SNC12168
One Channel Speech Controller
===================== CONTENTS =====================
1. INTRODUCTION............................................................................................................3
2. FEATURES ......................................................................................................................3
3. PIN ASSIGNMENT.........................................................................................................3
4. BLOCK DIAGRAM........................................................................................................4
5. FUNCTION DESCRIPTIONS .......................................................................................4
5.1
5.2
5.3
5.4
5.5
5.6
5.7
5.8
5.9
OSCILLATOR ...............................................................................................................4
ROM ..........................................................................................................................4
RAM ..........................................................................................................................5
POWER DOWN MODE..................................................................................................5
SAMPLING RATE COUNTER.........................................................................................5
I/O PORTS...................................................................................................................5
PUSH-PULL OUTPUT ...................................................................................................6
WATCH DOG TIMER....................................................................................................6
IR FUNCTION ..............................................................................................................6
6. ABSOLUTE MAXIMUM RATING ..............................................................................6
7. ELECTRICAL CHARACTERISTICS .........................................................................7
8. APPLICATION CIRCUIT .............................................................................................8
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Ver: 1.4
March 17, 2005