SNC21040
1-CH H.Q. 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 ..........................................................................................................................5
POWER DOWN MODE..................................................................................................5
SAMPLING RATE COUNTER.........................................................................................5
I/O PORTS...................................................................................................................6
IR FUNCTION ..............................................................................................................6
PWM IO CONTROL.....................................................................................................6
WATCH DOG TIMER....................................................................................................6
5.10 PUSH-PULL OUTPUT ...................................................................................................7
5.11 MARK REGISTER .........................................................................................................7
5.12 LOW VOLTAGE HOLD .................................................................................................7
6. ABSOLUTE MAXIMUM RATING ..............................................................................8
7. ELECTRICAL CHARACTERISTICS .........................................................................8
8. APPLICATION CIRCUIT .............................................................................................9
1
Ver: 1.0
November 08, 2006
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