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Details, datasheet, quote on part number:W81281D
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Datasheet text preview:
W81281 USB Keyboard/ Device Controller
W81281
W81281 Data Sheet Revision History
Pages 1 2 3 4 5 6 7 8 9 10 11 All Dates 09/01/1997 12/16/1997 7/12/1999 Version 0.50 0.51 0.6 Version on Web First published. Update Features Update registers description Main Contents
Please note that all data and specifications are subject to change without notice. All the trade marks of products and companies mentioned in this data sheet belong to their respective owners. LIFE SUPPORT APPLICATIONS These products are not designed for use in life support appliances, devices, or systems where malfunction of these products can reasonably be expected to result in personal injury. Winbond customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Winbond for any damages resulting from such improper use or sales.
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Publication Release Date: July 1999 Revision 0.60
W81281
Preliminary
TABLE OF CONTENT
1. 2. 3 4. 5. 5.1 5.2 5.3 GENERAL DESCRIPTION ....... 1 FEATURES ........ 2 BLOCK DIAGRAM ........... 3 PIN CONFIGURATION ....4 PIN DESCRIPTION ..........6 40 PIN DIP..........6 28-PIN SOP ........ 8 48-PIN LQFP.....9
6 FUNCTIONAL DESCRIPTION ...... 11 6.1 FIRST IN FIRST OUT STORAGE (FIFO'S) ORGANIZATION ........... 11 6.1.1 INTERFACE TO THE MICROCONTROLLER:.....11 6.2 REGISTER DESCRITPION .... 12 6.2.1 Status Registers ...... 12 6.2.2 Control Registers ..... 13 6.3 RESET ....... 15 6.3.1 External Reset (Hardware Reset) ........... 16 6.3.2 Warm Reset (Software Reset) ....... 16 6.4 USB SUSPEND......16 6.5 USB RESUME:..........16 7. 7.1 7.2 7.3 7.4 7.5 8. 9. 10. PROGRAMMING NOTES: ..... 17 CONTROL REGISTERS ACCESS:..17 STATUS REGISTERS ACCESS:.....17 FIFOS ACCESS : ...... 17 SET STALL FOR ENDPOINT 0 - 4 : ........ 17 SET NULL DATA FOR IN TRANSACTION OF EP 0 :........18 ELECTRICAL CHARACTERISTICS & CAPACITANCE.....19 USB KEYBOARD SAMPLE APPLICATION ......... 22 PACKAGE DIMENSIONS.......24
APPENDIX A: WINBOND( W81281-004) DEFAULT MATRIX CODE ....... 28
II Publication Release Date: July 1999 Revision 0.60
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