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SM1125 series
NIPPON PRECISION CIRCUITS INC.
Multimelody IC for Pagers
OVERVIEW
The SM1125 series are melody ICs fabricated in NPC's Molybdenum-gate CMOS for use in mobile telecommunications equipment. A maximum of 16 melodies can be stored in programmable ROM.
PINOUT (Top View)
8-pin VSOP
OSC SI SC ST 1 2 3 4 8 7 VSS VDD MTO TEST
FEATURES
s
1125xx
6 5
s s
s
s
s
s s
Maximum of 16 melody selections (with up to 512 steps) Level hold playback mode External reference clock input versions and builtin RC oscillator versions available, set by masterslice option (RC oscillator versions require an external resistor and capacitor). 12 selectable clock frequencies (fixed for all melodies) * External clock input versions (12 frequencies) - 32.768 kHz system: 32.768, 65.536 and 131.072 kHz - 37.5 kHz system: 37.5, 75.0 and 150.0 kHz - 38.4 kHz system: 38.4, 76.8 and 153.6 kHz - 48.0 kHz system: 48.0, 96.0 and 192.0 kHz * Built-in oscillator versions (4 frequencies) - 38.4 kHz (standard oscillator frequency) - 32.768 kHz - 37.5 kHz - 48.0 kHz 2-pin serial data melody selection and 1-pin melody playback control Power save function * External clock input versions Clock gating in no-play modes * Built-in RC oscillator versions Oscillator stopped in no-play modes 8-pin plastic VSOP package Molybdenum-gate CMOS process
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
0.10 0.22 0.1
0.1 0.05
0.65
+ 0.12 M
ORDERING INFORMATION
DEVICE SM1125xxV 1 1. xx is version name. PA C K A G E 8pin VSOP
NIPPON PRECISION CIRCUITS--1
0.5 0.2
SM1125 series
BLOCK DIAGRAM
OSC
OSC
master slice SW1 1/2 or 1/4 SW2
VSS VDD
Scale Counter Scale ROM
Gate
Divider 1/128
MTO
SI SC ST Control Circuit
Main ROM
MultiPlexer Rhythm Counter Address Counter Start Address Latch
TEST
(Pull-down resistance built-in)
Tempo Latch
Tempo Counter
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 Built-in RC oscillator option: External resistor and capacitor connection pins External clock input option: External reference clock input (gate circuit built-in) 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
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SM1125 series
SPECIFICATIONS
Absolute Maximum Ratings
P arameter Supply voltage range Input voltage range Power dissipation Storage temperature range Soldering temperature Soldering time Symbol V DD - VSS V IN PD Tstg Tsld tsld Condition Rating - 0.3 to 5.0 V SS - 0.2 to V DD + 0.2 100 - 40 to 125 255 10 Unit V V mW C C s
Recommended Operating Conditions
VSS = 0 V
P arameter Supply voltage Operating temperature Symbol V DD Topr Condition Rating 2.0 to 3.6 -20 to 70 Unit V C
DC Characteristics
Unless otherwise noted Ta = -20 to 70 C, VSS = 0 V, VDD = 1.5 to 3.6 V
Rating P arameter Supply voltage (1) Supply voltage (2) Current consumption (1) Current consumption (2) Current consumption (3) Symbol V DD1 V DD2 IDD1 IDD2 IDD3 V IH V IL IIH1 Input current (1) IIL1 Input current (2) Open voltage Output voltage IIH2 VOPN VOH VOL Oscillator frequency Frequency stability Oscillator start voltage Oscillator stop voltage fOSC f/f VDOB V DOS Condition min External clock input option Built-in RC oscillator option Non-playback mode, Ta = 25C External clock input option: Playback mode, MTO pin open Built-in RC oscillator option: Playback mode, MTO pin open ST, SI, SC and OSC (External clock input option) pins ST, SI, SC and OSC (External clock input option) pins, V IH = V DD, Ta = 25C ST, SI, SC and OSC (External clock input option) pins, V IL = 0 V, Ta = 25C TEST pin, V IH = V DD TEST pin MTO pin, IOH = 1 mA MTO pin, IOL = 1 mA Built-in RC oscillator option: NPC test board measurement, RO = 91 k , CO = 200 pF V DD = 2.0 to 3.6V Built-in RC oscillator option Built-in RC oscillator option Built-in RC oscillator option 1.5 2.0 - - - V DD - 0.2 V SS - - - - V DD - 0.4 V SS 34.5 - - - typ 3.0 3.0 - 25 215 - - - - - - - - 38.4 0.1 - - max 3.6 3.6 0.5 200 600 V DD V SS + 0.2 0.5 0.5 200 0.1 V DD V SS + 0.4 42.5 - 1.6 1.6 V V A A A V V A A A V V V kHz %/0.1V V V Unit
Input voltage
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SM1125 series
AC Characteristics
Unless otherwise noted Ta = -20 to 70 C, VSS = 0 V, VDD = 1.5 to 3.6 V
Rating P arameter OSC pulse cycle OSC HIGH-level pulsewidth OSC LOW-level pulsewidth OSC pulse rise time OSC pulse fall time 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 tOSC tOWH tOWL tOr tOf tSC tSWH tSWL tSr tSf tDS tDH "SC-SI serial input pulse" timing 2.0 - - s "SC input pulse" timing "OSC input pulse (External clock input option)" timing Condition min 5.0 2.0 2.0 - - 5.0 2.0 2.0 - - 2.0 typ - - - - - - - - - - - max - - - 200 200 - - - 200 200 - s s s ns ns s s s ns ns s Unit
OSC input pulse (External clock input option)
0.9VDD 0.1VDD
t OWH t OSC
SC input pulse
t OWL
VIH 0.5VDD VIL t Or
tOf
0.9VDD 0.1VDD
t SWH t SC
SC-SI serial input pulse
t OWL SWL
VIH 0.5VDD VIL t Sr
t Sf
SC
VIH 0.5VDD VIL t DS t DH VIH 0.5VDD VIL
SI
NIPPON PRECISION CIRCUITS--4
SM1125 series
FUNCTIONAL DESCRIPTION
Control Functions
Reference clock SM1125 series devices are available in external clock input versions and built-in RC oscillator versions, set by master-slice option. In the case of the built-in RC oscillator option, an external resistor and capacitor is required for the oscillator function. SM1125 series can operate at 12 selectable reference clock frequencies. All melodies playback at the fixed speed set by the reference clock frequency. External clock input versions operate at one of 12 selectable clock frequencies, as shown in table 1. Built-in RC oscillator versions operate at one of 4 selectable oscillator frequencies--32.768 kHz, 37.5 kHz, 38.4 kHz (standard frequency) and 48.0 kHz.
Table 1. Reference clock frequencies
F r e q u e n cy system 32.768 kHz 37.5 kHz 38.4 kHz 48.0 kHz Selectable frequencies 32.768 kHz 37.5 kHz 38.4 kHz 48.0 kHz 65.536 kHz 75.0 kHz 76.8 kHz 96.0 kHz 131.072 kHz 150.0 kHz 153.6 kHz 192.0 kHz
In external clock input versions, the external reference clock input is used during playback mode only and is otherwise ignored. If a clock signal is input when not in playback mode (when ST is LOW), the gate circuit switches to cutoff the external reference clock signal from entering the device, preventing unwanted current flow. In built-in RC oscillator versions, the oscillator is stopped when not in playback mode (when ST is LOW), preventing unwanted current flow.
ST OSC
Figure 1. External clock input version: Input during playback mode only
ST OSC
Figure 2. External clock input version: Input during non-playback mode
ST OSC RC Oscillator
Figure 3. Built-in RC oscillator version
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SM1125 series 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 2. The final 4 serial data bits in any input data
Invalid Data Valid 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 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 4. Serial data input timing
Serial data selection Table 2. Serial data melody select
B3 L L L L L L L L B2 L L L L H H H H B1 L L H H L L H H B0 L H L H L H L H ST LH LH LH LH LH LH LH LH M e l o dy 1st melody 2nd melody 3rd melody 4th melody 5th melody 6th melody 7th melody 8th melody B3 H H H H H H H H B2 L L L L H H H H B1 L L H H L L H H B0 L H L H L H L H ST LH LH LH LH LH LH LH LH M e l o dy 9th melody 10th melody 11th melody 12th melody 13th melody 14th melody 15th melody 16th 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 5. Melody repetition timing
NIPPON PRECISION CIRCUITS--6
SM1125 series Playback timing diagrams
Playback start
Playback starts 128 1 OSC clock cycles after ST goes HIGH.
Invalid Data SI SC ST OSC 128
Internal Clock
MSB
Valid Data
LSB
1 Clock
MTO
Figure 6. Start timing
Playback stop
,,,,,, ,,,,,, ,,,,,,
Playback stops immediately when ST goes LOW. In external clock input versions, the IC internal clock also stops when ST goes LOW, regardless of whether or not there is a clock input signal on pin OSC.
In built-in RC oscillator versions, the oscillator also stops when ST goes LOW.
ST OSC
Internal Clock
MTO
,,,,,,,,,,,,,,,,, ,,,,,,,,,,,,,,,,, ,,,,,,,,,,,,,,,,,
Figure 7. Stop timing
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SM1125 series
Musical Specifications
Maximum program steps The mask for the built-in ROM can be programmed with up to a maximum of 512 steps, where each step represents either a note (sound pitch and length) or a rest.
Table 3. Rhythm values
0 Note Rest 1 2 3 4 5 6 7
Note length (including rests) Eight rhythm values for notes and rests can be programmed. Also, 2 or more notes can be musically tied.
Pitch and scale SM1125 series devices perform uniform interval length processing to reduce the error at high pitches. This maintains the relative phase when the frequency varies from the input value. The pitch varies with the clock frequency, as shown in the frequency listing in table 4.
Error calculation:
The frequency variation from the input frequency is the sum of the relative error, shown in the frequency table, plus the pitch error. (Ex) 38.4 kHz system, A4 note Relative error: 8.99 cent Pitch error: -3.58 cent Total: +5.41 cent
Output frequency log 10 ------------------------------------------------Reference frequency Output frequency 1200 x log 2 ------------------------------------------------- = 1200 x -------------------------------------------------------------log 10 2 Reference frequency Output frequency 3986.3 x log 10 ------------------------------------------------Reference frequency 441.379 3986.3 x log 10 -----------------440.000 5.41 cent
NIPPON PRECISION CIRCUITS--8
SM1125 series
Table 4. Frequency range
F r e q u e n cy Number divider 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 247 233 220 208 196 185 175 165 156 147 139 131 124 117 110 104 98 93 87 83 78 74 69 66 62 58 55 52 49 46 44 41 39 37 35 33 31 29 28 26 25 23 22 21 Relative error (cent) 2.49 3.50 2.89 0.00 2.88 2.87 -0.93 0.94 -1.96 0.93 -2.21 0.42 -4.50 -3.91 2.89 0.00 2.88 -6.46 8.99 -9.52 -1.96 -10.81 10.29 -12.74 -4.50 10.95 2.89 0.00 2.88 12.26 -10.79 11.47 -1.96 -10.81 -14.62 -12.74 -4.50 10.95 -28.30 0.00 -32.09 12.26 -10.79 -30.25 32.768 kHz system Pitch C3 C#3 D3 D#3 E3 F3 F#3 G3 G#3 A3 A#3 B3 C4 C#4 D4 D#4 E4 F4 F#4 G4 G#4 A4 A#4 B4 C5 C#5 D5 D#5 E5 F5 F#5 G5 G#5 A5 A#5 B5 C6 C#6 D6 D#6 E6 F6 F#6 G6 37.5 kHz system 38.4 kHz system 48 kHz system Pitch C3 C#3 D3 D#3 E3 F3 F#3 G3 G#3 A3 A#3 B3 C4 C#4 D4 D#4 E4 F4 F#4 G4 G#4 A4 A#4 B4 C5 C#5 D5 D#5 E5 F5 F#5 G5 G#5 A5 A#5 B5 C6 C#6 D6 D#6 E6 F6 F#6 G6 G#6 A6 A#6 B6 C7 C#7 D7 Reference frequency 130.8128 138.5913 146.8325 155.5635 164.8138 174.6143 184.9973 195.9978 207.6525 220.0000 233.0820 246.9418 261.6255 277.1825 293.6650 311.1270 329.6275 349.2285 369.9945 391.9955 415.3050 440.0000 466.1640 493.8835 523.2510 554.3650 587.3300 622.2540 659.2550 698.4570 739.9890 783.9910 830.6100 880.0000 932.3280 987.7670 1046.5020 1108.7300 1174.6600 1244.5080 1318.5100 1396.9140 1479.9780 1567.9820 1661.2200 1760.0000 1864.6560 1975.5340 2093.0040 2217.4600 2349.3200
F r e q u e n cy F r e q u e n cy F r e q u e n cy F r e q u e n cy Pitch Pitch Pitch (Hz) (Hz) (Hz) (Hz) 132.664 140.635 148.945 157.538 167.184 177.124 187.246 198.594 210.051 222.912 235.741 250.137 264.258 280.068 297.891 315.077 334.367 352.344 376.644 394.795 420.103 442.811 474.899 496.485 528.516 564.966 595.782 630.154 668.735 712.348 744.727 799.220 840.205 885.622 936.229 992.970 1057.032 1129.931 1170.286 1260.308 1310.720 1424.696 1489.455 1560.381 D#3 E3 F3 F#3 G3 G#3 A3 A#3 B3 C4 C#4 D4 D#4 E4 F4 F#4 G4 G#4 A4 A#4 B4 C5 C#5 D5 D#5 E5 F5 F#5 G5 G#5 A5 A#5 B5 C6 C#6 D6 D#6 E6 F6 F#6 G6 G#6 A6 A#6 151.822 160.944 170.455 180.288 191.327 202.703 214.286 227.273 240.385 255.102 269.784 286.260 302.419 320.513 340.909 360.577 382.653 403.226 431.034 451.807 480.769 506.757 543.478 568.182 604.839 646.552 681.818 721.154 765.306 815.217 852.273 914.634 961.538 1013.514 1071.429 1136.364 1209.677 1293.103 1339.286 1442.308 1500.000 1630.435 1704.545 1785.714 D#3 E3 F3 F#3 G3 G#3 A3 A#3 B3 C4 C#4 D4 D#4 E4 F4 F#4 G4 G#4 A4 A#4 B4 C5 C#5 D5 D#5 E5 F5 F#5 G5 G#5 A5 A#5 B5 C6 C#6 D6 D#6 E6 F6 F#6 G6 G#6 A6 A#6 155.466 164.807 174.545 184.615 195.918 207.568 219.429 232.727 246.154 261.224 276.259 293.130 309.677 328.205 349.091 369.231 391.837 412.903 441.379 462.651 492.308 518.919 556.522 581.818 619.355 662.069 698.182 738.462 783.673 834.783 872.727 936.585 984.615 1037.838 1097.143 1163.636 1238.710 1324.138 1371.429 1476.923 1536.000 1669.565 1745.455 1828.571 G3 G#3 A3 A#3 B3 C4 C#4 D4 D#4 E4 F4 F#4 G4 G#4 A4 A#4 B4 C5 C#5 D5 D#5 E5 F5 F#5 G5 G#5 A5 A#5 B5 C6 C#6 D6 D#6 E6 F6 F#6 G6 G#6 A6 A#6 B6 C7 C#7 D7 194.332 206.009 218.182 230.769 244.898 259.459 274.286 290.909 307.692 326.531 345.324 366.412 387.097 410.256 436.364 461.538 489.796 516.129 551.724 578.313 615.385 648.649 695.652 727.273 774.194 827.586 872.727 923.077 979.592 1043.478 1090.909 1170.732 1230.769 1297.297 1371.429 1454.545 1548.387 1655.172 1714.286 1846.154 1920.000 2086.957 2181.818 2285.714
+21.84 cent pitch error (Note) A4 is the following note.
-44.64 cent pitch error
-3.58 cent pitch error
-17.26 cent pitch error
A4 (440Hz)
NIPPON PRECISION CIRCUITS--9
SM1125 series Tempo There are 29 tempos that can be selected for each melody. The tempo varies with the clock frequency.
Table 5. Tempo range
RO M Code 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F F r e q u e n cy divider 4 5 6 7 8 9 10 11 Moderato 12 13 14 Andante 15 16 17 18 19 20 Larghetto 21 22 23 24 25 26 27 28 29 30 31 32 Largo 61.0 58.2 55.7 Larghetto 53.3 51.2 49.2 47.4 45.7 Largo 44.1 42.7 41.3 40.0 50.5 48.8 47.3 45.8 Largo 51.7 50.0 48.4 46.9 Largo Larghetto 64.7 62.5 60.5 58.6 61.0 58.6 56.3 54.3 52.3 Larghetto 62.5 60.0 57.7 Adagio 55.6 53.6 69.4 67.0 78.1 75.0 72.1 Adagio 69.8 66.6 63.7 Adagio 71.4 68.2 65.2 Andante 89.3 85.2 81.5 Adagio 85.3 80.0 Andante 75.3 71.1 67.4 64.0 86.2 81.4 77.1 73.2 Andante 88.2 83.3 78.9 75.0 97.7 91.6 100.0 93.8 Moderato 110.3 104.2 98.7 93.8 125.0 117.2 106.7 98.5 91.4 Moderato 122.1 112.7 Moderato 104.6 107.1 125.0 115.4 Allegro 133.9 156.3 144.2 Allegro Presto Prestissimo 32.768 kHz system Te m p o = 320.0 256.0 Prestissimo 213.3 182.9 160.0 142.2 128.0 Allegro 116.4 133.2 Presto 244.1 209.3 183.1 162.8 146.5 Allegro 136.4 Presto 37.5 kHz system Te m p o = 366.2 293.0 Prestissimo 250.0 Prestissimo 214.3 187.5 166.7 150.0 Presto 170.5 267.9 234.4 208.3 187.5 312.5 38.4 kHz system Te m p o = 375.0 300.0 48 kHz system Te m p o = 468.8 375.0
Quarter note ( ) length = 1536 x tempo counter frequency divider / clock frequency (Ex. 1) Tempo code = 1F (divider = 32), clock frequency = 32.768 kHz (32.768 kHz system) 1536 x 32 / 32768 = 1.5 (seconds) (Ex. 2) Tempo code = 18 (divider = 25), CLK frequency = 153.6 kHz (38.4 kHz system) 1536 x 25 / 38400 = 1.0 (seconds)
NIPPON PRECISION CIRCUITS--10
SM1125 series
TYPICAL APPLICATION
External Clock Input Versions
1.5V to 3.6V B+
CONTROLLER
OSC SI SC ST
VSS VDD MTO TEST
Built-in RC Oscillator Versions
2.0 to 3.6V B+
RO OSC CONTROLLER SI SC ST CO VSS VDD MTO TEST
NIPPON PRECISION CIRCUITS--11
SM1125 series
OSCILLATOR FREQUENCY MEASUREMENT
The measurement circuit below shows a SM1125xxV 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
SM1125 OSC
V VSS VDD MTO TEST Frequency Counter
CO
SI SC
Switch
ST
Note that the board mounting and wiring will marginally affect the output frequency, even for equivalent values for RO and CO.
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 apparatus 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, Fukuzumi 2-chome Koto-ku, Tokyo 135-8430, Japan Telephone: 03-3642-6661 Facsimile: 03-3642-6698 NC9628CE 1999.2
NIPPON PRECISION CIRCUITS INC.
NIPPON PRECISION CIRCUITS--12

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