Altera USB-Blaster II Manuel d'utilisateur télécharger pdf (Page 14)

2–4 Chapter 2: USB-Blaster II Download Cable Specifications

Operating Conditions

USB-Blaster II Download Cable October 2014 Altera Corporation

User Guide

1 Although a 10-pin surface mount header can be used for the download cable, Altera

recommends using a through-hole connector. Through-hole connectors hold up better

under the repeated insertion and removal.

Operating Conditions

The following tables summarize the maximum ratings, recommended operating

conditions, and DC operating conditions for the USB-Blaster II cable.

Table 2–3. USB-Blaster II Cable Absolute Maximum Ratings

Symbol Parameter Conditions Min Max Unit

CC(TRGT)

Target supply voltage With respect to

ground

–0.5 6.5 V

CC(USB)

USB supply voltage With respect to

ground

–0.5 6.0 V

Target side input current Pin 7 –100.0 100.0 mA

I(USB)

USB supply current

VBUS

— 200.0 mA

Target side output current Pins: 1, 5, 6, 8, 9 –50.0 50.0 mA

Table 2–4. USB-Blaster II Cable Recommended Operating Conditions

Symbol Parameter Conditions Min Max Unit

CC(TRGT)

Target supply voltage,

5.0-V operation

— 4.75 5.25 V

Target supply voltage,

3.3-V operation

—3.03.6V

Target supply voltage,

2.5-V operation

— 2.375 2.625 V

Target supply voltage,

1.8-V operation

— 1.71 1.89 V

Target supply voltage,

1.5-V operation

— 1.43 1.57 V

Table 2–5. USB-Blaster II Cable DC Operating Conditions (Part 1 of 2)

Symbol Parameter Conditions Min Max Unit

High-level input voltage V

CC(TRGT)

>= 2.0 V 0.7 x

CC(TRGT)

—V

CC(TRGT)

< 2.0 V 0.65 x

CC(TRGT)

—V

Low-level input voltage V

CC(TRGT)

>= 2.0 V — 0.3 x

CC(TRGT)

< 2.0 V — 0.2 x

CC(TRGT)

1 2 ... 9 10 11 12 13 14 15 16 17 18 19 20 21 22

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