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Will weak keeper functions even I/O and data bus in high impedance?

Latest Updated:03/23/2009

Question:

Although the I/O port and the data bus will be high-impedance when a power-on reset, at this time, is the weak keeper circuit functioning?

Answer:

The weak keeper circuit is functioning when a power-on reset.

Although the state of pins is fixed to "1" or "0" by the weal keeper circuit, it is only because the level is maintained; it follows to the drive from an external device.

Suitable Products
SH7206
SH7641
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