Timeline for Microcontroller with >30KB RAM and high performance in a TQFP-44 or similar package
Current License: CC BY-SA 2.5
12 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Oct 30, 2010 at 9:43 | answer | added | mikeselectricstuff | timeline score: 1 | |
| Oct 29, 2010 at 21:47 | vote | accept | Thomas O | ||
| Oct 29, 2010 at 18:18 | vote | accept | Thomas O | ||
| Oct 29, 2010 at 18:18 | |||||
| Oct 29, 2010 at 7:47 | comment | added | starblue | Farnell has a nice parametric search: export.farnell.com/microcontrollers-mcu | |
| Oct 29, 2010 at 5:08 | comment | added | Connor Wolf | Not being parallelizeable is not necessarily an objection to the propeller. You could pipeline the operations, with each COG doing a small part of the computation, and passing the results off to the next COG through the hub ram. | |
| Oct 28, 2010 at 23:44 | comment | added | Thomas O | I'm dealing with an OSD output stage which can't be made parallel. (Background things like line drawing could be "queued" and six of the eight cogs assigned to rendering them.) However, the chip DOES have an onboard TV scan line output stage which could be made to work with relative ease, I would need to disable the colour modulation though because without proper sync it will go all wrong. | |
| Oct 28, 2010 at 23:42 | comment | added | tcrosley | >Current candidates are the Parallax Propeller, but that only has 20 MIPS instruction cycle -- but thats 20 MIPS for each of eight cogs, for a total of 160 MIPS for the entire chip. Of course you won't get high performance using their interpreted Spin language -- you'll need to go to assembly or C. Note: you are probably already aware of this, but the Propeller can output NTSC/PAL/VGA with just a few resistors as an interfacem which might be useful for an OSD project. | |
| Oct 28, 2010 at 23:33 | answer | added | tcrosley | timeline score: 4 | |
| Oct 28, 2010 at 23:33 | answer | added | Kevin Vermeer | timeline score: 1 | |
| Oct 28, 2010 at 23:32 | answer | added | semaj | timeline score: 3 | |
| Oct 28, 2010 at 23:29 | answer | added | Toby Jaffey | timeline score: 2 | |
| Oct 28, 2010 at 23:08 | history | asked | Thomas O | CC BY-SA 2.5 |