EP4SGX180DF29I3N Datasheet, PDF (18/82 Pages) Altera Corporation – Stratix IV Device Handbook Volume 4: Device Datasheet and Addendum

Chapter 1: DC and Switching Characteristics for Stratix IV Devices
Electrical Characteristics
1–10
OCT calibration is automatically performed at power-up for OCT-enabled I/Os.
Table 1–13 lists OCT variation with temperature and voltage after power-up
calibration. Use Table 1–13 to determine the OCT variation after power-up calibration
and Equation 1–1 to determine the OCT variation without re-calibration.
Equation 1–1. OCT Variation Without Re-Calibration ⁽¹⁾, ⁽²⁾, ⁽³⁾, ⁽⁴⁾, ⁽⁵⁾, ⁽⁶⁾
R_OCT
=
R_{SCAL}1 +

d_----R_--
dT

T


-^d---^R---
dV

V
Notes to Equation 1–1:
(1) The R_OCT value calculated from Equation 1–1 shows the range of OCT resistance with the variation of temperature
and V_CCIO.
(2) R_SCAL is the OCT resistance value at power-up.
(3) T is the variation of temperature with respect to the temperature at power-up.
(4) V is the variation of voltage with respect to the V_CCIO at power-up.
(5) dR/dT is the percentage change of R_SCAL with temperature.
(6) dR/dV is the percentage change of R_SCAL with voltage.
Table 1–13 lists the OCT variation after the power-up calibration.
Table 1–13. 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
V_CCIO (V)
3.0
2.5
1.8
1.5
1.2
3.0
2.5
1.8
1.5
1.2
Note to Table 1–13:
(1) Valid for V_CCIO 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 1–14 lists the Stratix IV device family pin capacitance.
Table 1–14. Pin Capacitance for Stratix IV Devices (Part 1 of 2)
Symbol
C_IOTB
C_IOLR
C_CLKTB
C_CLKLR
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
January 2014 Altera Corporation
Stratix IV Device Handbook
Volume 4: Device Datasheet and Addendum