM contents are preserved. The minimum voltage to hold the RAM contents is 2V.
Suitable Products
SH7144 Series
SH7047 Series
SH7046 Series
SH7040 Series