EP3C25U256I7 Altera, EP3C25U256I7 Datasheet - Page 51

• Manufacturer Part Number: EP3C25U256I7
• Description: IC CYCLONE III FPGA 25K 256 UBGA
• Manufacturer: Altera
• Series: Cyclone® IIIr

Specifications of EP3C25U256I7

• Number Of Logic Elements/cells: 24624
• Number Of Labs/clbs: 1539
• Total Ram Bits: 608256
• Number Of I /o: 156
• Voltage - Supply: 1.15 V ~ 1.25 V
• Mounting Type: Surface Mount
• Operating Temperature: -40°C ~ 100°C
• Package / Case: 256-UBGA
• Family Name: Cyclone III
• Number Of Logic Blocks/elements: 24624
• # I/os (max): 156
• Frequency (max): 437.5MHz
• Process Technology: 65nm
• Operating Supply Voltage (typ): 1.2V
• Logic Cells: 24624
• Ram Bits: 608256
• Operating Supply Voltage (min): 1.15V
• Operating Supply Voltage (max): 1.25V
• Operating Temp Range: -40C to 100C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 256
• Package Type: UFBGA
• For Use With: 544-2370 - KIT STARTER CYCLONE III EP3C25
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Number Of Gates: -
• Lead Free Status / Rohs Status: Not Compliant

Chapter 2: Cyclone III LS Device Data Sheet
Electrical Characteristics
© December 2009
Altera Corporation
Equation 2–1.
ΔR
ΔR
For ΔR
For ΔR
MF = MF
R
Notes to
(1) T
(2) T
(3) MF is multiplication factor.
(4) R
(5) R
(6) Subscript × refers to both
(7) ΔR
(8) ΔR
(9) dR/dT is the percentage change of resistance with temperature.
(10) dR/dV is the percentage change of resistance with voltage.
(11) V
(12) V
Example 2–1
25°C at 3.0 V to 85°C at 3.15 V.
Example 2–1.
ΔR
ΔR
Because ΔR
MF
Because ΔR
MF
MF = 0.963 × 1.157 = 1.114
R
Pin Capacitance
Table 2–9
Table 2–9. Cyclone III LS Devices Pin Capacitance (Part 1 of 2)
C
C
C
final
final
Symbol
IOTB
IOLR
LV DSLR
V
T
V
T
V
T
= 15.72/100 + 1 = 1.157
= (V
= (T
= R
= (3.15 – 3) × 1000 × –0.026 = –3.83
= (85 – 25) × 0.262 = 15.72
= 1 / (3.83/100 + 1) = 0.963
= 50 × 1.114 = 55.71 Ω
2
1
2
1
final
initial
is the final temperature.
is the initial temperature.
is final voltage.
is the initial voltage.
T
x
x
V
initial
Equation
is variation of resistance with temperature.
< 0; MF
> 0; MF
is variation of resistance with voltage.
2
is final resistance.
2
V
is initial resistance.
– T
– V
× MF
lists the pin capacitance for Cyclone III LS devices.
× MF –––––
V
T
Input capacitance on top/bottom I/O pins
Input capacitance on left/right I/O pins
Input capacitance on left/right I/O pins with true LVDS
output
1
is negative,
is positive,
1
) × dR/dT –––––
) × 1000 × dR/dV –––––
T
x
x
shows you how to calculate the change of 50 Ω I/O impedance from
–––––
2–1:
(Note
= 1/ (|ΔR
= ΔR
x
/100 + 1 –––––
1), (2), (3), (4), (5),
(11)
(12)
x
V
|/100 + 1) –––––
and
(8)
T
.
Parameter
(10)
(7)
(6)
(9)
Cyclone III Device Handbook, Volume 2
Typical –
QFP
7
7
8
Typical –
FBGA
6
5
7
Unit
pF
pF
pF
2–7