EP3C16F256I7N Altera, EP3C16F256I7N Datasheet - Page 326

• Manufacturer Part Number: EP3C16F256I7N
• Description: Cyclone III
• Manufacturer: Altera

Configuring Cyclone III Devices
10–90
Cyclone III Device Handbook, Volume 1
nCE
nCEO
FLASH_nCE,
nCSO
Table 10–21. Dedicated Configuration Pins on the Cyclone III Device (Part 3 of 7)
Pin Name
N/A
N/A if option
is on. I/O if
option is off.
N/A in AS or
AP modes.
I/O in other
modes
User Mode
All
All
AS, AP
Configuration
Scheme
Input
Output
Output
Pin Type
Active-low chip enable. The
the Cyclone III device with a low signal to
allow configuration. The
low during configuration, initialization, and
user-mode. In single device configuration, it
should be tied low. In multi-device
configuration,
while its
next device in the chain.
The
successful JTAG programming of the device.
Output that drives low when Cyclone III device
configuration is complete. In single device
configuration, you can leave this pin floating or
use it as a user I/O pin after configuration. In
multi-device configuration, this pin feeds the
next device’s
device in the chain can be left floating or used
as a user I/O pin after configuration.
If you use the
nCE
to pull the
of its I/O bank to help the internal weak pull-up
resistor.
Use the Quartus II software to make this pin a
user I/O pin.
Output control signal from the Cyclone III
device to the serial configuration device in AS
mode that enables the configuration device.
FLASH_nCE
AS mode.
Output control signal from the Cyclone III
device to the parallel flash in AP mode that
enables the flash. Connects to the
both the Intel P30 and the Spansion S29WS-N
flash.
In AS or AP mode,
internal pull-up resistor that is always active.
nCE
pin, use an external 10-kΩ pull-up resistor
nCEO
pin must also be held low for
nCEO
Altera Corporation-Preliminary
nCE
nCE
nCEO
pin functions as the
pin is connected to
pin high to the V
Description
pin. The
of the first device is tied low
FLASH_nCE
pin to feed next device’s
nCE
nCEO
nCE
pin must be held
C C I O
pin activates
has an
of the last
nCSO
March 2007
CE#
nCE
voltage
pin on
of the
pin in