[chbot] Chocolate fish challenge: identify the chip
markaren1 at xtra.co.nz
Wed Oct 24 01:20:26 BST 2012
Unit also may have on-board LCD driver hw - that may narrow things down
Presumably an async channel to the radio, so UART, or USART
Square TQFP, rather than rectangular
868MHz RF indicates a non-US ISM band, but if it could be fitted with
a 915MHz radio for sale in the US, it might have an FCC number and
the FCC report may be public.
What device is U2 ?
At 11:57 a.m. 24/10/2012, you wrote:
>I'm trying to identify the MCU used in a product where the chip's
>markings have been helpfully ground off.
>I have this device in my possession and am able to perform
>non-destructive tests. See photo :
> * TQFP package with 100 pins
> * 3.3 V power rail
> * VCC on pins 96,60,14,97
> * GND on pins 62, 12
> * Decoupling caps between 60/62 and 14/12 - I'm thinking they
> are the power pins.
> * No external crystal used in the design.
> * Red dot indicates pin one, though may not have been painted by
>I offer a chocolate fish for any confirmed progress towards identification.
>Chchrobotics mailing list Chchrobotics at lists.linuxnut.co.nz
>Mail Archives: http://lists.ourshack.com/pipermail/chchrobotics/
>Web site: http://kiwibots.org
>Meetings 3rd Monday each month at Tait Radio Communications, 175
>Roydvale Ave, 6.30pm
>When replying, please edit your Subject line to reflect new content.
More information about the Chchrobotics