SNC21200A
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
PWM IO CONTROL .................................................................................................... 6
5.10 WATCH DOG TIMER................................................................................................... 6
5.11 PUSH-PULL DAC & CURRENT DA OUTPUT............................................................... 7
5.12 EVENT MARK............................................................................................................. 8
6. ABSOLUTE MAXIMUM RATING ............................................................................. 9
7. ELECTRICAL CHARACTERISTICS ........................................................................ 9
8. APPLICATION CIRCUIT .......................................................................................... 10
8.1
8.2
GENERAL APPLICATION............................................................................................ 10
MOTOR APPLICATION ............................................................................................... 11
1
Ver1.1
November 6, 2009