Electronics > FPGA
XC7S15-1FTGB196C Unobtainium
EverydayMuffin:
--- Quote from: gnuarm on September 27, 2022, 09:24:15 pm ---
I've never been a fan, without any particular reason I can recall. I do know that the previous design didn't have room for larger parts (21 mm wide), so that excludes a lot of FPGAs without going to finer pitch BGAs.
I don't recall the details on the IGLOO2 parts, but there's often an issue with the equivalence of LUTs. Also, this part is a bit pricier, $15 @ 1k qty.
Maybe I need to take a fresh look at their parts.
Wow! They can ship 1,600 now, but... "Additional quantities estimated to ship by 16-Apr-2024" They know how to put the "time" in lead-time!
--- End quote ---
The TQG144 package is 20x20mm, worth considering that there is also a small space saving because these FPGAs are non-volatile and don't require an external flash chip.
A Microchip Logic Element is LUT4 so the M2GL010 which has 12,084 LUT4 (roughly equivalent to 8,000 LUT6).
Looks like Mouser have 2,227pcs in stock of the more expensive Industrial temperature grade part.
https://www.mouser.ie/ProductDetail/Microchip-Technology-Atmel/M2GL010-TQG144I?qs=pU29NIZ4ZwCkB%252BTNyuGkrw%3D%3D
gnuarm:
--- Quote from: EverydayMuffin on September 27, 2022, 09:44:50 pm ---
--- Quote from: gnuarm on September 27, 2022, 09:24:15 pm ---
I've never been a fan, without any particular reason I can recall. I do know that the previous design didn't have room for larger parts (21 mm wide), so that excludes a lot of FPGAs without going to finer pitch BGAs.
I don't recall the details on the IGLOO2 parts, but there's often an issue with the equivalence of LUTs. Also, this part is a bit pricier, $15 @ 1k qty.
Maybe I need to take a fresh look at their parts.
Wow! They can ship 1,600 now, but... "Additional quantities estimated to ship by 16-Apr-2024" They know how to put the "time" in lead-time!
--- End quote ---
The TQG144 package is 20x20mm, worth considering that there is also a small space saving because these FPGAs are non-volatile and don't require an external flash chip.
A Microchip Logic Element is LUT4 so the M2GL010 which has 12,084 LUT4 (roughly equivalent to 8,000 LUT6).
Looks like Mouser have 2,227pcs in stock of the more expensive Industrial temperature grade part.
https://www.mouser.ie/ProductDetail/Microchip-Technology-Atmel/M2GL010-TQG144I?qs=pU29NIZ4ZwCkB%252BTNyuGkrw%3D%3D
--- End quote ---
The bigger space saving is from the fact that QFP parts have no obstructions under them (usually) which frees up routing. BGAs require a via at most pins and QFN parts have a big heat slug on the bottom forcing vias to the outside. I've never seen a QFN that I thought would use less space on a PCB than the equivalent QFP. Not sure where BGAs fall as I've not used many.
The 100QFP on the current board has 8 element resistor packs on the other side of the board. They fit well.
They are there to assure a valid state of the I/Os while Config is held asserted and until the chip comes out of configuration. Often, it is hard to know what the chips are doing until they've started up. FPGA makers tend to spread this info around, rather than having a single section discussing it.
josuah:
There look like being some GW1N FPGAs on Mouser at the moment: https://www.mouser.fr/c/semiconductors/programmable-logic-ics/fpga-field-programmable-gate-array/?m=GOWIN%20Semiconductor&instock=y
Get them while they're hot!
Although highly priced!
I wonder how the Sipeed Tang Nano 9k managed to be sold for $5.90 https://www.seeedstudio.com/Sipeed-Tang-Nano-FPGA-board-powered-by-GW1N-1-FPGA-p-4304.html
And still today, the board is less expensive than the naked chip.
gnuarm:
--- Quote from: josuah on October 20, 2022, 09:09:43 pm ---There look like being some GW1N FPGAs on Mouser at the moment: https://www.mouser.fr/c/semiconductors/programmable-logic-ics/fpga-field-programmable-gate-array/?m=GOWIN%20Semiconductor&instock=y
--- End quote ---
I have a quote from a disti around $6 for the GW1N-9 parts in QFP100 and QFP144 packages, about $1 difference in price, qty 10,000. Delivery, 16 weeks.
My concern is that my customer won't want to use parts from mainland China because they sell a lot to the government. It's actually rather complicated.
gnuarm:
I was doing a quick scan of the FPGA landscape today just to check current status and found the XC7S15-1FTGB196C at Mouser was expecting a delivery in January! My heart was pounding, until I noticed that was January of 2024!
This is getting to be a bit like waiting for rain to come, or the next Tesla model to come out, or politicians to become trustworthy!
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version