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General Discussions => The Lab => Topic started by: Steve Jones on May 14, 2010, 11:54:38 PM

Title: CPU reset generator IC
Post by: Steve Jones on May 14, 2010, 11:54:38 PM
Someone told me that there is a 3 pin IC available that generates a soft start CPU reset voltage for CPU's, I was wondering if anyone has come across these and knows a part number? I have an Oberheim OB8 with a strange factory mod that I want to ditch in favour of a better reset circuit.

Steve
Title: Re: CPU reset generator IC
Post by: Andy Peters on May 15, 2010, 01:33:29 AM
Someone told me that there is a 3 pin IC available that generates a soft start CPU reset voltage for CPU's, I was wondering if anyone has come across these and knows a part number? I have an Oberheim OB8 with a strange factory mod that I want to ditch in favour of a better reset circuit.

Microchip MCP809 among about a hundred variations-on-the-theme.

But these aren't "soft start" reset devices. They monitor the power rail, and keep their outputs asserted for well after the power-supply has stabilized.

-a
Title: Re: CPU reset generator IC
Post by: jdbakker on May 15, 2010, 05:53:15 AM
Were you thinking of this thread (http://www.groupdiy.com/index.php?topic=28465.0)?

JDB.
Title: Re: CPU reset generator IC
Post by: Steve Jones on May 16, 2010, 06:35:15 AM
Someone told me that there is a 3 pin IC available that generates a soft start CPU reset voltage for CPU's, I was wondering if anyone has come across these and knows a part number? I have an Oberheim OB8 with a strange factory mod that I want to ditch in favour of a better reset circuit.

Microchip MCP809 among about a hundred variations-on-the-theme.

But these aren't "soft start" reset devices. They monitor the power rail, and keep their outputs asserted for well after the power-supply has stabilized.

-a

Perfect. just what I am looking for. thanks!
Title: Re: CPU reset generator IC
Post by: Steve Jones on May 16, 2010, 06:37:20 AM
Were you thinking of this thread (http://www.groupdiy.com/index.php?topic=28465.0)?

JDB.

No, that was a fun thread way back, but this time it is an OB8 with a weird factory revision, so I want to bypass it all together with a new chip.