Still doesn't make sense, they cost about the same. But more Flash/Ram/peripherals/GPIO etc... For me, there is no reason to me to choose the SAMD21 instead of SAMD10, except the BGA is not so DIY friendly.Microchip has many *different* devices.
I don't know much about picoacres, but I think I got what you are saying.It all comes down to measuring area in picoacres. More picoacres means more flash and RAM
Cost is the sum of all development costs and materials, plus delivery.I don't know much about picoacres, but I think I got what you are saying.
However, form a marketing point of view, it's silly not to charge more for the one with more Flash/Ram/GPIO/Peripheral? And also, from an application point of view, why would I choose the lower spec one instead of the higher spec one, considering they are the same price.
The only thing I can think of is BGA is harder to work with during development. And maybe need a 4 layer board instead of two layers?
Heck, Microchip still makes the PIC16F84A! It's a version of a chip they've been making for, what, two decades? It's more expensive than so many PIC's, all of which are better in every way. But people still want it, they may still be using old designs and don't want to change. If Microchip weren't selling any they would stop making it.Still doesn't make sense, they cost about the same. But more Flash/Ram/peripherals/GPIO etc... For me, there is no reason to me to choose the SAMD21 instead of SAMD10, except the BGA is not so DIY friendly.
I admit I didn't look into all the details, but SAMD21 series (the bigger chip) is in general better than SAMD10 series in term of peripherals....
There's lots more differences between chips than memory and Ram also, this comparison is likely over simplified.
OK, I think it makes sense now. The SAMD10 is properly selling to support order design, so they can sell at a higher price (because of lesser demand, so higher cost average chip)Heck, Microchip still makes the PIC16F84A! It's a version of a chip they've been making for, what, two decades? It's more expensive than so many PIC's, all of which are better in every way. But people still want it, they may still be using old designs and don't want to change. If Microchip weren't selling any they would stop making it.
Not if you want to drive sales. Picoacres is a unit of area on a silicon chip of 1E-12 acres or a square about 63+ microns on a side. My point was that more area with smaller feature sizes means more stuff on a standard size chip or more chips per standard size wafer. Talking about chip area in picoacres is like measuring the speed of light in furlongs per fortnight, as part of the FFF system of measurement. That's Furlong Firkin Fortnight.I don't know much about picoacres, but I think I got what you are saying.
However, form a marketing point of view, it's silly not to charge more for the one with more Flash/Ram/GPIO/Peripheral? And also, from an application point of view, why would I choose the lower spec one instead of the higher spec one, considering they are the same price.
The only thing I can think of is BGA is harder to work with during development. And maybe need a 4 layer board instead of two layers?
The former ATMEL errata explains why: http://ww1.microchip.com/downloads/en/DeviceDoc/SAM_D21_ DA1_Family_Silicon_Errata_DS80000760E.pdf
In you o[pinion, what is the major deal killer in that extensive list?The former ATMEL errata explains why: http://ww1.microchip.com/downloads/en/DeviceDoc/SAM_D21_ DA1_Family_Silicon_Errata_DS80000760E.pdf
For this device [A..D] Revisions have functionality bugs on things that are pretty basic and fixed with later revisions.In you o[pinion, what is the major deal killer in that extensive list?
Agreed. Probably competitive pressure to rush product into the marketplace only to have it turn around and byte you in the rear.For this device [A..D] Revisions have functionality bugs on things that are pretty basic and fixed with later revisions.
It's usually things that kill normal operation of the device like not waking up from sleep, memory corruption bugs or device clock bugs. Early Revs have all of these, so why use it for a new design if there is a better version.
It makes even more sense now after reading the errata.The former ATMEL errata explains why: http://ww1.microchip.com/downloads/en/DeviceDoc/SAM_D21_ DA1_Family_Silicon_Errata_DS80000760E.pdf
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