SNC21120
1-CH H.Q. Speech Controller
1. INTRODUCTION
SNC21120 is a one-channel voice synthesizer IC with Push-Pull direct drive circuit. It
built in a 4-bit tiny controller with four 4-bit I/O ports. By programming through the tiny
controller in SNC21120, user’s varied applications including voice section combination,
key trigger arrangement, output control, and other logic functions can be easily
implemented.
2. FEATURES
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Single power supply 2.4V – 5.5V
System Clock is 2MHz, the instruction cycle is 4us
120 seconds voice capacity are provided (@6KHZ sample rate)
Built in a 4-bit tiny controller
I/O Port
ꢁ Four 4-bit I/O ports P1, P2, P3 and P6 are provided
ꢁ The driving/sink current of P3.2 & P3.3 is up to 8mA/16mA
ꢁ The IO pins P3.3 or P2.3 can be modulated with 38.5Khz carry signal to
implement IR function.
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PWM output for IO (P3.0~P3.3)
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128*4 bits RAM are provided
Maximum 16k program ROM is provided
384K*10 shared ROM for voice data and program
Readable ROM code data
Built-in one channel High Quality speech synthesizer
Adaptive playing speed from 2.5k-20kHz is provided
Automatic repetition
Support 5-bit ADPCM and 10 bit PCM format
Built in an 8-level volume control Push-Pull Direct Drive circuit output, can directly
connected to Speaker for sound output
12 bit Push-Pull DA output and 12 bit current DAC output
Event Mark function supported
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Low-Voltage Detect circuit
Watch Dog Timer Reset function.
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Ver: 1.0
November 08, 2006
SONIX [ SONIX TECHNOLOGY COMPANY ]
