SONIX SNC15085

SNC15168
One Channel Speech Controller
===================== CONTENTS =====================
1.
INTRODUCTION............................................................................................................3
2.
FEATURES ......................................................................................................................3
3.
PIN ASSIGNMENT.........................................................................................................3
4.
BLOCK DIAGRAM ........................................................................................................4
5.
FUNCTION DESCRIPTIONS .......................................................................................4
5.1
5.2
5.3
5.4
5.5
5.6
5.7
5.8
5.9
OSCILLATOR ...............................................................................................................4
ROM ..........................................................................................................................4
RAM ..........................................................................................................................5
POWER DOWN MODE ..................................................................................................5
SAMPLING RATE COUNTER .........................................................................................5
I/O PORTS ...................................................................................................................5
PWM OUTPUT ............................................................................................................6
WATCH DOG TIMER ....................................................................................................6
IR FUNCTION ..............................................................................................................6
6.
ABSOLUTE MAXIMUM RATING ..............................................................................6
7.
ELECTRICAL CHARACTERISTICS .........................................................................7
8.
APPLICATION CIRCUIT .............................................................................................8
8.1
8.2
Ver: 1.5
GENERAL APPLICATION ...............................................................................................8
MOTOR APPLICATION ..................................................................................................9
1
October 30, 2008
SNC15168
One Channel Speech Controller
AMENDENT HISTORY
Version
Date
Description
Ver 1.0
Oct 30, 2007
First issue
Ver 1.1
May 28, 2008
Update Application Circuit
Ver 1.2
June 10, 2008
Refine Application Circuit
Ver 1.3
June 23, 2008
Refine Application Circuit
Ver 1.4
August 25 2008
Refine Application Circuit
Ver 1.5
October 30,2008
Refine Application Circuit
Ver: 1.5
2
October 30, 2008
SNC15168
One Channel Speech Controller
1. INTRODUCTION
SNC15168 is a one-channel voice synthesizer IC with PWM 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 SNC15168, 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
168 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, P4 and P5 are provided.
− The driving/sink current of P2 & P5 is up to 8mA/16mA
− The IO pins P2.3 can be modulated with 38.5Khz carry signal to implement IR
function.
128*4 bits RAM are provided
Maximum 64k program ROM is provided
352K*12 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 PWM circuit output, can directly connected to Speaker for sound
output.
System clock: 2MHz
Event Mark function supported
Low Power Detect.
Watch Dog Timer Supported
3. PIN ASSIGNMENT
Ver: 1.5
Symbol
P10~P13
P20~P23
P40~P43
P50~P53
Rosc
BUO1
I/O
I/O
I/O
I/O
I/O
I
O
Function Description
I/O port 1: IO
I/O port 2: IO
I/O port 4: IO
I/O port 5: IO
Oscillation component connection pin
BUO2
O
RST
I
PWM output 2
RST=1 Reset Chip (Active H)
VDDIO
GNDIO
CVDD
CGND
Test
I
I
I
I
I
Positive power supply for I/O
Negative power supply for I/O
Positive power supply for internal core
Negative power supply for internal core
Test pin
PWM output 1
3
October 30, 2008
SNC15168
One Channel Speech Controller
4. Block Diagram
ROM
Program/Speech
352K×12 bits
Address Pointers/ STACK
SRAM (128 nibbles)
OSC
Sampling Rate Counter
Watch Dog
Timer
Voice
Synthesizer
PWM
Circuit
Timer
ALU
IO port 1
Timing
Generator
IO port 2
IO port 4
IO port 5
5. FUNCTION DESCRIPTIONS
5.1 Oscillator
SNC15168 accepts RC type oscillator for system clock. The typical circuit diagram for
oscillator is listed as follows.
VCC
OSC
RC Oscillator
5.2 ROM
SNC15168 contains a substantial 352K words (12-bit) internal ROM, which is shared
by program and resource data. Program, voice and data are shared within this same
352K words ROM.
Ver: 1.5
4
October 30, 2008
SNC15168
One Channel Speech Controller
5.3 RAM
SNC15168 contains 128 nibble RAM (128 x 4-bits). The 128 nibble RAM is divided
into two pages (page 0 to page 1, 64 nibble RAM on each page). In our programming
structure, users can use the instructions, PAGE n (n=0 to 1) to switch and indicate the
RAM page. Besides, users can use direct mode, M0 ~ M63 in the data transfer type
instructions, to access all 64 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 four 4-bit I/O ports P1, P2, P4, and P5. 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, P4, and P5 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 P2 & P5 is up to 8mA/16mA
Ver: 1.5
5
October 30, 2008
SNC15168
One Channel Speech Controller
5.7 PWM Output
An PWM circuit is built-in SNC15168. The maximum resolution of PWM is 8 bits.
Two huge output stage circuits are designed in SNC15168. With this advanced
circuit, the chip is capable of driving speaker directly without external transistors.
BUO1
BUO2
PWM Output
5.8 Watch Dog Timer
SNC15168 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
P23 can be modulated with 38.5KHz square wave before sent out to P23 pin.
The IR signal can be achieved by this modulated signal.
6. ABSOLUTE MAXIMUM RATING
Items
Supply Voltage
Input Voltage
Operating Temperature
Storage Temperature
Ver: 1.5
Symbol
VDD-V
VIN
TOP
TSTG
Min
-0.3
VSS-0.3
0
-55.0
6
Max
6.0
VDD+0.3
55.0
125.0
Unit.
V
V
o
C
o
C
October 30, 2008
SNC15168
One Channel Speech Controller
7. ELECTRICAL CHARACTERISTICS
Item
Operating Voltage
Standby current
Operating Current
Input current of
P1, P2, P4, P5
Drive current of
P1, P4
Sink Current of
P1, P4
Drive current of P2, P5
Sink current of P2, P5
PWM current
PWM current
Oscillation Freq.
Ver: 1.5
Sym. Min. Typ. Max. Unit
Condition
VDD 2.4
3.0
5.5
V
ISBY
3.0
uA VDD=3V, no load
6.0
VDD=4.5V, no load
IOPR
300
uA VDD=3V, no load
IIH
3.0
uA VDD=3V,VIN=3V
IOD
3
4
-
mA VDD=3V,VO=2.4V
IOS
4
6
-
mA VDD=3V,VO=0.4V
IOD
IOS
IPP
6
10
-
8
16
120
-
IPP
-
150
-
FOSC
-
2.0
-
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
7
October 30, 2008
SNC15168
One Channel Speech Controller
8. APPLICATION Circuit
8.1 General application
It is suggested to add a capacitor (C1), 104, between VDD with GND to keep
power stable with general application. And this capacitor is strongly
suggested to be as close to the chip as possible.
Ver: 1.5
8
October 30, 2008
SNC15168
One Channel Speech Controller
8.2 Motor application
There are some suggestions about PCB layout when user use SNC15000
series IC with motor applications.
(1) The capacitor C1 C8 (104) is strongly suggested to be as close to the chip as
possible.
(2) It had better let OSC components (R) get close to IC chip.
(3) OSC components had better get far away large current applications.
(4) Separate IC power path with large current application power path to avoid affect
IC working by power drop from large current application.
(5) R2 (10 )separate VDDIO and CVDD.
(6) Let power cable thicker, especially for large current application.
(7) C2 C3 C4 and C5 C6 C7 (104) are connected at the shell of motor, positive
point and negative point of the motor.
Ver: 1.5
9
October 30, 2008
SNC15168
One Channel Speech Controller
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Ver: 1.5
10
October 30, 2008