NPC SM1350 series High Tone Quality Melody LSI
Contents
1. 4 7 to 10uF N onpolarity Parameter Pin name Measurement state 1 Melody output circuit BTL 2 STN Pull up 3 STOP Pull up 4 ICN Pull up 5 LH Pull up 6 MODE Pull up 7 S0 to S3 Pull up MEASUREMENT CIRCUIT Co F Cp 4MHz VDD XT S0 XTN o o S1 TO o o J 82 T3N 4 0 o 3 T2N ae o o _ MODE TIN o o LH N SBN o o _ STOP MSB o o STN SP C lt BUSYN SPN lt lt CT VOL ICN VSS a 200K O luF Note that circuit constants are reference values NIPPON PRECISION CIRCUITS 20 M1350 series NIPPON PRECISION CIRCUITS INC reserves the right to make changes to the products described in this data sheet in order to improve the design or performance and to supply the best possible products Nippon Precision Circuits Inc assumes no responsibility for the use of any circuits shown in this data sheet conveys no license under any patent or other rights and makes no claim that the circuits are free from patent infringement Applications for any devices shown in this data sheet are for illustration only and Nippon Precision Circuits Inc makes no claim or warranty that such applications will be suitable for the use specified without further testing or modification The products described in this data sheet are not intended to use for the appa2. J SM 13501 Nv RS UPC NIPPON PRECISION CIRCUITS INC OVERVIEW The SM1350 series are single chip high tone quality melody ICs fabricated using NPC s Molybdenum gate CMOS process Melodies are selected in serial or binary parallel mode up to a maximum of 16 melody blocks There are 4 sound generators incorporated to produce 4 kinds of output tone controlled by 16 tone data making these ICs ideal for mechanical clocks and similar applications where high tone quality output is demanded FEATURES m Basic Functions e 4 0 MHz oscillator frequency e Power save function Oscillator stopped when no output SO to S3 MODE LH pull up resistors open e BTL or A class outputs Chattering prevention circuit STN STOP SO to 3 e 10 bit D A converter m Sound Generator Functions e DWS dual wave synthesis sound generators e 4 simultaneous sounds for 4 tones e G2 to F 7 note range e 16 tone programmable m Melody Functions e Up to 16 programmable melodies singly or in medleys 1024 step length notes rests jumps end codes Level hold one shot melody modes Serial binary parallel select modes e 4 8 to 605 6 tempo range in 127 steps e 12 rhythm values 3 3 3 3 DAD ale DP dd ad dao e Ties and slurs programmable Control Signal Outputs e BUSYN signal LOW during melody output e CT signal output for external control 2 4 to 5 5 V supply voltage Package e 24 pin SSOP SM1350xxx m Molybdenum gate CMOS SM1
3. 30 pF Clock frequency fyti 3 8 4 0 4 2 MHz Clock duty cycle Ryti 40 50 60 S0 to S3 MODE LH STOP STN ICN HIGH level input voltage Vi Mop G8 Vop y S0 to S3 MODE LH STOP STN ICN LOW level input voltage Vie Vss 7 Vss 0 3 y S0 to S3 MODE LH STOP STN ICN i _ HIGH level input current IH ViH Vop k ey pA S0 to S3 MODE LH STOP STN ICN E LOW level input current I VL Vss 7 10 at HA BUSYN CT TO HIGH level output current p lout Vout Vpp 0 7 2 0 i mA BUSYN CT TO LOW level output current lout Voi1 Vgg 0 7 2 0 mA MSB MSBN HIGH level output current lone Vone Vpp 0 7 3 0 mA MSB MSBN LOW level output current love Voto Vsg 0 7 3 0 E E mA SP SPN output current lous Vou3 Vsg 0 7 4 0 mA 1 Supply voltage ratings shown are with oscillator running and all functions operating normally 2 Clock frequency and duty cycle are ratings for the clock input on pin XT 3 Output current when 20 kQ volume control resistor is connected to VOL and all D A converter bits ON measured using the circuit of the next page Vpp 5 V Ty 25 C Vss 0 V fo 4 0 MHz Rating Parameter Symbol Condition Unit min typ max Minimum operating supply voltage VMIN 2 4 V Maximum operating supply voltage VMAX 5 5 V Standby current consumption lsTBY No melody output 1 0 yA BUSYN CT TO SP SPN Operating current consumption lbp MSB
4. MSBN all open 9 5 mA XT external capacitance Ce 30 pF XTN external capacitance Cp 30 pF Clock frequency fyti 3 8 4 0 4 2 MHz Clock duty cycle Ryti 40 50 60 S0 to S3 MODE LH STOP STN ICN HIGH level input voltage Via ope 23 Vop y S0 to S3 MODE LH STOP STN ICN F LOW level input voltage Vi Vss Vss 03 y S0 to S3 MODE LH STOP STN ICN _ HIGH level input current IH Vin Vp 4 59 pA NIPPON PRECISION CIRCUITS 5 M1350 series Rating Parameter Symbol Condition Unit min typ max S0 to S3 MODE LH STOP STN ICN Z n LOW level input current I VL Vss 30 39 pA BUSYN CT TO HIGH level output current p lout Vout Vpp 0 7 2 0 mA BUSYN CT TO LOW level output current lou Voi Vgg 0 7 2 0 7 mA MSB MSBN HIGH level output current lone Vone Vpp 0 7 3 0 a mA MSB MSBN LOW level output current love Voto Vsg 0 7 3 0 a mA SP SPN output current lous Vong Vsg 0 7 77 mA 1 Supply voltage ratings shown are with oscillator running and all functions operating normally 2 Clock frequency and duty cycle are ratings for the clock input on pin XT 3 Output current when 20 kQ volume control resistor is connected to VOL and all D A converter bits ON measured using the following circuit VDD _ SP SPN A Voo VOL oe 0 7v 20kQ AC
5. 350 series High Tone Quality Melody LSI PINOUT ToP VIEW VDD O1 24 XT SO QO LIXTN S1 LITO s2 ee HT3N O 53 z U MT 2N MODE wo ITIN LH Sz N JM SBN stTOP o OMSB STN O LJ SP BU SYN O LJ SPN CTO LIVOL ICN O12 13 VSS PACKAGE DIMENSIONS 24 pin SSOP Unit mm FLELELALALELEL ELE EL ALE a JE O alr 10 05 20 20 pasts 10 20 0 30 ia an al Wi 8 A ull m oe LL oh A Pw Vig 3 3 0 50 0 20 A ORDERING INFOMATION Device Package SM1350 xxxM 24pin SSOP NIPPON PRECISION CIRCUITS 1 M1350 series BLOCK DIAGRAM S3 S2 Wave ROM S1 T SP S Arithmetic block Circuit E SE DAC a SPN Parameter RO M MODE TOEA LH nput Circui n Lyon STOP A ey STN t 4 se TO a TIN M SBN T2N Control Circuit BUSYN T3N CT t wicn XT VDD Oscillator ScoreROM XTN T VSS NIPPON PRECISION CIRCUITS 2 M1350 series PIN DESCRIPTION Number Name 0 State Description 1 VDD a Supply pin 2 So SU 3 Si SU Binary select mode Phrase select pins 4 s2 su Serial select mode SO and S1 control melody output 5 3 SU 6 MODE SU Melody sele
6. Characteristics Vpp 3 or 5 V T 25 C Vgg O V Rating Parameter Symbol Condition Unit min typ max Initialization clear time ticw 1 0 usec STN pulsewidth tstw Pre input option selected 81 9 oy msec Oscillator start up time tyst 7 7 500 usec Oscillator stop time XEN 180 2 7 196 7 msec D A converter rise delay time toast 81 9 msec D A converter fall delay time tpaeN 180 2 196 7 msec STN STOP standby chattering time tout 81 9 msec STN STOP oscillator chattering time tone Oscillator running 65 5 od 82 0 msec S0 to S3 melody select chattering time tcH3 65 5 7 131 1 msec MODE LH read timing tur 15 9 usec S0 to S3 read timing tgp 31 9 usec BUSYN fall delay time tgysT E 8 2 msec BUSYN rise delay time BYEN 8 2 msec Melody start delay time tpyst 16 4 msec STOP pulsewidth tstpwi Pre input option selected 81 9 E msec ENDN delay time tepst A class output option 7 8 2 msec ENDN pulsewidth tepw A class output option 16 0 usec 1 Oscillator start up time time from when STN goes LOW to when TO goes HIGH 25 0 us 2 The time taken for fast damping to reduce the envelope to 0 level NIPPON PRECISION CIRCUITS 6 M1350 series FUNCTIONAL DESCRIPTION Chattering Prevention STN STOP chattering prevention function Standby Mode The oscillator starts when STN goes from HIGH to melody data output starts 81 9 ms after the oscillator LOW in standby mode Input data is rec
7. aining musical score data and parameter ROM containing envelope and jump data NIPPON PRECISION CIRCUITS 15 SM1350 series Melodies Number of melodies The maximum number of program melodies is 16 Note that is the jump function is used to change the tone or tempo during melody output then the maximum number of melodies reduces by the number of times the jump function was invoked Number of program steps The maximum number of program steps that can be stored in score ROM notes rests jump codes and end codes is 1024 Tempo The basic quarter note tempo can be set in the range 4 8 to 605 6 in multiples of 4 8 Note rest rhythm values There are 12 note rhythm values and 13 rest rhythm values that can be used to construct a melody Also 2 or more notes can be combined using ties or slurs Table 2 Rhythm values Symbol Note Rest O7 1 2 3 4 5 6 7 8 9 A BIC e w S ew ao w e gs E e 3 3 PN A EE Symbol w w w w w Rest NIPPON PRECISION CIRCUITS 16 M1350 series TIMING DIAGRAMS Refer to AC CHARACTERISTICS One shot Melody Mode txst OSC i tur MODE ti N Y a gt tsz ee S0 to 3 t al _ _ S BUSYN p a teyst MELODY p toast OUTPUT 7 a AN Figure 17 One shot mode standby to melody start Aa gt S0 to S3 al t
8. ct mode control Binary mode when LOW and serial mode when HIGH 7 LH SU Melody output mode control One shot when LOW and level hold when HIGH 8 STOP UO terpa acini 9 STN U or O Melody start control 10 BUSYN 0 C Busy output signal LOW when a melody is output 11 CT 0 C External control pulse output 12 ICN U Initialization clear input 13 VSS Ground pin 14 VOL Volume adjust control Volume adjusted using an external resistor TETU oe 16 SP o P BTL output mode 9 bit D A converter output A class output mode 10 bit D A converter output 3 usi 0 0 BTL output mode Signed bit output HIGH when no melody is output U A class output mode BUSYIN input BTL output mode Signed bit output HIGH when no melody is output 19 MSN 2 C A class output mode ENDN output HIGH when no melody is output 19 TIN U 20 T2N U Test signal inputs 21 T3N U 22 TO 0 C Test signal output 62 5 kHz output when not in test mode 23 XTN 0 Oscillator output 24 XT Oscillator input 1 U pull up resistor connection SU pull up resistor connection only when melody output starts P p channel open drain C complementary output U or O pull up resistance or open drain master slice 2 BTL A class output mode is selected by mask option NIPPON PRECISION CIRCUITS 3 M1350 series SPECIFICATIONS Absolute Maximum Ratings Vss 0V Parameter Symbol Cond
9. eived and starts if STN is LOW Internal Clock p 81 9ms m Input Reception Melody Output Note Refer to the TIMING DIAGRAMS section to confirm melody timing specifics Figure 1 STN STOP chattering prevention timing standby mode Oscillator starts running After the oscillator starts running input data is last changed state Input data is considered invalid considered valid 81 9 ms after STN and STOP have for intervals less than 65 5 ms e ULL i i al STN or il Po STOP Input Reception Note Refer to the TIMING DIAGRAMS section to confirm melody timing specifics Figure 2 STN STOP chattering prevention timing oscillator running NIPPON PRECISION CIRCUITS 7 M1350 series S0 to S3 chattering prevention function In binary select mode SO to S3 are sampled in sync with the 15 26 Hz clock during level hold melody output The chatter prevention function compares the data sampled 65 5 ms after a data transition on SO to S3 with the data sampled 65 5 ms before the data transition If the 2 data samples are the same then the data transition is considered invalid However if they are the not the same indicating a true transition has occurred melody output stops and only restarts again after 2 consecutive identical melody select data samples occur Note that except for the Select change retrigger No maste
10. er to the TIMING DIAGRAMS section to confirm melody timing specifics Figure 9 One shot mode serial select NIPPON PRECISION CIRCUITS 11 M1350 series Level hold melody output LH HIGH STN M dody N Output Note Refer to the TIMING DIAGRAMS section to confirm melody timing specifics Figure 10 Level hold mode serial select S0 S1 melody output control The melody selection in serial mode is controlled by SO and S1 as shown in the following table When S1 is HIGH SO switches to a pull up input configuration The states of SO and S1 are read in immediately after start up and does not change during melody output Table 1 S0 S1 resistor and melody counter 0 1 Melody counter LOW x Increments when melody output stops HIGH LOW No increment HIGH HIGH Increments when melody output starts S1 S0 OOd ae e Xoe e loo van j z iii Note Refer to the TIMING DIAGRAMS section to confirm melody timing specifics Figure 11 S0 S1 melody output control timing NIPPON PRECISION CIRCUITS 12 M1350 series One shot mode repeat function In one shot melody mode the output repeats the same melody while STN is LOW When STN goes STN HIGH the output continues until the end of the currently playing melody and then stops M dody Output ml Note Refer to the TIMING DIAGRAMS section to confi
11. ition Rating Unit Supply voltage Vop 0 3 to 7 0 V Input voltage Vin Vgs 0 3 to Vpp 0 3 V Storage temperature Tstg 40 to 125 C Power dissipation Pp 650 mW Soldering temperature Taid 255 C Soldering time tid 10 s Recommended Operating Conditions Vss 0V Rating Parameter Symbol Condition Unit min typ max Supply voltage Vpp 2 4 7 5 5 V Operating temperature Topr 20 80 C Master slice Specifications Function Selected condition Serial mode melody selections 1 to 16 Melody output circuit BTL A class Level hold melody select change retrigger Yes No STN U O Pull up pull down resistance STOP U O Underlined entries are the default standard options Throughout this datasheet the standard options are assumed unless otherwise specified U pull up resistance O open input NIPPON PRECISION CIRCUITS 4 M1350 series DC Characteristics Vpp 3 V T 25 C Vss 0 V fo 4 0 MHz Rating Parameter Symbol Condition Unit min typ max Minimum operating supply voltage VMIN 2 4 V Maximum operating supply voltage VMAX 5 5 7 7 V Standby current consumption lsTBY No melody output z 1 0 yA BUSYN CT TO SP SPN z Operating current consumption Ibp MSB MSBN all open 3 5 mA XT external capacitance Ce 30 pF XTN external capacitance Cp A
12. r slice option and binary select mode with level hold output the SO to S3 chattering prevention circuit is disabled Y Y Y Y Y Y Sotos3 aN X an Y m YY YY 5 M dody d Output aN 4M S 65 5 65 5 65 5 65 5 65 5 65 5 ms ms ms ms ms a e a a lt _ lt Note Refer to the TIMING DIAGRAMS section to confirm melody timing specifics Figure 3 SO to S3 chattering prevention timing Initialization When power on and ICN goes LOW all pins and internal states are initialized to the states shown below ICN initialization has priority over all other inputs m Output pins SP SPN Open MSB MSBN VDD e CT Vss e BUSYN VDD m Serial melody counter Reset to first melody SO to S3 all 1 m Oscillator circuit Stopped NIPPON PRECISION CIRCUITS 8 SM1350 series Melody Output Circuit The volume control circuit comprises a P channel current summing D A converter a built in constant current source and an external variable resistor The circuit is set for either BTL output or A class output by master slice option BTLoutput The BTL output comprises a pair of 9 bit D A converters and 4 external transistors 2 x NPN 2 x PNP to drive a speaker VDD VDD sp M SBN mC SPEAKER K H VSS VOL SPN VSS Figure 4 BTL output circuit A class output circuit The A cla
13. ratus which influence human lives due to the failure or malfunction of the products Customers are requested to comply with applicable laws and regulations in effect now and hereinafter including compliance with export controls on the distribution or dissemination of the products Customers shall not export directly or indirectly any products without first obtaining required licenses and approvals from appropriate government agencies NIPPON PRECISION CIRCUITS INC 4 3 2 chome Fukuzumi Koto ku Tokyo 135 8430 Japan NIPPON PRECISION CIRCUITS INC Telephone 03 3642 6661 Facsimile 03 3642 6698 NC9611BE 1998 10 NIPPON PRECISION CIRCUITS 21
14. rm melody timing specifics Figure 12 One shot melody repeat timing One shot mode perpetual repeat function If the score ROM end code is set to the jump code the melody will continue to play continuously once one shot mode starts STOP pin One shot output mode stops when STOP goes from HIGH to LOW The STOP input is ignored in level hold output mode and is also ignored in one shot CT pin A pulse in sync with selected notes or rests is output on CT There are 2 modes for the output pulses pulse mode and hold mode mode when STN is LOW Note that even when STOP is LOW STN has higher priority In pulse mode a 16 4 ms pulse is output when a note or rest occurs for which the corresponding CT data in score ROM is set to 1 Pulse mode CT DATA 1 1 0 1 0 CT 16 4msec Figure 13 CT pulse mode output Hold mode In hold mode the output pulse inverts when a note or rest occurs for which the corresponding CT data in score ROM is set to 1 The output goes LOW after CT DATA 1 CT the start of a melody and when jumping to the leading note of a melody Figure 14 CT hold mode output NIPPON PRECISION CIRCUITS 13 M1350 series Fast Damping When melody output stops the D A converter output Also when one shot melody output mode is retrig amplitude does not fall to zero instantaneously gered melody output restarts after the fast damping instead the outp
15. ss output circuit comprises a single 10 bit D A converter with current output on SP The D A converter MSB is set ON immediately after the oscillator starts and the current output that results is the center point above and below which the converter current output varies in response to the waveform amplitude The SP output is current to voltage converted for connection to audio equipment or amplifiers In A class output mode the 4 sound generator waveforms are time multiplexed so an integrating circuit must be connected between SP and the amplifier to recover the signal VoD VDD BU SYN AMP SPEAKER J VSS VOL i 1 NW 4 Vss Note Refer to the TIMING DIAGRAMS section to confirm melody timing specifics Figure 5 A class output circuit NIPPON PRECISION CIRCUITS 9 SM1350 series Pin Functions Binary select mode MODE LOW A melody 1 to 16 is selected according to the condition H or L of each 4 terminals SO to S3 N Oo Melody 1st melody Nn w Dn N n Nn Melody 9th melody 10th melody 11th melody 12th melody 13th melody 14th melody 15th melody 16th melody 2nd melody 3rd melody 4th melody Sth melody 6th melody 7th melody 8th melody re fret fret pet re pel pel rel S He edd 4 Toyo oo cycle Be et ee ee ee rye yee oy oes Rr a ae rep ie roy ayo oye e H VDD le
16. t tst tenz toea dody o a Output nm i oven t BUSYN aa i teow ENON t t t ttost Figure 18 One shot mode retrigger to melody stop NIPPON PRECISION CIRCUITS 17 M1350 series Level Hold Melody Mode 1 master slice option Change select retrigger Yes ticw ICN t STN 2 best OSC bur MODE n gt Hw eN te 0 to 3 _ __ ar r BU SYN YST M elody Le y boast gt O utput p a Er lt E Figure 19 Level hold mode standby to melody start STN D S S S S tcn3 tcn baen E S S S SP toven 2 BUSYN aes m DST w e r G Figure 20 Level hold mode retrigger to melody stop ENDN NIPPON PRECISION CIRCUITS 18 M1350 series Level Hold Melody Mode 2 master slice option Change select retrigger No STN txst OSC tur MODE a Pe Ba F LH tsr S0 to 3 ce ron BUSYN YST tryst toast i M elody a gt AN O utput so A Figure 21 Level hold mode standby to melody start STN C C S0 to S3 a_l bii M elody 2 Output A t teven BUSYN i arn C teow teow ENDN ram is osc B i 1 Figure 22 Level hold mode repeating melody to melody stop NIPPON PRECISION CIRCUITS 19 M1350 series
17. ut converges to zero within a maxi interval mum of 8 2 ms to prevent noise being generated STOP M dody Output 8 2msec max lt a T Note Refer to the TIMING DIAGRAMS section to confirm melody timing specifics Figure 15 Fast damping timing NIPPON PRECISION CIRCUITS 14 M1350 series Sound Generator Synthesis mthod The sound generators use the dual wave synthesis DWS method The DWS method uses the envelope of 2 waveforms main waveform and sub waveform to synthesize the generated tone Using this method makes possible high tone quality output that faithfully reproduces the tones of real musical instruments M ain Wave Envelope Generated Sound Synth esi ze gt 7 Sub Wave ae Figure 16 Number of simultaneous sounds The maximum number of tones that can be generated simultaneously is 4 making 4 part harmony harmony Generation possible where each tone is derived from corresponding main and sub waveforms Sound range The range of sounds covers 5 octaves from note G2 to F 7 Waveform ROM Waveforms are stored in a 10 bit x 128 word x 8 waveform capacity waveform ROM Number of programmable tones The maximum number of programmable tones is 16 Note that 2 similar tones which have different envelope settings are considered to be separate tones Built in ROMs The built in ROMs comprise 3 types of ROM waveform ROM containing waveform data score ROM cont
18. vel L Vss level Note Don t select any address with no melody recorded One shot melody output LH LOW STN E f M elody Output N X M Note Refer to the TIMING DIAGRAMS section to confirm melody timing specifics Figure 6 One shot mode binary select NIPPON PRECISION CIRCUITS 10 M1350 series Level hold melody output LH HIGH STN sowss N gt M elody Output Note Refer to the TIMING DIAGRAMS section to confirm melody timing specifics Figure 7 Level hold mode binary select with Select change retrigger No mask option If the Select change retrigger Yes mask option is leading note when any of the SO to S3 inputs changes selected a new melody starts playing from the state STN S0 to S3 M elody 4 Output aN x m Note Refer to the TIMING DIAGRAMS section to confirm melody timing specifics Figure 8 Level hold mode binary select with Select change retrigger Yes mask option Serial select mode MODE HIGH In serial select mode the next melody is selected by master slice option Note that when melody output is cycling through the melodies in the order N gt stopped using the STOP input the melody select N 1 N 1 N when the STN input goes counter increments LOW The number of melodies in the cycle is set by One shot melody output LH LOW STN oink A AH Ar Note Ref
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