The operating voltage for the configuration input pin is independent of the I/O banks power supply, VCCIO,
during configuration. Therefore, Cyclone V devices do not require configuration voltage constraints on
VCCIO.
VCCPD Pin
Use the VCCPD pin, a dedicated programming power supply, to power the I/O pre-drivers and JTAG I/O
pins (TCK, TMS, TDI, and TDO). The supported configuration voltages are 2.5, 3.0, and 3.3 V.
If VCCIO of the bank is set to 2.5 V or lower, VCCPD must be powered up at 2.5 V. If VCCIO is set greater than
2.5 V, VCCPD must be greater than VCCIO. For example, when VCCIO is set to 3.0 V, VCCPD must be set at
3.0 V or above. When VCCIO is set to 3.3 V, VCCPD must be set at 3.3 V.
Related Information
Provides more information about the ramp-up time specifications.
Provides more information about configuration pin connections.
Provides more information about configuration pins.
Provides more information about typical power supplies for each supported I/O standards in Cyclone V
devices.
Reset
POR delay is the time frame between the time when all the power supplies monitored by the POR circuitry
reach the recommended operating voltage and when nSTATUS is released high and the Cyclone V device is
ready to begin configuration.
Set the POR delay using the MSEL pins.
The user I/O pins are tied to an internal weak pull-up until the device is configured.
Related Information
Provides more information about the POR delay specification.
Configuration
For more information about the DATA[] pins for each configuration scheme, refer to the appropriate
configuration scheme.
Configuration Error Handling
To restart configuration automatically, turn on the Auto-restart configuration after error option in the
General page of the Device and Pin Options dialog box in the Quartus II software.
Altera Corporation
Configuration, Design Security, and Remote System Upgrades in Cyclone V Devices
7-5
Reset
CV-52007
2014.01.10