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
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
−
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.
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
Event Mark function supported
Low Power Reset
Watch Dog Timer Supported
3. PIN ASSIGNMENT
Symbol
P10~P13
P20~P23
P30~P33
Rosc
BUO1
BUO2
RST
VDD
GND
Test
Ver: 1.4
I/O
I/O
I/O
I/O
I
O
O
I
I
I
I
Function Description
I/O port 1: IO
I/O port 2: IO
I/O port 3: IO
Oscillation component connection pin
Push-Pull output 1
Push-Pull output 2
RST=1 Reset Chip (Active H)
Positive power supply
Negative power supply
Test pin
3
March 17, 2005
SONIX [ SONIX TECHNOLOGY COMPANY ]
