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| SM1125ABV Multimelody IC for Pagers OVERVIEW The SM1125ABV is melody IC fabricated in NPC's Molybdenum-gate CMOS for use in mobile telecommunications equipment. FEATURES I I I PINOUT (Top view) I I I I 12 melodies selectable Level hold playback mode Built-in oscillator circuit * Oscillator frequency: 38.4kHz 2-pin serial data melody selection and 1-pin melody playback control Power save function * Oscillator stopped in no-play modes Molybdenum-gate CMOS process 8-pin plastic VSOP package OSC SI SC ST 1 2 3 4 8 7 6 5 VSS VDD MTO TEST ORDERING INFORMATION Device SM1125ABV Package 8-pin VSOP PACKAGE DIMENSIONS (Unit: mm) 4.4 0.2 6.4 0.3 0.575 TYP 3.1 0.3 1.15 0.05 0.15 - 0.05 + 0.1 0.65 0.10 0.22 0.1 0.1 0.05 + 0.12 M SEIKO NPC CORPORATION --1 0.5 0.2 SM1125ABV BLOCK DIAGRAM VSS OSC OSC 1/2 or 1/4 SW2 VDD Divider 1/128 Scale Counter MTO SI SC ST Control Circuit Scale ROM Main ROM TEST Tempo Latch Rhythm Counter MultiPlexer Tempo Counter Address Counter Start Address Latch PIN DESCRIPTION Number 1 2 3 4 5 6 7 8 Name OSC SI SC ST TEST MTO VDD VSS I/O I I I I I O - - Function External resistor and capacitor connection pins Playback control serial interface data input Playback control serial interface clock input Playback start/stop control signal input Test input pin. Leave open or tie to VSS. (pull-down resistance built-in) Playback melody signal output Supply pin (+) Ground pin SEIKO NPC CORPORATION --2 SM1125ABV SPECIFICATIONS Absolute Maximum Ratings Parameter Supply voltage range Input voltage range Power dissipation Storage temperature range Symbol VDD - VSS VIN PD Tstg Condition Rating - 0.3 to 5.0 VSS - 0.2 to VDD + 0.2 100 - 40 to 125 Unit V V mW C Recommended Operating Conditions VSS = 0V Parameter Supply voltage Operating temperature Symbol VDD Topr Condition Rating 2.0 to 3.6 -20 to 70 Unit V C DC Characteristics Unless otherwise noted Ta = -20 to 70C, VSS = 0V, VDD = 2.0 to 3.6V Rating Parameter Supply voltage Current consumption (1) Current consumption (2) Input voltage Symbol VDD IDD1 IDD2 VIH VIL Input current (1) Input current (2) Open voltage Output voltage IIH1 IIL1 IIH2 VOPN VOH VOL Oscillator frequency Frequency stability Oscillator start voltage Oscillator stop voltage fOSC f/f VDOB VDOS ST, SI, SC pins, VIH = VDD, Ta = 25C ST, SI, SC pins, VIL = 0 V, Ta = 25C TEST pin, VIH = VDD TEST pin MTO pin, IOH = 1mA MTO pin, IOL = 1mA NPC test board measurement, RO = 91k, CO = 200pF, VDD = 2.0 to 3.6V Non-playback mode, Ta = 25C Playback mode, MTO pin open ST, SI, SC pins Condition min 2.0 - - VDD - 0.2 VSS - - - - VDD - 0.4 VSS 34.5 - - - typ 3.0 - 215 - - - - - - - - 38.4 0.1 - - max 3.6 0.5 600 VDD VSS + 0.2 0.5 0.5 200 0.1 VDD VSS + 0.4 42.5 - 1.6 1.6 V A A V V A A A V V V kHz %/0.1V V V Unit SEIKO NPC CORPORATION --3 SM1125ABV AC Characteristics Unless otherwise noted Ta = -20 to 70C, VSS = 0V, VDD = 2.0 to 3.6V Rating Parameter SC pulse cycle SC HIGH-level pulsewidth SC LOW-level pulsewidth SC pulse rise time SC pulse fall time SI-SC setup time SI-SC hold time Symbol tSC tSWH tSWL tSr tSf tDS tDH "SC-SI serial input pulse" timing "SC input pulse" timing Condition min 5.0 2.0 2.0 - - 2.0 2.0 typ - - - - - - - max - - - 200 200 - - s s s ns ns s s Unit SC input pulse VIH 0.5VDD VIL tSr 0.9VDD 0.1VDD t SWH t SC t SWL tSf SC-SI serial input pulse VIH 0.5VDD VIL t DS SI SC t DH VIH 0.5VDD VIL SEIKO NPC CORPORATION --4 SM1125ABV FUNCTIONAL DESCRIPTION Control Functions Reference clock SM1125ABV has built-in RC oscillator circuit (oscillation frequency: 38.4kHz typ). Power-saving function The built-in RC oscillator is stopped when not in playback mode (when ST is LOW), preventing unwanted current flow. ST OSC RC Oscillator Figure 1. Oscillator circuit operation Playback control The ST pin controls the start of playback. While ST is HIGH, the melody is played repeatedly, and when ST goes LOW, playback stops. Melodies are selected by input serial data on pins SI and SC, as shown in table 1. The final 4 serial data bits in any input data string form the valid selection data, and this data is retained even after playback. If serial data is input during playback, the data is ignored and playback continues. Invalid Data Valid Data Invalid Data SI SC ST MTO ? ? B3 B2 B1 B0 ???? Pin SC should be LOW when either a LOW-to-HIGH or HIGH-to-LOW transition occurs on pin ST. Figure 2. Serial data input timing Serial data selection Table 1. Serial data melody select B3 L L L L L L B2 L L L L H H B1 L L H H L L B0 L H L H L H ST LH LH LH LH LH LH Melody 1st melody 2nd melody 3rd melody 4th melody 5th melody 6th melody B3 L L H H H H B2 H H L L L L B1 H H L L H H B0 L H L H L H ST LH LH LH LH LH LH Melody 7th melody 8th melody 9th melody 10th melody 11th melody 12th melody SI SC ST MTO #n1 Data #n2 Data #n1 Play #n1 Play #n1 Play #n2 Play Melody plays repeatedly when ST is HIGH, and stops immediately when ST goes LOW. Figure 3. Melody repetition timing SEIKO NPC CORPORATION --5 SM1125ABV Playback timing diagrams Playback start Playback starts 128 1 OSC clock cycles after ST goes HIGH. Invalid Data SI SC ST Valid Data MSB LSB 128 1 Clock *Internal Clock MTO ;;;;;; ;;;;;; ;;;;;; Figure 4. Start timing Playback stop Playback stops immediately and the oscillator also stops when ST goes LOW. ST *Internal Clock MTO ;;;;;;;;;;;;;;;;; ;;;;;;;;;;;;;;;;; Figure 5. Stop timing SEIKO NPC CORPORATION --6 SM1125ABV TYPICAL APPLICATION 2.0 to 3.6V B+ RO 91k OSC CONTROLLER VSS VDD SI SC ST CO MTO TEST 200pF OSCILLATOR FREQUENCY MEASUREMENT The measurement circuit below shows a SM1125ABV with built-in RC oscillator circuit and external RC oscillator components capacitor CO and resistor RO. When ST is switched to VDD, the oscillator starts and outputs a pulse on MTO. The output pulse is counted using a frequency counter. RO 91k SM1125ABV OSC VSS VDD CO SI SC MTO TEST Frequency Counter Switch ST Note that the board mounting and wiring will marginally affect the output frequency, even for equivalent values for RO and CO. SEIKO NPC CORPORATION --7 SM1125ABV SONG LIST NPC performs all actions required by the copyright guidelines and rules laid down by the Japanese Society for Rights of Authors, Composers and Publishers (JASRAC). Accordingly, for products intended solely for sale within Japan, copyright permission is not required when submitting an order request, except in special circumstances. For products intended for sale outside of Japan, it is the responsibility of the customer to obtain permission to use a melody by following all relevant copyright rules and regulations for the countries concerned. NPC does not undertake the copyright permission process for overseas countries. SM1125ABV Number 1 2 3 4 5 6 7 8 9 10 11 12 Departure Mirai yosouzu II Roman hikou Namonaki uta Last Christmas We wish you a merry Christmas Jingle Bells Happy Birthday to you Green Sleeves Jesu joy of mans desiring Mickey Mouse March Its a small world Song Title Komuro Tetsuya Yoshida Miwa Komekome club Sakurai Kazutoshi Michael George - - Hill Mildred Junius Welch/Hill Patty Smith - - Dodd Jimmie Sherman Richard M/Sherman Robert B Composer Time [s] 8.46 19.4 13.68 21.03 18.14 9.78 15.56 12.17 17.63 20.18 5.89 12.99 Note. The copyrights of music described in this list have been the public domain or being managed by JASRAC in Japan. SEIKO NPC CORPORATION --8 SM1125ABV Please pay your attention to the following points at time of using the products shown in this document. The products shown in this document (hereinafter "Products") are not intended to be used for the apparatus that exerts harmful influence on human lives due to the defects, failure or malfunction of the Products. Customers are requested to obtain prior written agreement for such use from SEIKO NPC CORPORATION (hereinafter "NPC"). Customers shall be solely responsible for, and indemnify and hold NPC free and harmless from, any and all claims, damages, losses, expenses or lawsuits, due to such use without such agreement. NPC reserves the right to change the specifications of the Products in order to improve the characteristic or reliability thereof. NPC makes no claim or warranty that the contents described in this document dose not infringe any intellectual property right or other similar right owned by third parties. Therefore, NPC shall not be responsible for such problems, even if the use is in accordance with the descriptions provided in this document. Any descriptions including applications, circuits, and the parameters of the Products in this document are for reference to use the Products, and shall not be guaranteed free from defect, inapplicability to the design for the mass-production products without further testing or modification. Customers are requested not to export or re-export, directly or indirectly, the Products to any country or any entity not in compliance with or in violation of the national export administration laws, treaties, orders and regulations. Customers are requested appropriately take steps to obtain required permissions or approvals from appropriate government agencies. SEIKO NPC CORPORATION 15-6, Nihombashi-kabutocho, Chuo-ku, Tokyo 103-0026, Japan Telephone: +81-3-6667-6601 Facsimile: +81-3-6667-6611 http://www.npc.co.jp/ Email: sales@npc.co.jp NC0720AE 2008.08 SEIKO NPC CORPORATION --9 |
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