Motorola MC9190 User Manual

Page 2 of 10
TABLE OF CONTENTS
1. INTRODUCTION ............................................................................................................................3
1.1 Purpose ...................................................................................................................................................... 3
2. MC9190 EXTERNAL POWER PIN ..............................................................................................4
2.1 Background ............................................................................................................................................... 4
2.2 Theory of Operation .................................................................................................................................. 4
3. DESIGN .............................................................................................................................................7
3.1 Software Design ........................................................................................................................................ 7
3.1.1 Sample code to enable external power ...........................................................................................7
3.1.2 State at EXP Open and Close .........................................................................................................8
3.1.3 Boot up state...................................................................................................................................8
3.1.4 Suspend and Resume ......................................................................................................................9
3.2 Test Application ........................................................................................................................................ 9
3.2.1 Open and Close buttons in the COM Block ...................................................................................9
3.2.2 Open and close buttons in the Power Block ...................................................................................9
3.2.3 Enable and Disable buttons in the Power block ............................................................................9
3.2.4 Blank text box and the “X” button .................................................................................................9
4. NOTES ............................................................................................................................................ 10
TABLE OF FIGURES
Figure 1 – MC9190 bottom port ............................................................................................................. 4
Figure 2 - Block diagram.......................................................................................................................... 6
Figure 3 - Test Application ...................................................................................................................... 9
LIST OF TABLES
Table 1: MC9190 Bottom Port Pin-Outs ................................................................................................. 5

Motorola MC9190 Specifications

General

Brand	Motorola
Model	MC9190
Category	Handhelds
Language	English