1–34

Chapter 1: Cyclone IV Device Datasheet

Switching Characteristics

Cyclone IV Device Handbook,

May 2013

Altera Corporation

Volume 3

IOE Programmable Delay

Table 1–40 and Table 1–41 list the IOE programmable delay for Cyclone IV E 1.0 V

core voltage devices.

Table 1–40. IOE Programmable Delay on Column Pins for Cyclone IV E 1.0 V Core Voltage Devices (1), (2)

Parameter

Paths Affected

Number

of

Setting

Min

Offset

Max Offset

Unit

Fast Corner

Slow Corner

C8L

I8L

C8L

C9L

I8L

Input delay from pin to

internal cells

Pad to I/O

dataout to core

7

0

2.054

1.924

3.387

4.017

3.411

ns

Input delay from pin to

input register

Pad to I/O input

register

8

0

2.010

1.875

3.341

4.252

3.367

ns

Delay from output register

to output pin

I/O output

register to pad

2

0

0.641

0.631

1.111

1.377

1.124

ns

Input delay from

dual-purpose clock pin to

fan-out destinations

Pad to global

clock network

12

0

0.971

0.931

1.684

2.298

1.684

ns

Notes to Table 1–40:

(1) The incremental values for the settings are generally linear. For the exact values for 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 1–41. IOE Programmable Delay on Row Pins for Cyclone IV E 1.0 V Core Voltage Devices (1), (2)

Parameter

Paths Affected

Number

of

Setting

Min

Offset

Max Offset

Unit

Fast Corner

Slow Corner

C8L

I8L

C8L

C9L

I8L

Input delay from pin to

internal cells

Pad to I/O

dataout to core

7

0

2.057

1.921

3.389

4.146

3.412

ns

Input delay from pin to

input register

Pad to I/O input

register

8

0

2.059

1.919

3.420

4.374

3.441

ns

Delay from output register

to output pin

I/O output

register to pad

2

0

0.670

0.623

1.160

1.420

1.168

ns

Input delay from

dual-purpose clock pin to

fan-out destinations

Pad to global

clock network

12

0

0.960

0.919

1.656

2.258

1.656

ns

Notes to Table 1–41:

(1) The incremental values for the settings are generally linear. For the exact values for 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.