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.
(1), (2)
Table 1–3. Cyclone III Devices Recommended Operating Conditions
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
(3)
VCCINT
Supply voltage for internal logic
—
1.15
1.2
1.25
V
Supply voltage for output buffers, 3.3-V
operation
—
—
—
—
—
—
—
3.135
2.85
3.3
3
3.465
3.15
V
V
V
V
V
V
V
Supply voltage for output buffers, 3.0-V
operation
Supply voltage for output buffers, 2.5-V
operation
2.375
1.71
2.5
1.8
1.5
1.2
2.5
2.625
1.89
(3), (4)
VCCIO
Supply voltage for output buffers, 1.8-V
operation
Supply voltage for output buffers, 1.5-V
operation
1.425
1.14
1.575
1.26
Supply voltage for output buffers, 1.2-V
operation
Supply (analog) voltage for PLL
regulator
(3)
VCCA
2.375
2.625
(3)
VCCD_PLL
Supply (digital) voltage for PLL
Input voltage
—
1.15
–0.5
0
1.2
—
—
—
—
—
—
1.25
3.6
V
V
VI
—
VO
Output voltage
—
VCCIO
85
V
For commercial use
For industrial use
For extended temperature
For automotive use
Standard power-on reset
0
°C
°C
°C
°C
–40
–40
–40
100
125
125
TJ
Operating junction temperature
50 µs
50 µs
—
—
—
—
50 ms
3 ms
10
—
—
(5)
(POR)
tRAMP
Power supply ramp time
(6)
Fast POR
Magnitude of DC current across
PCI-clamp diode when enabled
IDiode
—
mA
Notes to Table 1–3:
(1) VCCIO for all I/O banks must be powered up during device operation. All VCCA 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) VCCD_PLL must always be connected to VCCINT through a decoupling capacitor and ferrite bead.
(3) The VCC must rise monotonically.
(4) All input buffers are powered by the VCCIO 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
ALTERA [ ALTERA CORPORATION ]
