6475 - What is the purpose of AGND pin?

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• 674 - POWR1014/A: Why should user avoid supply power to POWR1014's VCCPROG pin when VCCA and VCCD pins are powered on?

  Description: Power must NEVER be supplied to the VCCPROG pin when VCCD and VCCA are powered on. Operation under these conditions is undefined and may result in erroneous operation. User should supplied power to the VCCPROG pin on POWR1014 only when ...

• 2130 - Power Manager II: We found a sensitivity on the resetb pin of POWR1220AT8 - measuring voltages on that pin with a multimeter have triggered resets of the device. Is there any recommendation for reducing noise sensitivity on that pin?

  A 0.01 uF capacitor can be added to the RESETb pin to reduce the sensitivity to noise in certain applications.

• 730 - MachXO: Why do external pull up required for MachXO SLEEPN pin?

  The SLEEPN pin on the MachXO device is a control signal for the internal regulator. If the pin is pulled low it puts the device into a low power state. Although the SLEEPN pin has a weak internal pull-up, an external pull-up is recommended if the pin ...

• 7556 - How to determine UART pin direction of the on-chip FTDI for Lattice Boards?

  Lattice boards use the FTDI chip for onboard debugging and programming. One of the interfaces that can be used is the UART port. To easily identify FPGA port assignments for UART, users can refer below information. TXD_UART (BDBUS0) is an ...

• 2709 - Do Lattice's IBIS models include the RLC data for each pin?

  Lattice IBIS model do not include individual pin RLC. It has the worst case package RLC which will give the worst case simulation result.