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Cyclone III Device Handbook
Volume 2
July 2012
Subscribe
1–2
Chapter 1: Cyclone III Device Datasheet
Electrical Characteristics
1
Conditions beyond those listed in
Table 1–1
cause permanent damage to the device.
Additionally, device operation at the absolute maximum ratings for extended periods
of time has adverse effects on the device.
Table 1–1. Cyclone III Devices Absolute Maximum Ratings
Symbol
V
CCINT
V
CCIO
V
CCA
V
CCD_PLL
V
I
I
OUT
V
ESDHBM
V
ESDCDM
T
STG
T
J
Parameter
Supply voltage for internal logic
Supply voltage for output buffers
Supply voltage (analog) for phase-locked loop
(PLL) regulator
Supply voltage (digital) for PLL
DC input voltage
DC output current, per pin
Electrostatic discharge voltage using the human
body model
Electrostatic discharge voltage using the
charged device model
Storage temperature
Operating junction temperature
(1)
Min
–0.5
–0.5
–0.5
–0.5
–0.5
–25
—
—
–65
–40
Max
1.8
3.9
3.75
1.8
3.95
40
±2000
±500
150
125
Unit
V
V
V
V
V
mA
V
V
°C
°C
Note to
Table 1–1:
(1) Supply voltage specifications apply to voltage readings taken at the device pins with respect to ground, not at the
power supply.
Maximum Allowed Overshoot or Undershoot Voltage
During transitions, input signals may overshoot to the voltage listed in
Table 1–2
and
undershoot to –2.0 V for a magnitude of currents less than 100 mA and for periods
shorter than 20 ns.
Table 1–2
lists the maximum allowed input overshoot voltage and
the duration of the overshoot voltage as a percentage over the lifetime of the device.
The maximum allowed overshoot duration is specified as percentage of high-time
over the lifetime of the device.
Cyclone III Device Handbook
Volume 2
July 2012 Altera Corporation
Chapter 1: Cyclone III Device Datasheet
Electrical Characteristics
1–3
1
A DC signal is equivalent to 100% duty cycle. For example, a signal that overshoots to
4.2 V can only be at 4.2 V for 10.74% over the lifetime of the device; for device lifetime
of 10 years, this amounts to 10.74/10ths of a year.
Table 1–2. Cyclone III Devices Maximum Allowed Overshoot During Transitions over a 10-Year
Time Frame
(1)
Symbol
Parameter
Condition
V
I
= 3.95 V
V
I
= 4.0 V
V
I
= 4.05 V
V
I
= 4.10 V
V
I
= 4.15 V
V
I
= 4.20 V
V
i
AC Input
Voltage
V
I
= 4.25 V
V
I
= 4.30 V
V
I
= 4.35 V
V
I
= 4.40 V
V
I
= 4.45 V
V
I
= 4.50 V
V
I
= 4.60 V
V
I
= 4.70 V
Note to
Table 1–2:
(1)
Figure 1–1
shows the methodology to determine the overshoot duration. In the example in
Figure 1–1,
overshoot
voltage is shown in red and is present on the input pin of the Cyclone III device at over 4.1 V but below 4.2 V. From
Table 1–1,
for an overshoot of 4.1 V, the percentage of high time for the overshoot can be as high as 31.97% over
a 10-year period. Percentage of high time is calculated as ([delta T]/T) × 100. This 10-year period assumes the
device is always turned on with 100% I/O toggle rate and 50% duty cycle signal. For lower I/O toggle rates and
situations in which the device is in an idle state, lifetimes are increased.
Overshoot Duration as % of High Time
100
95.67
55.24
31.97
18.52
10.74
6.23
3.62
2.1
1.22
0.71
0.41
0.14
0.047
Unit
%
%
%
%
%
%
%
%
%
%
%
%
%
%
Figure 1–1
shows the methodology to determine the overshoot duration.
Figure 1–1. Cyclone III Devices Overshoot Duration
4.2 V
4.1 V
3.3 V
ΔT
T
July 2012
Altera Corporation
Cyclone III Device Handbook
Volume 2
1–4
Chapter 1: Cyclone III Device Datasheet
Electrical Characteristics
Recommended Operating Conditions
This section lists the functional operation limits for AC and DC parameters for
Cyclone III devices. The steady-state voltage and current values expected from
Cyclone III devices are provided in
Table 1–3.
All supplies must be strictly monotonic
without plateaus.
Table 1–3. Cyclone III Devices Recommended Operating Conditions
Symbol
V
CCINT
(3)
(1), (2)
Parameter
Supply voltage for internal logic
Supply voltage for output buffers, 3.3-V
operation
Supply voltage for output buffers, 3.0-V
operation
Supply voltage for output buffers, 2.5-V
operation
Supply voltage for output buffers, 1.8-V
operation
Supply voltage for output buffers, 1.5-V
operation
Supply voltage for output buffers, 1.2-V
operation
Conditions
—
—
—
—
—
—
—
—
—
—
—
For commercial use
For industrial use
For extended temperature
For automotive use
Standard power-on reset
(POR)
(5)
Fast POR
(6)
Min
1.15
3.135
2.85
2.375
1.71
1.425
1.14
2.375
1.15
–0.5
0
0
–40
–40
–40
50 µs
50 µs
—
Typ
1.2
3.3
3
2.5
1.8
1.5
1.2
2.5
1.2
—
—
—
—
—
—
—
—
—
Max
1.25
3.465
3.15
2.625
1.89
1.575
1.26
2.625
1.25
3.6
V
CCIO
85
100
125
125
50 ms
3 ms
10
Unit
V
V
V
V
V
V
V
V
V
V
V
°C
°C
°C
°C
—
—
mA
V
CCIO
(3), (4)
V
CCA
(3)
(3)
Supply (analog) voltage for PLL
regulator
Supply (digital) voltage for PLL
Input voltage
Output voltage
V
CCD_PLL
V
I
V
O
T
J
Operating junction temperature
t
RAMP
Power supply ramp time
Magnitude of DC current across
PCI-clamp diode when enabled
I
Diode
—
Notes to
Table 1–3:
(1) V
CCIO
for all I/O banks must be powered up during device operation. All V
CCA
pins must be powered to 2.5 V (even when PLLs are not used), and
must be powered up and powered down at the same time.
(2) V
CCD_PLL
must always be connected to V
CCINT
through a decoupling capacitor and ferrite bead.
(3) The V
CC
must rise monotonically.
(4) All input buffers are powered by the V
CCIO
supply.
(5) POR time for Standard POR ranges between 50–200 ms. Each individual power supply should reach the recommended operating range within
50 ms.
(6) POR time for Fast POR ranges between 3–9 ms. Each individual power supply should reach the recommended operating range within 3 ms.
Cyclone III Device Handbook
Volume 2
July 2012 Altera Corporation
Chapter 1: Cyclone III Device Datasheet
Electrical Characteristics
1–5
DC Characteristics
This section lists the I/O leakage current, pin capacitance, on-chip termination (OCT)
tolerance, and bus hold specifications for Cyclone III devices.
Supply Current
Standby current is the current the device draws after the device is configured with no
inputs or outputs toggling and no activity in the device. Use the Excel-based early
power estimator (EPE) to get the supply current estimates for your design because
these currents vary largely with the resources used.
Table 1–4
lists I/O pin leakage
current for Cyclone III devices.
f
For more information about power estimation tools, refer to the
PowerPlay Early Power
Estimator User Guide
and the
PowerPlay Power Analysis
chapter in the
Quartus II
Handbook.
Table 1–4. Cyclone III Devices I/O Pin Leakage Current
(1),
Symbol
I
I
I
OZ
Parameter
Input pin leakage current
Tristated I/O pin leakage
current
Conditions
V
I
= 0 V to V
CCIOMAX
V
O
= 0 V to V
CCIOMAX
(2)
Min
–10
–10
Typ
—
—
Max
10
10
Unit
A
A
Notes to
Table 1–4:
(1) This value is specified for normal device operation. The value varies during device power-up. This applies for all
V
CCIO
settings (3.3, 3.0, 2.5, 1.8, 1.5, and 1.2 V).
(2) 10
A
I/O leakage current limit is applicable when the internal clamping diode is off. A higher current can be the
observed when the diode is on.
Bus Hold
Bus hold retains the last valid logic state after the source driving it either enters the
high impedance state or is removed. Each I/O pin has an option to enable bus hold in
user mode. Bus hold is always disabled in configuration mode.
Table 1–5
lists bus hold specifications for Cyclone III devices.
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