MA108 Datasheet, PDF(2/19 Page) Megawin Technology Co., Ltd

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MA108 Datasheet, PDF (2/19 Pages) Megawin Technology Co., Ltd – USB Low Speed

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MA108

USB Low Speed HID Keyboard V1.01

Contents

1 Description ..................................................................................................... 3

2 Features......................................................................................................... 4

3 Block Diagram................................................................................................ 5

4 Pin Configurations.......................................................................................... 6

4.1

Pin-out for LQFP48-pin Package.................................................................................... 6

4.2

Pad Location .................................................................................................................. 6

4.3

Package Dimensions...................................................................................................... 6

4.4

Pin Description ............................................................................................................... 7

5 Keyboard Function Description...................................................................... 8

5.1

Feature ........................................................................................................................... 8

5.2

Support Key Code Range .............................................................................................. 9

5.2.1

101 Standard Key................................................................................................... 9

5.2.2

Consumer : Usage Page 0C................................................................................. 10

5.2.3

Generic Desktop Control : Usage Page 01 .......................................................... 10

5.3

Generic Desktop Control LED Status ........................................................................... 10

5.4

Key Matrix .................................................................................................................... 11

5.4.1

Model 0 : Silver Membrane................................................................................... 11

5.4.2

Model 1 : Carbon Membrane................................................................................ 12

6 Reference Design ........................................................................................ 13

6.1

Model 0 Circuit : Silver Membrane ............................................................................... 13

6.2

Model 1 Circuit : Carbon Membrane............................................................................. 14

6.3

Keyboard BOM List ...................................................................................................... 15

6.4

Keyboard EMI Reference ............................................................................................. 15

6.4.1

Model 0 EMI : Silver Membrane ........................................................................... 16

6.4.2

Model 1 EMI : Carbon Membrane ........................................................................ 17

7 Electrical Characteristics.............................................................................. 18

7.1

DC ................................................................................................................................ 18

7.2

USB Transceiver Electrical Characteristics .................................................................. 18

8 Revision History ........................................................................................... 19

This document information is the intellectual property of Megawin Technology.

QP-7300-03D

2/19

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