4657 - ECP2, ECP3, ECP5, MachXO, MachXO2, MachXO3: What is the permitted maximum undershoot/overshoot voltage of a particular device?

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• 2516 - MachXO: What is the meaning of "I/O Tristate Voltage Applied" and "Dedicated Input Voltage Applied" specified in the Absolute Maximum Ratings section of MachXO data sheet?

  Solution: There are two cases where an IO pad is driven by an external source. One is the case of a dedicated input pad, and the other is a bi-directional IO pad in which its output can be tri-stated. The "Dedicated Input Voltage Applied" and "I/O ...

• 2038 - Power Manager II:  How much undershoot on the SDA pin can a POWR1220AT8 device endure without causing damaging?

  The data sheet shows the Absolute Maximum Ratings for the POWR1220AT8 device. The I2C pins will have the same limits as the digital outputs OUT[5:20] but will also have a digital input buffer. The table shows Vtri, which is the voltage applied to ...

• 6431 - ECP5/ECP5-5G: What is the tolerable amount of overshoot/undershoot for ECP5 I/Os?

  ECP5 I/Os operates at VCCIOmax of 3.465V with an additional overshoot/undershoot tolerance of +/-180mV for junction temperature at 100degC and +/- 100mV for junction temperature of 125degC without reliability hazard.

• 739 - What is the default I/O state in a blank MachXO device?

  The silicon default of a bulk-erased MachXO device is as follows: Inputs are enabled, and referenced to Vccio. Buskeepers default to pullup. Outputs are tri-stated and default to 8ma at Vccio=1.8V and slow slew.

• 4773 - MachXO3: Does device support mixed voltage inputs?

  Yes, MachXO3L/MachXO3LF devices support mixed voltage for LVCMOS and LVTTL inputs.