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EP4SGX360KF40C3N Datasheet, PDF (18/82 Pages) Altera Corporation – This chapter covers the electrical and switching characteristics for Stratix IV devices | |||
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Chapter 1: DC and Switching Characteristics for Stratix IV Devices
Electrical Characteristics
1â10
OCT calibration is automatically performed at power-up for OCT-enabled I/Os.
Table 1â13 lists OCT variation with temperature and voltage after power-up
calibration. Use Table 1â13 to determine the OCT variation after power-up calibration
and Equation 1â1 to determine the OCT variation without re-calibration.
Equation 1â1. OCT Variation Without Re-Calibration (1), (2), (3), (4), (5), (6)
ROCT
=
RSCALï¨ï¦1 +
ï¡
d----R--
dT
ï´
ïTï±
ï±
ï¡
-d---R---
dV
ï´
ïVï±ï¸ï¶
Notes to Equation 1â1:
(1) The ROCT value calculated from Equation 1â1 shows the range of OCT resistance with the variation of temperature
and VCCIO.
(2) RSCAL is the OCT resistance value at power-up.
(3) ïT is the variation of temperature with respect to the temperature at power-up.
(4) ïV is the variation of voltage with respect to the VCCIO at power-up.
(5) dR/dT is the percentage change of RSCAL with temperature.
(6) dR/dV is the percentage change of RSCAL with voltage.
Table 1â13 lists the OCT variation after the power-up calibration.
Table 1â13. OCT Variation after Power-Up Calibration (1)
Symbol
Description
dR/dV
OCT variation with voltage without
re-calibration
dR/dT
OCT variation with temperature
without re-calibration
VCCIO (V)
3.0
2.5
1.8
1.5
1.2
3.0
2.5
1.8
1.5
1.2
Note to Table 1â13:
(1) Valid for VCCIO range of ±5% and temperature range of 0° to 85°C.
Typical
0.0297
0.0344
0.0499
0.0744
0.1241
0.189
0.208
0.266
0.273
0.317
Pin Capacitance
Table 1â14 lists the Stratix IV device family pin capacitance.
Table 1â14. Pin Capacitance for Stratix IV Devices (Part 1 of 2)
Symbol
CIOTB
CIOLR
CCLKTB
CCLKLR
Description
Input capacitance on the top and bottom I/O pins
Input capacitance on the left and right I/O pins
Input capacitance on the top and bottom non-dedicated clock input pins
Input capacitance on the left and right non-dedicated clock input pins
Value
4
4
4
4
Unit
%/mV
%/°C
Unit
pF
pF
pF
pF
July 2012 Altera Corporation
Stratix IV Device Handbook
Volume 4: Device Datasheet and Addendum
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