Mod Sony ICF-C318 Clock Radio to Display 24hr Time

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hman414
Posts: 1
Joined: Sun May 23, 2010 6:19 am
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Mod Sony ICF-C318 Clock Radio to Display 24hr Time

Post by hman414 » Sun May 23, 2010 6:43 am

Hello all,

I am wanting to modify a Sony ICF-C318 clock radio so it displays 24 hour (00:00-23:59) time. It currently displays 12 hour time.

I have done some research and it looks like European versions of the same model number DO display time in a 24 hour format.

The IC controlling the clock functions is a 36 pin quad flat package chip.

The chip does not have any manufacture logo.

The chip has the following characters on it:

872B06A
58J1
7NX0J


I have not been able to find any info about this IC online.

I have found datasheets on other alarm clock IC's from other manufactures and they all have built in 12 hr/24 hr capibility. Just need to find the data sheet on this 36 pin QFP IC.

Any info would be great!

Thanks !

Hman414

ltx71cm
Posts: 59
Joined: Sun May 23, 2010 4:29 am
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Re: Mod Sony ICF-C318 Clock Radio to Display 24hr Time

Post by ltx71cm » Sun May 23, 2010 9:23 am

I couldn't turn up a datahseet either (probably an in-house number) but I did find this http://forum.allaboutcircuits.com/showt ... hp?p=86783

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