EP3C16F256I7N Altera, EP3C16F256I7N Datasheet - Page 252

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

Configuring Cyclone III Devices
Figure 10–3. Single Device AS Configuration
Notes to
(1)
(2)
(3)
(4)
(5)
(6)
10–16
Cyclone III Device Handbook, Volume 1
Connect the pull-up resistors to V
Cyclone III devices use the DATA[1] to ASDI path to control the configuration device.
The nCEO pin can be left unconnected or used as a user I/O pin when it does not feed another device’s nCE pin.
The MSEL pin settings vary for different configuration voltage standards and POR time. To connect MSEL[3..0],
refer to
These are dual-purpose I/O pins. FLASH_nCE pin functions as the nCSO pin in AS configuration scheme. DATA[1]
pin functions as the ASDO pin in AS configuration scheme.
Connect the series resistor at the near end of the serial configuration device.
Figure
Serial Configuration
Table 10–6 on page
10–3:
Device
DCLK
DATA
ASDI
nCS
10 kΩ
V
CCIO
1
1
Upon power-up, the Cyclone III devices go through a POR. The POR
delay is dependent on the MSEL pin settings which correspond to the
configuration scheme that you select. Depending on the configuration
scheme, either a fast POR time or a standard POR time is available. The
fast POR time is 3 ms < T
standard POR time is 50 ms < T
ramp rate. During POR, the device resets, holds nSTATUS and
CONF_DONE low, and tri-states all user I/O pins. Once the device
10–15. Connect the MSEL pins directly to V
25 Ω (6)
(1)
10 kΩ
CCIO
V
CCIO
When connecting a serial configuration device to the Cyclone III
device in single device AS configuration, you must connect a
25 Ω series resistor at the near end of the serial configuration
device for the DATA[0].
In single device AS configuration, the board trace length
between the serial configuration device to the Cyclone III device
should be within a maximum of 10 inches.
supply of the bank the pin resides in.
(2)
(1)
10 kΩ
V
GND
CCIO
(1)
nSTATUS
CONF_DONE
nCONFIG
nCE
DATA[0]
DCLK
FLASH_nCE (5)
DATA[1] (5)
POR
Cyclone III Device
< 9ms for fast configuration time. The
POR
< 200ms, which has a lower power
CCIO
MSEL[3..0]
or GND.
Altera Corporation-Preliminary
nCEO
N.C. (3)
(4)
March 2007