EP4CE30F29C7N Datasheet, PDF (168/488 Pages) Altera Corporation – Cyclone IV Device Handbook, Volume 1

8–4
Chapter 8: Configuration and Remote System Upgrades in Cyclone IV Devices
Configuration
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
Table 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)
EP4CE6
2,944,088
Cyclone IV E
EP4CE10
EP4CE15
EP4CE22
EP4CE30
2,944,088
4,086,848
5,748,552
9,534,304
EP4CE40
EP4CE55
EP4CE75
EP4CE115
9,534,304
14,889,560
19,965,752
28,571,696
Cyclone IV Device Handbook,
Volume 1
May 2013 Altera Corporation