1–4

Chapter 1: DC and Switching Characteristics of HardCopy III Devices

Electrical Characteristics

HardCopy III Device Handbook, Volume 3

© December 2008

Altera Corporation

DC Characteristics

This section lists the input pin capacitances, on-chip termination tolerance, and hot

socketing specifications.

Supply Current

Standby current is the current the device draws after the device enters user mode with

no inputs/outputs toggling and no activity in the device. Since these currents vary

largely with the resources used, use the Excel-based Early Power Estimator (EPE) to

get supply current estimates for your design.

V

CCPD (3)

I/O pre-driver power supply, 3.0 V

—

2.85

3.0

3.15

V

I/O pre-driver power supply, 2.5 V

—

2.375

2.5

2.625

V

V

CCIO

I/O power supply, 3.0 V

—

2.85

3.0

3.15

V

I/O power supply, 2.5 V

—

2.375

2.5

2.625

V

I/O power supply, 1.8 V

—

1.71

1.8

1.89

V

I/O power supply, 1.5 V

—

1.425

1.5

1.575

V

I/O power supply, 1.2 V

—

1.14

1.2

1.26

V

V

CC_CLKIN

Differential clock input power

supply (top and bottom I/O banks

only)

—

2.375

2.5

2.625

V

V

CCBAT (4)

Battery back-up power supply for

design security volatile key

register

——

—

—

V

V

I

DC input voltage

—

–0.3

—

3.6

V

V

O

Output voltage

—

0

—

V

CCIO

V

T

J

Operating junction temperature

For

commercial

use

0—

85

°C

For industrial

use

–40

—

100

°C

t

RAMP

Power supply ramp time

Normal POR

(PORSEL=0)

50 µs

—

300 ms

—

Fast POR

(PORSEL=1)

50 µs

—

12 ms

—

Notes to Table 1–3:

(2) In Stratix III devices, this power supply is also used for programmable power technology.

(4) In HardCopy III devices, this power supply is not used.

Table 1–3. HardCopy III Device Recommended Operating Conditions – Preliminary (Part 2 of 2)

Symbol

Parameter

Conditions

Minimum

Typical

Maximum

Unit