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SNC12010
One Channel Speech Controller
===================== CONTENTS =====================
1. 2. 3. 4. 5. INTRODUCTION............................................................................................................3 FEATURES ......................................................................................................................3 PIN ASSIGNMENT.........................................................................................................3 BLOCK DIAGRAM ........................................................................................................4 FUNCTION DESCRIPTIONS .......................................................................................4 5.1 5.2 5.3 5.4 5.5 5.6 5.7 5.8 5.9 6. 7. 8. OSCILLATOR ...............................................................................................................4 ROM ..........................................................................................................................4 RAM ..........................................................................................................................5 POWER DOWN MODE..................................................................................................5 SAMPLING RATE COUNTER .........................................................................................5 I/O PORTS...................................................................................................................5 PUSH-PULL OUTPUT ...................................................................................................6 WATCH DOG TIMER....................................................................................................6 IR FUNCTION ..............................................................................................................6
ABSOLUTE MAXIMUM RATING ..............................................................................6 ELECTRICAL CHARACTERISTICS .........................................................................7 APPLICATION CIRCUIT .............................................................................................8
Ver: 1.4
1
March 17, 2005
SNC12010
One Channel Speech Controller
AMENDENT HISTORY
Version Ver 1.3 Ver 1.4 Ver 1.5 Date January 14, 2005 March 17, 2005 May 25, 2005 First issue Modify Standby & operation current Remove APPLICATION CIRCUIT RST pin capacitance Add IR Description Description
Ver: 1.4
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SNC12010
One Channel Speech Controller
1. INTRODUCTION
SNC12010 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 SNC12010, 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 10 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 32K*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
SNC12010
One Channel Speech Controller
4. Block Diagram
ROM
Program/Speech 32Kx10 bits Address Pointers/ STACK SRAM (64 nibbles) Timer ALU IO port 1 Timing Generator
OSC
Sampling Rate Counter
Watch Dog Timer Push-Pull Circuit IO port 3
Voice Synthesizer IO port 2
5. FUNCTION DESCRIPTIONS 5.1 Oscillator
SNC12010 accepts RC type oscillator for system clock. The typical circuit diagram for oscillator is listed as follows.
VCC
RC Oscillator
5.2 ROM
SNC12010 contains a substantial 32K words (10-bit) internal ROM, which is shared by program and resource data. Program, voice and data are shared within this same 32K words ROM.
Ver: 1.4
4
r
March 17, 2005
OSC
SNC12010
One Channel Speech Controller
5.3 RAM
SNC12010 contains 64 nibble RAM (64 x 4-bits). The 64 nibble RAM is divided into four pages (page 0 to page 3, 16 nibble RAM on each page). In our programming structure, users can use the instructions, PAGE n (n=0 to 3) to switch and indicate the RAM page. Besides, users can use direct mode, M0 ~ M15 in the data transfer type instructions, to access all 16 nibbles of each page
5.4 Power Down Mode
"End" instruction makes the IC entering into Stop Mode will stop the system clock for power savings (<3uA @VDD=3V and <6uA @VDD=4.5V.) Any valid data transition (L H or H L) occurring on any IO pin can be used to start the system clock and return to normal operating mode.
5.5 Sampling Rate Counter
The unique sampling rate counter is designed in voice channel to be able to play diverse voices at different sample playing rates. The playing rate can be adaptively set up among from the wide ranges of 2.5KHz to 20KHz. This architecture yields a high-quality voice synthesis that sounds very close to its original source when played through the same amplifier and speaker circuitry.
5.6 I/O Ports
There are three 4-bit I/O ports P1, P2, and P3. Any I/O can be individually programmed as either input pull low or output. Any valid data transition (H L or L H) of P1, P2 and P3 can reactivate the chip when it is in power-down stage.
Port Data PAD Port Status Weak
To Internal Data Bus
Read Control
I/O Port Configuration Note: (1) Weak N-MOS can serve as pull-low resistor. (2) The driving/sink current of P3.3 & P3.2 is up to 8mA/16mA
5
Ver: 1.4
March 17, 2005
SNC12010
One Channel Speech Controller
5.7 Push-Pull Output
An 8-level volume control Push-Pull Direct Drive circuit is built-in SNC12010. The maximum resolution of Push-Pull is 7 bits. Two huge output stage circuits are designed in SNC12010. With this advanced circuit, the chip is capable of driving speaker directly without external transistors.
BUO1 BUO2
Push-Pull Output
5.8 Watch Dog Timer
SNC12010 built an internal WDT (Watch Dog Timer). This Watchdog timer would issue resets signal to this chip if it is not cleared before reaching terminal count (1sec). The watchdog timer is enabled at reset and cannot be disabled.
5.9 IR Function
P33 can be modulated with 38.5KHz square wave before sent out to P33 pin. The IR signal can be achieved by this modulated signal.
6. ABSOLUTE MAXIMUM RATING
Items Supply Voltage Input Voltage Operating Temperature Storage Temperature Symbol VDD-V VIN TOP TSTG Min -0.3 VSS-0.3 0 -55.0 Max 6.0 VDD+0.3 55.0 125.0 Unit. V V o C o C
Ver: 1.4
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March 17, 2005
SNC12010
One Channel Speech Controller
7. ELECTRICAL CHARACTERISTICS
Item Operating Voltage Standby current Operating Current Input current of P1, P2, P3 Drive current of P1, P2, P3.0, P3.1 Sink Current of P1, P2, P3.0, P3.1 Drive current of P3.2, P3.3 Sink current of P3.2, P3.3 Push-Pull current Push-Pull current Oscillation Freq. Sym. Min. Typ. Max. Unit Condition VDD 2.4 3.0 5.5 V ISBY 3.0 uA VDD=3V, no load 5 VDD=4.5V, no load IOPR 300 uA VDD=3V, no load IIH 3.0 uA VDD=3V,VIN=3V IOD IOS IOD IOS IPP IPP FOSC 3 4 6 10 4 6 8 16 70 100 2.0 mA VDD=3V,VO=2.4V mA VDD=3V,VO=0.4V mA VDD=3V,VO=2.4V mA VDD=3V,VO=2.4V mA VDD=3V, Output 1K Sin wave. mA VDD=4.5V, Ouput 1K Sin wave. MHz VDD=3V
Ver: 1.4
7
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One Channel Speech Controller
SNC12010
VDD
TR1 TR5 TR9 TR13
VDD
P10 TR2 TR6 TR10 TR14
R
OSC
P11
TR3
TR7
TR11
TR15
RST
SNC12010
P12 P13
TR4
TR8
TR12
TR16
P30
P20
P32 P33
P22 P23
8. APPLICATION CIRCUIT
BUO1
BUO2
GND
Ver: 1.4
8
P31
P21
March 17, 2005
SNC12010
One Channel Speech Controller
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Ver: 1.4
9
March 17, 2005

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