User's Manual

SEJIN ELECTRON, INC

This Document contains proprietary to Sejin Electron, Inc. Use or disclosure without written

permission from an officer of Sejin is expressly forbidden.

Document number : R-FB-0

Page 8/13

Issued date : 2009-02-11

5 Electrical Specification

5.1 Power supply voltage

DC 5.0V

5.2 Power supply current consumption

Max 500mA

5.3 Insulation resistance

More than 100M ohm at 250V DC

5.4 Chattering and bounce

Operation force shall be applied according to the normal operating method at 5V DC, 5mA.There shall

be no bounce and chattering within 10msec when it is measured using a specially prepared tester or a

synchroscope.

※ Chattering and bounce are defined in the following diagram :

A:Chattering

B: Bounce

5.5 Cable length

1.6m (Straight)

5.6 Contact terminating assignment.

Contact Number Signal Name

1 VBUS

2 D-

3 D+

4 GND

Shell Shield

5.7 USB Soft Ware I/F

Compliant with USB Serial Bus Specification 2.0

High speed USB standard for USB HUB

Low speed USB standard for keyboard interface (Revision 1.1 September 23, 1998)