EP2C8Q208C8N Altera, EP2C8Q208C8N Datasheet - Page 87

• Manufacturer Part Number: EP2C8Q208C8N
• Description: IC CYCLONE II FPGA 8K 208-PQFP
• Manufacturer: Altera
• Series: Cyclone® IIr

Specifications of EP2C8Q208C8N

• Number Of Logic Elements/cells: 8256
• Number Of Labs/clbs: 516
• Total Ram Bits: 165888
• Number Of I /o: 138
• Voltage - Supply: 1.15 V ~ 1.25 V
• Mounting Type: Surface Mount
• Operating Temperature: 0°C ~ 85°C
• Package / Case: 208-MQFP, 208-PQFP
• Family Name: Cyclone® II
• Number Of Logic Blocks/elements: 8256
• # I/os (max): 138
• Frequency (max): 402.58MHz
• Process Technology: 90nm
• Operating Supply Voltage (typ): 1.2V
• Logic Cells: 8256
• Ram Bits: 165888
• Operating Supply Voltage (min): 1.15V
• Operating Supply Voltage (max): 1.25V
• Operating Temp Range: 0C to 85C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 208
• Package Type: PQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Number Of Gates: -
• Lead Free Status / Rohs Status: Compliant
• Other names: 544-1671

Power-On Reset
Circuitry
Altera Corporation
February 2007
Figure 4–2. Transistor Level Diagram of FPGA Device I/O Buffers
Notes to
(1)
(2)
Cyclone II devices contain POR circuitry to keep the device in a reset state
until the power supply voltage levels have stabilized during power-up.
The POR circuit monitors the V
I/O pins until the V
addition, the POR circuitry also monitors the V
banks that contains configuration pins (I/O banks 1 and 3 for EP2C5 and
EP2C8, I/O banks 2 and 6 for EP2C15A, EP2C20, EP2C35, EP2C50, and
EP2C70) and tri-states all user I/O pins until the V
recommended operating levels.
After the Cyclone II device enters user mode, the POR circuit continues to
monitor the V
user mode can be detected. If the V
point during user mode, the POR circuit resets the device. If the V
voltage sags during user mode, the POR circuit does not reset the device.
"Wake-up" Time for Cyclone II Devices
In some applications, it may be necessary for a device to wake up very
quickly in order to begin operation. The Cyclone II device family offers
the Fast-On feature to support fast wake-up time applications. Devices
that support the Fast-On feature are designated with an “A” in the
ordering code and have stricter power up requirements compared to non-
A devices.
This is the logic array signal or the larger of either the V
This is the larger of either the V
Figure
n+
CCINT
4–2:
Logic Array
p-well
Signal
voltage level so that a brown-out condition during
CC
reaches the recommended operating levels. In
n+
CCIO
V
CCINT
PAD
or V
CCINT
Cyclone II Device Handbook, Volume 1
voltage levels and tri-states all user
PAD
p+
voltage sags below the POR trip
Hot Socketing & Power-On Reset
signal.
(1)
CCIO
CC
CCIO
n-well
level of the two I/O
V
CCIO
p+
reaches the
or V
PAD
(2)
n+
signal.
p-substrate
CCIO
4–5