SNC21085A
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
AUTO REPEAT FUNCTION........................................................................................... 5
I/O PORTS .................................................................................................................. 5
IR FUNCTION ............................................................................................................. 6
WATCH DOG TIMER................................................................................................... 6
5.10 PUSH-PULL OUTPUT................................................................................................... 7
5.11 EVENT MARK............................................................................................................. 7
6. ABSOLUTE MAXIMUM RATING ............................................................................. 8
7. ELECTRICAL CHARACTERISTICS ........................................................................ 8
8. APPLICATION CIRCUIT ............................................................................................ 9
8.1
8.2
GENERAL APPLICATION.............................................................................................. 9
MOTOR APPLICATION ............................................................................................... 10
1
Ver1.1
April 28, 2009