Chapter 9: Configuration, Design Security, and Remote System Upgrades in the Cyclone III Device Family
9–25
Configuration Features
Single-Device AP Configuration
The following groups of interface pins are supported in Micron P30 and P33 flash
memories:
■
■
■
Control pins
Address pins
Data pins
Following are the control signals from the supported parallel flash memories:
■
■
■
■
■
■
CLK
active-low reset (RST#
)
active-low chip enable (CE#)
active-low output enable (OE#
)
active-low address valid (ADV#
)
active-low write enable (WE#
)
The supported parallel flash memories output a control signal (WAIT) to Cyclone III
devices to indicate when synchronous data is ready on the data bus. Cyclone III
devices have a 24-bit address bus connecting to the address bus (A[24:1]) of the flash
memory. A 16-bit bidirectional data bus (DATA[15..0]) provides data transfer between
the Cyclone III device and the flash memory.
The following are the control signals from the Cyclone III device to flash memory:
■
■
■
■
■
■
DCLK
nRESET
FLASH_nCE
nOE
nAVD
nWE
August 2012 Altera Corporation
Cyclone III Device Handbook
Volume 1
ALTERA [ ALTERA CORPORATION ]
