EP3C16F256I7 Altera, EP3C16F256I7 Datasheet - Page 338

• Manufacturer Part Number: EP3C16F256I7
• Description: Cyclone III
• Manufacturer: Altera

Power-On Reset Circuitry
Figure 11–3. Cyclone III Wake-Up Time
11–6
Cyclone III Device Handbook, Volume 1
f
For more information about the MSEL[3..0] pin settings, refer to the
Configuring Cyclone III Devices chapter in volume 1 of the Cyclone III
Device Handbook.
For Cyclone III devices, wake-up time consists of power-up, POR,
configuration, and initialization. The device must properly go through all
four stages to configure correctly and begin operation. You can calculate
wake-up time using the following equation:
Wake-Up Time = V
Initialization Time
Figure 11–3
The V
your system and the device MSEL[3..0] pin settings.
Configuration time depends on the configuration scheme you chose and
the configuration file size. You can calculate configuration time by
multiplying the number of bits in the configuration file with the period of
the configuration clock. For fast configuration times, you should either
use a fast passive parallel (FPP) configuration scheme with maximum
DCLK frequency of 100 MHz or an active parallel (AP) configuration
scheme with maximum DCLK frequency of 40 MHz. In addition, you can
CC
ramp time and POR time depend on the power supply used in
illustrates the components of wake-up time.
CC
Ramp Time + POR Time + Configuration Time +
Altera Corporation-Preliminary
March 2007