EP2C20F256C6N Altera, EP2C20F256C6N Datasheet - Page 137

• Manufacturer Part Number: EP2C20F256C6N
• Description: IC CYCLONE II FPGA 20K 256-FBGA
• Manufacturer: Altera
• Series: Cyclone® IIr

Specifications of EP2C20F256C6N

• Number Of Logic Elements/cells: 18752
• Number Of Labs/clbs: 1172
• Total Ram Bits: 239616
• Number Of I /o: 152
• Voltage - Supply: 1.15 V ~ 1.25 V
• Mounting Type: Surface Mount
• Operating Temperature: 0°C ~ 85°C
• Package / Case: 256-FBGA
• For Use With: P0528 - BOARD DEV DE1 ALTERA544-1736 - CYCLONE II STARTER KIT EP2C20N
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Number Of Gates: -
• Other names: 544-1660

Altera Corporation
February 2008
LVTTL
2.5V
1.8V
1.5V
LVCMOS
SSTL_2_CLASS_I
SSTL_2_CLASS_II
SSTL_18_CLASS_I
SSTL_18_CLASS_II
1.5V_HSTL_CLASS_I
1.5V_HSTL_CLASS_II
1.8V_HSTL_CLASS_I
1.8V_HSTL_CLASS_II
PCI
PCI-X
DIFFERENTIAL_SSTL_2_
CLASS_I
DIFFERENTIAL_SSTL_2_
CLASS_II
Table 5–44. Maximum Input Clock Toggle Rate on Cyclone II Devices (Part 1 of 2)
I/O Standard
For example, the output toggle rate at 0 pF (default) load for SSTL-18
Class II 18mA I/O standard is 270 MHz on a
The derating factor is 29 ps/pF. For a 10pF load, the toggle rate is
calculated as:
Tables 5–44
devices.
= 1000 / (1000/toggle rate at default load + derating factor * load
value in pF/1000)
1000 / (1000/270 + 29 × 10/1000) = 250 (MHz)
Speed
Grade
450
450
450
300
450
500
500
500
500
500
500
500
500
500
500
–6
—
—
Column I/O Pins
Maximum Input Clock Toggle Rate on Cyclone II Devices (MHz)
through
Speed
Grade
405
405
405
270
405
500
500
500
500
500
500
500
500
500
500
–7
—
—
5–46
Speed
Grade
360
360
360
240
360
500
500
500
500
500
500
500
500
500
500
–8
—
—
show the I/O toggle rates for Cyclone II
DC Characteristics and Timing Specifications
Speed
Grade
500
500
500
500
450
450
450
300
450
500
500
500
500
350
350
500
500
–6
Row I/O Pins
Cyclone II Device Handbook, Volume 1
Speed
Grade
405
405
405
270
405
500
500
500
500
500
500
500
500
315
315
500
500
–7
Speed
Grade
–
500
500
500
500
360
360
360
240
360
500
500
500
500
280
280
500
500
–8
6 device column I/O pin.
Speed
Grade
420
450
450
300
420
500
500
500
500
500
500
500
500
350
350
500
500
–6
Dedicated Clock
Inputs
Speed
Grade
380
405
405
270
380
500
500
500
500
500
500
500
500
315
315
500
500
–7
Speed
Grade
340
360
360
240
340
500
500
500
500
500
500
500
500
280
280
500
500
5–47
–8