1–4

Chapter 1: Cyclone III Device Datasheet

Electrical Characteristics

Cyclone III Device Handbook

July 2012

Altera Corporation

Volume 2

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 (1), (2)

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

Supply voltage for internal logic

—

1.15

1.2

1.25

V

Supply voltage for output buffers, 3.3-V

operation

—

3.135

3.3

3.465

V

Supply voltage for output buffers, 3.0-V

operation

—

2.85

3

3.15

V

Supply voltage for output buffers, 2.5-V

operation

—

2.375

2.5

2.625

V

Supply voltage for output buffers, 1.8-V

operation

—

1.71

1.8

1.89

V

Supply voltage for output buffers, 1.5-V

operation

—

1.425

1.5

1.575

V

Supply voltage for output buffers, 1.2-V

operation

—

1.14

1.2

1.26

V

Supply (analog) voltage for PLL

regulator

—

2.375

2.5

2.625

V

Supply (digital) voltage for PLL

—

1.15

1.2

1.25

V

Input voltage

—

–0.5

—

3.6

V

Output voltage

—

0

—

V

Operating junction temperature

For commercial use

0

—

85

°C

For industrial use

–40

—

100

°C

For extended temperature

–40

—

125

°C

For automotive use

–40

—

125

°C

Power supply ramp time

Standard power-on reset

(POR) (5)

50 µs

—

50 ms

—

Fast POR (6)

50 µs

—

3 ms

—

Magnitude of DC current across

PCI-clamp diode when enabled

——

—

10

mA

Notes to Table 1–3:

must be powered up and powered down at the same time.

(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.