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 ORDERING INFORMATION 8 VSS 2 7 VDD SC 3 6 MTO ST 4 5 TEST PACKAGE DIMENSIONS (Unit: mm) Device Package SM1125ABV 8-pin VSOP 0.5 ± 0.2 ■ ■ 1 SI 4.4 ± 0.2 ■ OSC 6.4 ± 0.3 ■ (Top view) 0.575 TYP + 0.1 0.15 − 0.05 3.1 ± 0.3 1.15 ± 0.05 ■ 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 0.65 0.10 0.22 ± 0.1 0.1 ± 0.05 ■ ■ PINOUT + 0.12 M SEIKO NPC CORPORATION —1 SM1125ABV BLOCK DIAGRAM VSS OSC SW2 1/2 or 1/4 OSC VDD Scale Counter Divider 1/128 SI Scale ROM Control Circuit SC MTO TEST Main ROM ST MultiPlexer Tempo Latch Tempo Counter Rhythm Counter Address Counter Start Address Latch PIN DESCRIPTION Number Name I/O Function 1 OSC I External resistor and capacitor connection pins 2 SI I Playback control serial interface data input 3 SC I Playback control serial interface clock input 4 ST I Playback start/stop control signal input 5 TEST I Test input pin. Leave open or tie to VSS. (pull-down resistance built-in) 6 MTO O Playback melody signal output 7 VDD – Supply pin (+) 8 VSS – Ground pin SEIKO NPC CORPORATION —2 SM1125ABV SPECIFICATIONS Absolute Maximum Ratings Parameter Rating Unit VDD − VSS − 0.3 to 5.0 V Input voltage range VIN VSS − 0.2 to VDD + 0.2 V Power dissipation PD 100 mW Storage temperature range Tstg − 40 to 125 °C Rating Unit Supply voltage range Symbol Condition Recommended Operating Conditions VSS = 0V Parameter Symbol Condition Supply voltage VDD 2.0 to 3.6 V Operating temperature Topr −20 to 70 °C DC Characteristics Unless otherwise noted Ta = −20 to 70°C, VSS = 0V, VDD = 2.0 to 3.6V Rating Parameter Symbol Condition Unit min typ max 2.0 3.0 3.6 V Supply voltage VDD Current consumption (1) IDD1 Non-playback mode, Ta = 25°C – – 0.5 µA Current consumption (2) IDD2 Playback mode, MTO pin open – 215 600 µA VDD − 0.2 – VDD V VSS – VSS + 0.2 V Input voltage VIH ST, SI, SC pins VIL IIH1 ST, SI, SC pins, VIH = VDD, Ta = 25°C – – 0.5 µA IIL1 ST, SI, SC pins, VIL = 0 V, Ta = 25°C – – 0.5 µA IIH2 TEST pin, VIH = VDD – – 200 µA VOPN TEST pin – – 0.1 V VOH MTO pin, IOH = 1mA VDD − 0.4 – VDD V VOL MTO pin, IOL = 1mA VSS – VSS + 0.4 V Oscillator frequency fOSC NPC test board measurement, RO = 91kΩ, CO = 200pF, VDD = 2.0 to 3.6V 34.5 38.4 42.5 kHz Frequency stability ∆f/f – 0.1 – %/0.1V Oscillator start voltage VDOB – – 1.6 V Oscillator stop voltage VDOS – – 1.6 V Input current (1) Input current (2) Open voltage Output voltage SEIKO NPC CORPORATION —3 SM1125ABV AC Characteristics Unless otherwise noted Ta = −20 to 70°C, VSS = 0V, VDD = 2.0 to 3.6V Rating Parameter Symbol Condition Unit min typ max tSC 5.0 – – µs SC HIGH-level pulsewidth tSWH 2.0 – – µs SC LOW-level pulsewidth tSWL 2.0 – – µs SC pulse cycle “SC input pulse” timing SC pulse rise time tSr – – 200 ns SC pulse fall time tSf – – 200 ns SI-SC setup time tDS 2.0 – – µs SI-SC hold time tDH 2.0 – – µs “SC-SI serial input pulse” timing SC input pulse VIH 0.5VDD VIL 0.9VDD 0.1VDD t SWH t SWL t Sf t SC t Sr SC-SI serial input pulse VIH 0.5VDD VIL SC t DS SI 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 SI Valid Data Invalid Data ? ? ? ? ? ? B3 B2 B1 B0 SC ST MTO 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 B2 B1 B0 ST Melody B3 B2 B1 B0 ST Melody L L L L L→H 1st melody L H H L L→H 7th melody L L L H L→H 2nd melody L H H H L→H 8th melody L L H L L→H 3rd melody H L L L L→H 9th melody L L H H L→H 4th melody H L L H L→H 10th melody L H L L L→H 5th melody H L H L L→H 11th melody L H L H L→H 6th melody H L H H L→H 12th melody SI #n1 Data #n2 Data SC ST MTO #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. Valid Data Invalid Data SI MSB LSB SC ST 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 B+ 2.0 to 3.6V RO 91kΩ OSC CONTROLLER CO VSS SI VDD SC MTO ST 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 CO Switch 91kΩ SM1125ABV OSC VSS SI VDD SC MTO ST TEST Frequency Counter 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 For products intended solely for sale within Japan, please contact our company about copyright permission. 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. SM1125ABV Number Song Title Composer Time [s] 1 Departure Komuro Tetsuya 8.46 2 Mirai yosouzu II Yoshida Miwa 19.4 3 Roman hikou Komekome club 13.68 4 Namonaki uta Sakurai Kazutoshi 21.03 5 Last Christmas Michael George 18.14 6 We wish you a merry Christmas – 9.78 7 Jingle Bells – 15.56 8 Happy Birthday to you Hill Mildred Junius Welch/Hill Patty Smith 12.17 9 Green Sleeves – 17.63 10 Jesu joy of mans desiring – 20.18 11 Mickey Mouse March Dodd Jimmie 5.89 12 It’s a small world Sherman Richard M/Sherman Robert B 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 1-9-9, Hatchobori, Chuo-ku, Tokyo 104-0032, Japan Telephone: +81-3-5541-6501 Facsimile: +81-3-5541-6510 http://www.npc.co.jp/ Email: [email protected] ND13009-E-00 2013.03 SEIKO NPC CORPORATION —9