1–6

Chapter 1: Cyclone III Device Datasheet

Electrical Characteristics

Cyclone III Device Handbook

July 2012

Altera Corporation

Volume 2

OCT Specifications

Table 1–6 lists the variation of OCT without calibration across process, temperature,

and voltage.

OCT calibration is automatically performed at device power-up for OCT enabled

I/Os.

Table 1–7 lists the OCT calibration accuracy at device power-up.

Bus-hold

low,

overdrive

current

—

125

—

175

—

200

—

300

—

500

—

500

A

Bus-hold

high,

overdrive

current

—

–125

—

–175

—

–200

—

–300

—

–500

—

–500

A

Bus-hold trip

point

—

0.3

0.9

0.375

1.125

0.68

1.07

0.7

1.7

0.8

2

0.8

2

V

Note to Table 1–5:

(1) The bus-hold trip points are based on calculated input voltages from the JEDEC standard.

Table 1–5. Cyclone III Devices Bus Hold Parameter

Parameter

Condition

Unit

1.2

1.5

1.8

2.5

3.0

3.3

Min

Max

Min

Max

Min

Max

Min

Max

Min

Max

Min

Max

Table 1–6. Cyclone III Devices Series OCT without Calibration Specifications

Description

Resistance Tolerance

Unit

Commercial

Max

Industrial and Automotive

Max

Series OCT without

calibration

3.0

±30

±40

%

2.5

±30

±40

%

1.8

+40

±50

%

1.5

+50

±50

%

1.2

+50

±50

%

Table 1–7. Cyclone III Devices Series OCT with Calibration at Device Power-Up Specifications

Description

Calibration Accuracy

Unit

Commercial Max

Industrial and Automotive

Max

Series OCT with

calibration at device

power-up

3.0

±10

±10

%

2.5

±10

±10

%

1.8

±10

±10

%

1.5

±10

±10

%

1.2

±10

±10

%