sc18is602b What is the reset requirement?

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sc18is602b What is the reset requirement?

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obroad
Contributor II

One demonstration circuit I've looked at shows the reset signal coming from the host microcontroller, which seems like a waste of an I/O pin.

Another appears to show an RC network, values unclear.

If I don't actually want the microcontroller to force reset the device then can I just tie reset high, is an RC delay enough, or would the device need a clean reset signal from a voltage monitor? With some other devices (Microchip I/O expanders) the reset appears optional and can be tied high.

I see that the reset pulse latches the state of the address pins. This would imply that reset timing is important.

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reyes
NXP TechSupport
NXP TechSupport

Hi,

There is an on-chip reset circuit after the power is on.
You don’t have to drive the reset pin unless you want to reset the device manually. 

Regards,

Jose

NXP Semiconductors

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