SNC26021
One Channel Speech Controller
===================== CONTENTS =====================
1. INTRODUCTION............................................................................................................3
2. FEATURES ......................................................................................................................3
3. PIN ASSIGNMENT.........................................................................................................4
4. BLOCK DIAGRAM ........................................................................................................4
5. FUNCTION DESCRIPTIONS .......................................................................................5
5.1
5.2
5.3
5.4
5.5
5.6
5.7
5.8
5.9
OSCILLATOR ...............................................................................................................5
ROM ..........................................................................................................................5
RAM ..........................................................................................................................6
POWER DOWN MODE..................................................................................................6
SAMPLING RATE COUNTER .........................................................................................6
I/O PORTS ...................................................................................................................6
PWM OUTPUT ............................................................................................................7
WATCH DOG TIMER....................................................................................................7
IR FUNCTION ..............................................................................................................7
5.10 PWM IO CONTROL .....................................................................................................7
6. ABSOLUTE MAXIMUM RATING ..............................................................................7
7. ELECTRICAL CHARACTERISTICS .........................................................................8
8. APPLICATION CIRCUIT .............................................................................................9
8.1
8.2
GENERAL APPLICATION...............................................................................................9
MOTOR APPLICATION ................................................................................................10
1
Ver: 1.7
October 14, 2009
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