Specifications

The operating voltage for the configuration input pin is independent of the I/O banks power supply, V
CCIO
,
during configuration. Therefore, Cyclone V devices do not require configuration voltage constraints on
V
CCIO
.
V
CCPD
Pin
Use the V
CCPD
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 V
CCIO
of the bank is set to 2.5 V or lower, V
CCPD
must be powered up at 2.5 V. If V
CCIO
is set greater than
2.5 V, V
CCPD
must be greater than V
CCIO
. For example, when V
CCIO
is set to 3.0 V, V
CCPD
must be set at
3.0 V or above. When V
CCIO
is set to 3.3 V, V
CCPD
must be set at 3.3 V.
Related Information
• Cyclone V Device Datasheet
Provides more information about the ramp-up time specifications.
• Cyclone V Device Family Pin Connection Guidelines
Provides more information about configuration pin connections.
• Device Configuration Pins on page 7-6
Provides more information about configuration pins.
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
• MSEL Pin Settings on page 7-2
• Cyclone V Device Datasheet
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.
If you do not turn on this option, you can monitor the nSTATUS pin to detect errors. To restart configuration,
pull the nCONFIG pin low for at least the duration of t
CFG
.
Altera Corporation
Configuration, Design Security, and Remote System Upgrades in Cyclone V Devices
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7-5
Reset
CV-52007
2013.06.11