Altera Cyclone IV - Configuration File Size; Power-On Reset (POR) Circuit

8–4 Chapter 8: Configuration and Remote System Upgrades in Cyclone IV Devices
Configuration
Cyclone IV Device Handbook, May 2013 Altera Corporation
Volume 1
Power-On Reset (POR) Circuit
The POR circuit keeps the device in reset state until the power supply voltage levels
have stabilized during device power up. After device power up, the device does not
release
nSTATUS until V
CCINT
, V
CCA
, and V
CCIO
(for I/O banks in which the
configuration and JTAG pins reside) are above the POR trip point of the device.
V
CCINT
and V
CCA
are monitored for brown-out conditions after device power up.
1 V
CCA
is the analog power to the phase-locked loop (PLL).
In some applications, it is necessary for a device to wake up very quickly to begin
operation. Cyclone IV devices offer the fast POR time option to support fast wake-up
time applications. The fast POR time option has stricter power-up requirements when
compared with the standard POR time option. You can select either the fast option or
the standard POR option with the
MSEL pin settings.
1 If your system exceeds the fast or standard POR time, you must hold
nCONFIG low
until all the power supplies are stable.
f For more information about the POR specifications, refer to the Cyclone IV Device
Datasheet.
f For more information about the wake-up time and POR circuit, refer to the Power
Requirements for Cyclone IV Devices chapter.
Configuration File Size
Tab le 8 –2 lists the approximate uncompressed configuration file sizes for Cyclone IV
devices. To calculate the amount of storage space required for multiple device
configurations, add the file size of each device together.
Table 8–2. Uncompressed Raw Binary File (.rbf) Sizes for Cyclone IV Devices (Part 1 of 2)
Device Data Size (bits)
Cyclone IV E
EP4CE6 2,944,088
EP4CE10 2,944,088
EP4CE15 4,086,848
EP4CE22 5,748,552
EP4CE30 9,534,304
EP4CE40 9,534,304
EP4CE55 14,889,560
EP4CE75 19,965,752
EP4CE115 28,571,696