1–26

Chapter 1: Cyclone III Device Data Sheet

Switching Characteristics

Cyclone III Device Handbook, Volume 2

© January 2010

Altera Corporation

IOE Programmable Delay

Table 1–37 and Table 1–38 list IOE programmable delay for Cyclone III devices.

Table 1–37. Cyclone III Devices IOE Programmable Delay on Column Pins (Note 1), (2)

Parameter

Paths

Affected

Number

of

Settings

Min

Offset

Max Offset

Unit

Fast Corner

Slow Corner

A7, I7

C6

C6

C7

C8

I7

A7

Input delay from pin to

internal cells

Pad to I/O

dataout to

core

7

0

1.211

1.314

2.175

2.32

2.386

2.366

2.49

ns

Input delay from pin to

input register

Pad to I/O

input register

8

0

1.203

1.307

2.19

2.387

2.54

2.43

2.545

ns

Delay from output

register to output pin

I/O output

register to

pad

2

0

0.479

0.504

0.915

1.011

1.107

1.018

1.048

ns

Input delay from

dual-purpose clock pin

to fan-out destinations

Pad to global

clock

network

12

0

0.664

0.694

1.199

1.378

1.532

1.392

1.441

ns

Notes to Table 1–37:

(1) The incremental values for the settings are generally linear. For exact values of each setting, use the latest version of the Quartus II software.

(2) The minimum and maximum offset timing numbers are in reference to setting ‘0’ as available in the Quartus II software.

Table 1–38. Cyclone III Devices IOE Programmable Delay on Row Pins

(Note 1), (2)

Parameter

Paths

Affected

Number

of

Settings

Min

Offset

Max Offset

Unit

Fast Corner

Slow Corner

A7, I7

C6

C6

C7

C8

I7

A7

Input delay from pin to

internal cells

Pad to I/O

dataout to

core

7

0

1.209

1.314

2.174

2.335

2.406

2.381

2.505

ns

Input delay from pin to

input register

Pad to I/O

input register

8

0

1.207

1.312

2.202

2.402

2.558

2.447

2.557

ns

Delay from output

register to output pin

I/O output

register to

pad

2

0

0.51

0.537

0.962

1.072

1.167

1.074

1.101

ns

Input delay from

dual-purpose clock pin

to fan-out destinations

Pad to global

clock network

12

0

0.669

0.698

1.207

1.388

1.542

1.403

1.45

ns

Notes to Table 1–38:

(1) The incremental values for the settings are generally linear. For exact values of each setting, use the latest version of Quartus II software.

(2) The minimum and maximum offset timing numbers are in reference to setting ‘0’ as available in the Quartus II software