Chapter 2: Device Datasheet for Arria V Devices
2–9
Electrical Characteristics
OCT calibration is automatically performed at power up for OCT-enabled I/Os.
Table 2–10 lists OCT variation with temperature and voltage after power-up
calibration. Use Table 2–10 to determine the OCT variation after power-up calibration
and Equation 2–1 to determine the OCT variation without recalibration.
Equation 2–1. OCT Variation Without Recalibration—Preliminary (1), (2), (3), (4), (5), (6)
dR
dT
dR
dV
------
-------
V
ROCT = R
1 +
T
SCAL
Notes to Equation 2–1:
(1) The ROCT value calculated from Equation 2–1 shows the range of OCT resistance with the variation of temperature
and VCCIO
.
(2) RSCAL 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 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 2–10 lists the OCT variation after the power-up calibration.
(1)
Table 2–10. OCT Variation after Power-Up Calibration for Arria V Devices—Preliminary
Symbol
Description
VCCIO (V)
3.0
Value
0.0297
0.0344
0.0499
0.0744
0.1241
0.189
Unit
2.5
OCT variation of voltage without
recalibration
dR/dV
1.8
%/mV
%/°C
1.5
1.2
3.0
2.5
0.208
OCT variation of temperature without
recalibration
dR/dT
1.8
0.266
1.5
0.273
1.2
0.317
Note to Table 2–10:
(1) Valid for a VCCIO range of 5% and temperature range of 0° to 85°C.
Pin Capacitance
Table 2–11 lists the Arria V pin capacitance.
Table 2–11. Pin Capacitance for Arria V Devices
Symbol
CIOTB
Description
Value
Unit
pF
Input capacitance on top/bottom I/O pins
Input capacitance on left/right I/O pins
5.5
5.5
5.5
CIOLR
pF
COUTFB
Input capacitance on dual-purpose clock output/feedback pins
pF
February 2012 Altera Corporation
Arria V Device Handbook
Volume 1: Device Overview and Datasheet
ALTERA [ ALTERA CORPORATION ]
