View SM112506_4127534.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

SM1125 series 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.
FEATURES
I
PINOUT
(Top view)
OSC SI SC ST 1 2 3 4 8 7 6 5 VSS VDD MTO TEST
I I
I
I
I
I I
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) - 32.768kHz system: 32.768, 65.536 and 131.072kHz - 37.5kHz system: 37.5, 75.0 and 150.0kHz - 38.4kHz system: 38.4, 76.8 and 153.6kHz - 48.0kHz system: 48.0, 96.0 and 192.0kHz * Built-in oscillator versions (4 frequencies) - 38.4kHz (standard oscillator frequency) - 32.768kHz - 37.5kHz - 48.0kHz 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 Molybdenum-gate CMOS process 8-pin plastic VSOP package
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
ORDERING INFORMATION
Device SM1125xxV Package 8pin VSOP
SEIKO NPC CORPORATION --1
0.5 0.2
SM1125 series
BLOCK DIAGRAM
OSC
OSC Gate
Master slice
VSS 1/2 or 1/4 SW2 VDD
SW1
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 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
SEIKO NPC CORPORATION --2
SM1125 series
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 = 1.5 to 3.6V
Rating Parameter Supply voltage (1) Supply voltage (2) Current consumption (1) Current consumption (2) Current consumption (3) Symbol VDD1 VDD2 IDD1 IDD2 IDD3 VIH VIL 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 VDOS 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, VIH = VDD, Ta = 25C ST, SI, SC and OSC (External clock input option) pins, VIL = 0 V, Ta = 25C TEST pin, VIH = VDD TEST pin MTO pin, IOH = 1mA MTO pin, IOL = 1mA Built-in RC oscillator option: NPC test board measurement, RO = 91k, CO = 200pF VDD = 2.0 to 3.6V Built-in RC oscillator option Built-in RC oscillator option Built-in RC oscillator option 1.5 2.0 - - - VDD - 0.2 VSS - - - - VDD - 0.4 VSS 34.5 - - - typ 3.0 3.0 - 25 215 - - - - - - - - 38.4 0.1 - - max 3.6 3.6 0.5 200 600 VDD VSS + 0.2 0.5 0.5 200 0.1 VDD VSS + 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
SEIKO NPC CORPORATION --3
SM1125 series
AC Characteristics
Unless otherwise noted Ta = -20 to 70C, VSS = 0V, VDD = 1.5 to 3.6V
Rating Parameter 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)
VIH 0.5VDD VIL tOr
0.9VDD 0.1VDD
t OWH tOSC
t OWL
tOf
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
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--32.768kHz, 37.5kHz, 38.4kHz (standard frequency) and 48.0kHz.
Table 1. Reference clock frequencies
Frequency system 32.768kHz 37.5kHz 38.4kHz 48.0kHz Selectable frequencies 32.768kHz 37.5kHz 38.4kHz 48.0kHz 65.536kHz 75.0kHz 76.8kHz 96.0kHz 131.072kHz 150.0kHz 153.6kHz 192.0kHz
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
CR Oscillator
Figure 3. Built-in RC oscillator version
SEIKO NPC CORPORATION --5
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 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 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 Melody 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 Melody 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
SEIKO NPC CORPORATION --6
SM1125 series Playback timing diagrams
Playback start
Playback starts 128 1 OSC clock cycles after ST goes HIGH.
Invalid Data SI SC ST
CLK
Valid Data
MSB
LSB
128 1 Clock
*Internal 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
CLK
*Internal Clock
MTO
;;;;;;;;;;;;;;;;; ;;;;;;;;;;;;;;;;; ;;;;;;;;;;;;;;;;;
Figure 7. Stop timing
SEIKO NPC CORPORATION --7
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. Note length (including rests) Eight rhythm values for notes and rests can be programmed. Also, 2 or more notes can be musically tied.
Table 3. Rhythm values
0 Note Rest 1 2 3 4 5 6 7
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. The frequency variation from the input frequency is the sum of the relative error, shown in the frequency table, plus the pitch error. (Ex) 38.4kHz system, A4 note Relative error: 8.99 cent Pitch error: -3.58 cent Total: +5.41 cent
Error calculation:
1200 x log2 Output frequency = 1200 x Reference frequency
log10
Output frequency Reference frequency log102 Output frequency Reference frequency
3986.3 x log10
3986.3 x log10 441.379 440.000
5.41 cent
SEIKO NPC CORPORATION --8
SM1125 series
Table 4. Frequency range
Number 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 Frequency divider 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 38.4kHz system 48kHz system Relative 32.768kHz system 37.5kHz system error Frequency Frequency Frequency Frequency Pitch Pitch Pitch [cent] Pitch [Hz] [Hz] [Hz] [Hz] 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 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 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 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
+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)
SEIKO NPC CORPORATION --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
ROM 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 Frequency 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 32.768kHz system Tempo = 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 37.5kHz system Tempo = 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 38.4kHz system Tempo = 375.0 300.0 48kHz system Tempo = 468.8 375.0
Quarter note ( ) length = 1536 x tempo counter frequency divider / clock frequency (Ex. 1) Tempo code = 1F (divider = 32), clock frequency = 32.768kHz (32.768kHz system) 1536 x 32 / 32768 = 1.5 (seconds) (Ex. 2) Tempo code = 18 (divider = 25), CLK frequency = 153.6kHz (38.4kHz system) 1536 x 25 / 38400 = 1.0 (seconds)
SEIKO NPC CORPORATION --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
VSS
VDD
SI SC ST
CO
MTO TEST
SEIKO NPC CORPORATION --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
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 --12
SM1125 series
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
NC9628DE 2006.04
SEIKO NPC CORPORATION --13

▲Up To Search▲

Price & Availability of SM112506

	To Download SM112506 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .