Comments (5)
@umarcor Right, it might not be clear for everyone. I am putting a photo of how it comes together for reference.
from icebreaker.
As per @smunaut suggestion. I have added a pad that allows for an easy addition of an SPI RAM chip in SO8 package piggybacked onto the existing flash chip. We can't use ram and flash at the same time but we can use them in the same design by using ~LEDG signal as CS for the RAM. It is good enough for V1.0 ;)
from icebreaker.
@esden, I can't identify that pad in the schematics or the figures in the readme. Was it removed in the end?
from icebreaker.
Next to pin 37 of the fpga in https://github.com/icebreaker-fpga/icebreaker/blob/master/hardware/v1.0e/icebreaker-sch.pdf
from icebreaker.
@smunaut thanks. I misunderstood the meaning of "piggybacked" and I was looking for an unpopulated footprint at the bottom. All clear now.
from icebreaker.
Related Issues (20)
- Extend pads of RGB led foot print a bit to make hand solder easier
- Fix ice40 model name in schematic
- Fix ice40 RGB schematic symbol pinout HOT 1
- icebreaker-fpga shipped with Pmods need assembly hints HOT 1
- Consider adding suggested part numbers for suitable RGB leds to the doco HOT 2
- Need to document the user hacks. HOT 2
- Fix the schematic to adjust WS2812 ear resistor values
- Frequency accuracy of the 12 MHz oscillator (U7) HOT 2
- Seamless integration of ICEbreaker to Arduino IDE (using soft core) HOT 3
- "J20 Flash" header - add single-row PMOD option? HOT 2
- FPGA Pin numbers of SPI IO0/IO1 on the diagram are swapped HOT 2
- Too much load on the SRAM slave select line on the bitsy HOT 3
- SPI flash and FT2232H signal contention during the USB enumeration process HOT 1
- Wrong part number
- USB-C connector
- Reset button on icebreaker
- Icebreaker v1.0e -- diodes D1 and D11 are shorted HOT 5
- outdated RGBPanel link on https://www.crowdsupply.com/1bitsquared/icebreaker-fpga HOT 1
- Add COPI/CIPO legend to schematics HOT 1
- Power input and external pins?
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from icebreaker.