Article ID: 000083451 Content Type: Troubleshooting Last Reviewed: 01/01/2015

Can I disable the internal weak pull-up resistors on all dual purpose and user I/O pins before and during device configuration in Cyclone-series devices?

Environment

BUILT IN - ARTICLE INTRO SECOND COMPONENT
Description

No, you cannot disable the internal weak pull-up resistors on dual purpose and user I/O pins before and during configuration in Cyclone®-series devices. Cyclone-series devices do not have the nIO_PULLUP pin which can enable or disable the weak pull-up resistor on all dual purpose and user I/O pins before and during configuration. 

For more details on nIO_PULLUP usage, refer to the respective Pin Connection Guidelines for each device family.     

Related Products

This article applies to 12 products

Cyclone® III FPGAs
Cyclone® II FPGA
Cyclone® FPGAs
Cyclone® IV E FPGA
Cyclone® V SX SoC FPGA
Cyclone® V E FPGA
Cyclone® V ST SoC FPGA
Cyclone® V GT FPGA
Cyclone® IV GX FPGA
Cyclone® V GX FPGA
Cyclone® V SE SoC FPGA
Cyclone® III LS FPGA

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