View SNC15120P_3671418.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

SNC15120P one channel speech controller otp v1.2 nov 18, 2008 1 ===================== contents ==================== = 1. introduction....................................... ................................................... ..................3 2. features ........................................... ................................................... ........................3 3. pin assignment..................................... ................................................... .................4 4. block diagram ...................................... ................................................... ...............5 5. function descriptions .............................. ................................................... ......5 5.1 o scillator ................................................... ................................................... .........5 5.2 rom .............................................. ................................................... .........................5 5.3 ram .............................................. ................................................... .........................6 5.4 p ower d own m ode ................................................... ...............................................6 5.5 s ampling r ate c ounter ................................................... ......................................6 5.6 i/o p orts ................................................... ................................................... .............6 5.7 pwm o utput ................................................... ................................................... ......7 5.8 w atch d og t imer ................................................... .................................................7 5.9 ir f unction ................................................... ................................................... ........7 6. absolute maximum rating ............................ ..................................................8 7. electrical characteristics ......................... ................................................8 8. application circuit ................................ ................................................... ..........9 8.1 g eneral application ................................................... ............................................9 8.2 m otor application ................................................... .............................................10
SNC15120P one channel speech controller otp v1.2 nov 18, 2008 2 amendent history version date description v1.0 july 14, 2008 first issue v1.1 nov 03,2008 modify application circuit v1.2 nov 18,2008 add otp mode programming pin
SNC15120P one channel speech controller otp v1.2 nov 18, 2008 3 1. introduction SNC15120P is a one-channel voice synthesizer one time program ic with pwm direct drive circuit. it built in a 4-bit tiny controll er with four 4-bit i/o ports. by programming through the tiny controller in SNC15120P , user?s varied applications including voice section combination, key trigger arrangem ent, output control, and other logic functions can be easily implemented. 2. features single power supply 2.4v ? 3.6v 120 seconds voice capacity are provided (@6khz sample rat e) 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 244k*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 t o speaker for sound output. system clock: 2mhz event mark function supported low power detect watch dog timer supported
SNC15120P one channel speech controller otp v1.2 nov 18, 2008 4 3. pin assignment symbol i/o function description p10~p13 i/o i/o port 1: io p20~p23 i/o i/o port 2: io p40~p43 i/o i/o port 4: io p50~p53 i/o i/o port 5: io rosc i oscillation component connection pin buo1 o pwm output 1 buo2 o pwm output 2 rst i rst=1 reset chip (active h) vdd i positive power supply gnd i negative power supply cvdd i core circuit positive power supply cgnd i core circuit negative power supply test i test pin vpp0 i otp programming voltage vpp1 i otp programming voltage vpp2 i otp programming voltage otp mode programming pin symbol chip pin name i/o status description rst rst input into otp mode, high active. vpp0 vpp0 input vpp0 for otp program. (vpp=7.5v) vpp1 vpp1 input vpp1 for otp program. (vpp=7.5v) vpp2 vpp2 input vpp2 for otp program. (vpp=7.5v) clk p10 input otp mode clock input pgmb / data out p11 input / output pgmb of otp program mode. data out of otp verify mode. data in p12 input series/mode/address/data input of otp mode otp rst p13 input otp reset of otp mode, low active parity check p20 output input data parity check parallel data in/out p53 ~ p40 input / output parallel interface otp data input/out. p53, p52, p51 ,p50, p43 ,p42 ,p41 ,p40 (msb lsb)
SNC15120P one channel speech controller otp v1.2 nov 18, 2008 5 4. block diagram 5. function descriptions 5.1 oscillator SNC15120P accepts rc type oscillator for system clock. the t ypical circuit diagram for oscillator is listed as follows. 5.2 rom SNC15120P contains a substantial 244k words (12-bit) int ernal rom, which is shared by program and resource data. program, voice and data are shared within this same 244k words rom. r osc vcc rc oscillator rom program/speech 244k 12 bits osc address pointers/ stack voice synthesizer alu sram (128 nibbles) timer pwm circuit timing generator sampling rate counter io port 5 io port 2 io port 1 watch dog timer io port 4
SNC15120P one channel speech controller otp v1.2 nov 18, 2008 6 5.3 ram SNC15120P 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 e ach 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 i n 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) any valid data transition (l h or h l) occurring on any io pin can be used to start the system clock and ret urn to normal operating mode. 5.5 sampling rate counter the unique sampling rate counter is designed in voice cha nnel to be able to play diverse voices at different sample playing rates. the pl aying rate can be adaptively set up among from the wide ranges of 2.5khz to 20khz. th is architecture yields a high-quality voice synthesis that sounds very close to its o riginal 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. a ny 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. 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/16 ma p o rt d a ta p o rt s ta tu s t o in te rn a l d a ta b u s r e a d c o n tro l p a d w e a k e s d r e s is to r
SNC15120P one channel speech controller otp v1.2 nov 18, 2008 7 5.7 pwm output an pwm circuit is built-in SNC15120P. the maximum resol ution of pwm is 8 bits . two huge output stage circuits are designed in SNC15120P . with this advanced circuit, the chip is capable of driving speaker directly wit hout external transistors. buo1 buo2 pwm output 5.8 watch dog timer SNC15120P built an internal wdt (watch dog timer). t his 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 di sabled. 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.
SNC15120P one channel speech controller otp v1.2 nov 18, 2008 8 6. absolute maximum rating items symbol min max unit. supply voltage v dd -v -0.3 +3.7 v input voltage v in v ss -0.3 v dd +0.3 v operating temperature t op 0 55.0 o c storage temperature t stg -55.0 +125.0 o c 7. electrical characteristics item sym. min. typ. max. unit condition operating voltage v dd 2.4 3.0 3.6 v standby current i sby - 2.0 - ua v dd =3.0v, no load program mode voltage v pp 7.25 7.5 7.75 v otp programming voltage in normal mode vpp can be floating. operating current i opr - 10 - ma v dd =3v, no load input current of p1, p2, p4, p5 i ih - 3.0 - ua v dd =3v,v in =3v drive current of p1, p4 i od 4 - ma v dd =3v,v o =2.4v sink current of p1, p4 i os 6 - ma v dd =3v,v o =0.4v drive current of p2, p5 i od 8 - ma v dd =3v,v o =2.4v sink current of p2, p5 i os 16 - ma v dd =3v,v o =2.4v pwm drive current i pp - 400 - ma vdd=3v,vbou=1.5v oscillation freq. f osc - 2.0 - mhz v dd =3v
SNC15120P one channel speech controller otp v1.2 nov 18, 2008 9 8. application circuit 8.1 general application 1. it is suggested to add a capacitor (c1), 104, be tween vdd with gnd to keep power stable with general application. and this cap acitor is strongly suggested to be as close to the chip as possible. 2. it is suggested that vdd = 2.4v~3.6v
SNC15120P one channel speech controller otp v1.2 nov 18, 2008 10 8.2 motor application there are some suggestions about pcb layout when us er use SNC15120P ic with motor applications. (1) the capacitor c1 c8 (104) is strongly suggested to be as close to the chip a s possible. (2) it had better let osc components (r) get close to i c chip. (3) osc components had better get far away large curre nt applications. (4) separate ic power path with large current applica tion power path to avoid affect ic working by power drop from large current applicatio n. (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. (8) it is suggested that vdd = 2.4v~3.6v.
SNC15120P one channel speech controller otp v1.2 nov 18, 2008 11 disclaimer the information appearing in sonix web pages (?this p ublication?) is believed to be accurate. however, this publication could contain technical inaccuraci es or typographical errors. the reader should not assume that this publication is err or-free or that it will be suitable for any particular purpose. sonix makes no war ranty, express, statutory implied or by description in this publication or other documents which are referenced by or linked to this publication. in no event shall so nix be liable for any special, incidental, indirect or consequential damages of any kind , or any damages whatsoever, including, without limitation, those result ing from loss of use, data or profits, whether or not advised of the possibility of d amage, and on any theory of liability, arising out of or in connection with the use or performance of this publication or other documents which are referenced by or linked to this publication. this publication was developed for products offered in ta iwan. sonix may not offer the products discussed in this document in other countries. information is subject to change without notice. please contact sonix or its local representative for information on offerings available. integrated circui ts sold by sonix are covered by the warranty and patent indemnification provisions stip ulated in the terms of sale only. the application circuits illustrated in this document are for reference purposes only. sonix disclaims all warranties, including the warra nty of merchantability or fitness for any purpose. sonix reserves the right to halt production or alter the specifications and prices, and discontinue marketing the products listed at any time without notice. accordingly, the reader is cautioned to verify that the data sheets and other information in this publication are current before placing orders. products described herein are intended for use in normal commercial applications. applications involving unusual environmental or reliabi lity requirements, e.g. military equipment or medical life support equipment, are specif ically not recommended without additional processing by sonix for such applicati on.

▲Up To Search▲

Price & Availability of SNC15120P

	To Download SNC15120P Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .