SNC21085

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

OSCILLATOR ...............................................................................................................5

5.2

ROM ..........................................................................................................................5

5.3

RAM ..........................................................................................................................5

5.4

POWER DOWN MODE..................................................................................................5

5.5

SAMPLING RATE COUNTER .........................................................................................5

5.6

I/O PORTS...................................................................................................................6

5.7

IR FUNCTION ..............................................................................................................6

5.8

PWM IO CONTROL.....................................................................................................6

5.9

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

Ver: 1.0

November 08, 2006

1