Fred 453 Posted July 9, 2015 Share Posted July 9, 2015 Interesting decapping of these and comparison. Whilst it's interesting that these seem to share the same die, I'm not sure that the price difference really justifies trying to reflash the cheaper one as the multi-protocol version. Plus, I wouldn't be surprised if the appropriate JTAG fuse (or whatever they use) has been blown. http://jelmertiete.com/2015/06/30/Difference-between-CC2630-and-CC2650/ via HackaDay http://hackaday.com/2015/07/09/decapping-the-cc2630-and-cc2650/ spirilis, pine and bluehash 3 Quote Link to post Share on other sites
Fred 453 Posted July 9, 2015 Author Share Posted July 9, 2015 What's up with the weird capitalization of the topic title? I'm sure I didn't type it that way and can't edit it. Quote Link to post Share on other sites
bluehash 1,581 Posted July 9, 2015 Share Posted July 9, 2015 What's up with the weird capitalization of the topic title? I'm sure I didn't type it that way and can't edit it. Forum software automatically forces it... to prevent SHOUTING! I'll fix it. Interesting writeup! Love the tiny antenna. Quote Link to post Share on other sites
jpnorair 340 Posted July 9, 2015 Share Posted July 9, 2015 The technical reference manual provides some insight. There is an 115KB ROM that contains the PHY control and partial MAC for 802.15.4 and BLE. I suppose on the ZigBee model it contains some additional ZigBee stuff. BLE and ZigBee aren't free. They bear a royalty that TI has to pay. On top of that, TI is charging a premium for the convenience. As nice as these chips are, they won't get designed-in to anything until the volume cost is around $3, or lower. Maybe it is already there. spirilis 1 Quote Link to post Share on other sites
spirilis 1,265 Posted July 9, 2015 Share Posted July 9, 2015 The technical reference manual provides some insight. There is an 115KB ROM that contains the PHY control and partial MAC for 802.15.4 and BLE. I suppose on the ZigBee model it contains some additional ZigBee stuff. BLE and ZigBee aren't free. They bear a royalty that TI has to pay. On top of that, TI is charging a premium for the convenience. As nice as these chips are, they won't get designed-in to anything until the volume cost is around $3, or lower. Maybe it is already there. Looking at CC2540 as an example, it looks like TI's price guidance is around the $3 mark more or less (at 1ku). jpnorair and bluehash 2 Quote Link to post Share on other sites
jpnorair 340 Posted July 12, 2015 Share Posted July 12, 2015 Looking at CC2540 as an example, it looks like TI's price guidance is around the $3 mark more or less (at 1ku). ZigBee is the real cost-add. I have some exposure to wireless technology licensing. Let's just say, $3 is a stratospheric royalty, most of which goes to Freescale/NXP. And people wonder why [almost] no-one uses ZigBee... Quote Link to post Share on other sites
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