SNC12040
One Channel Speech Controller
1. INTRODUCTION
SNC12040 is a one-channel voice synthesizer IC with Push-Pull direct drive circuit. It
built-in a 4-bit tiny controller with three 4-bit I/O ports. By programming through the tiny
controller in SNC12040, 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
40 seconds voice capacity are provided (@6KHZ sample rate)
Built in a 4-bit tiny controller
I/O Port
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Three 4-bit I/O ports P1, P2 and P3 are provided.
The driving/sink current of P3.2 & P3.3 is up to 8mA/16mA
The IO pins P3.3 can be modulated with 38.5Khz carry signal to implement IR
function.
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64*4 bits RAM are provided
Maximum 16k program ROM is provided
128K*10 shared ROM for voice data and program
Readable ROM code data
Built in one channel speech synthesizer
Adaptive playing speed from 2.5k-20kHz is provided
ꢀ Built in an 8-level volume control Push-Pull Direct Drive circuit output, can directly
connected to Speaker for sound output.
System clock: 2MHz
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ꢀ Event Mark function supported
ꢀ Low Power Reset
ꢀ Watch Dog Timer Supported
3. PIN ASSIGNMENT
Symbol
P10~P13
P20~P23
P30~P33
Rosc
I/O Function Description
I/O I/O port 1: IO
I/O I/O port 2: IO
I/O I/O port 3: IO
I
Oscillation component connection pin
Push-Pull output 1
BUO1
BUO2
RST
O
O
I
Push-Pull output 2
RST=1ꢁReset Chip (Active H)
VDD
GND
Test
I
I
I
Positive power supply
Negative power supply
Test pin
3
Ver: 1.4
March 17, 2005
SONIX [ SONIX TECHNOLOGY COMPANY ]
