5602 - iCE40: What is the required VPP_2V5 voltage if NVCM programming is not used?

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• 445 - When I measure the Power Manager II HVOUT voltage it is low, why?

  Most likely the scope probe or volt-meter has too low an impedance and is pulling the voltage down. For example, if the High Voltage Output (HVOUT) is programmed to source 12 uA and the scope probe used to measure the output voltage is 100k to ...

• 2040 - Power Manger II: Can the POWR1220AT8 be used to monitor negative voltages?

  Description: Yes, the POWR1220AT8 device can be used to monitor negative voltage with the addition of some simple external circuitry. The inputs of the POWR1220AT8 device may accept signals from 0 to 6 V without the addition of external circuitry. ...

• 3828 - iCE40: Is VPP_FAST on ICE40LP CM81 device supported?

  No.VPP_FAST on ICE40LP CM81 device is not supported

• 128 - What are VCC(VDD)IB and VCC(VDD)OB supply connections used for on LatticeECP2M/3 and LatticeSC/M devices?

  Current-Mode Logic (CML) input and output buffers must be terminated for proper operation. CML uses true double termination. Rather than LVDS which is only terminated at the receiver. This means that any signal reflection back to the source reflects ...

• 1254 - How to define different VCCIO voltage in different IO bank for FPGA such as SC/ECP2/ECP2M/ECP3 devices? Why is it necessary?

  When running ispLEVER software tool, edit the project preference file *.lpf by following the example below to add these preference to set the BANK voltages to match the circuit board design and how the device is connected on board: BANK 0 VCCIO 3.3 ...