UM338 ETC2 | Alldatasheet

Document overview

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Technical content

Features

™ 1.36V—5V operating voltage ® Low stand-by current ® 64-note memory . ® Built-in oscillator and pre-emplifier circuit ® Volume control capability ® A piezo or magnetic buzzer can be driven by con- ™ On-chip envelope modulator necting an NPN transistor General Description The UM338X series is 8 mask programmed simple generator _also includes a pre-amplifier which provides simple interface implemented in the CMOS technology. The melody to the drive circuit. signal is generated according to the previously programmed tone rhythm and tempo information. By properly The UM338X series is intended for application such as toys, Modifying the envelope of the electric signal, sound music box, melody clock/timers and telephones. effect of piano or organ may be generated. The device : | Pin Configuration Block Diagram ke ee eeeneiienaieieieiete | * osct e+ i 5 osc2 OSCILLATOR TONE MODULATOR Lt-s eny osc; [Ji 14[1¥o0 | ocss GENERATOR " H x 1 1 osc, [42 13 [mt H 1 . a ocs3[]3 12} Jor, ' ' mTo ¢ . UM338X cE CONTROL MELODY ' 4 cel ]4 “Series 1? |19P8 rete circuit ROM | m1 3 i) 1 retC]s tof] Nc i Li “ nc[Je 9] To { . i ! 1 . OP, OP, 1-12 . '

; NITED MICROELECTRONICS 92 DEB 9325812 Oooos72 2 i ee . 9325812 UNITED MICROELECTRONICS 92D 00572 D 7-77-73 } ©ume UM338X Series Absolute Maximum Ratings* . *Comments . DC Supply Voltage vse. ssssssssssss -O3Vto5V Sess above those listed under “Absolute Maximum Rating” may cause permanent damage to the device. is not implied and exposure to absolute maximum rating ghee conditions for extended periods may affect device 8 Ae reliability. a2 ee

Electrical Characteristics

(Vpp = 1.5, Vgg = OV, Ta = 25°C, unless otherwise specified.) a Output Current 7 OP1 Terminal Vor = 0.8 200 uA Output Current - OF2 Terminal |_| Vow = 07V 700 | - | | uA Pin Description Ez a x | ; 2 | osz i PIN 1 to PIN 3 connected as an RC oscillator : Chip enabled when CE = Vin : 4 ce Chip disabled when CE = Vit z Song repeated if RPT = Vin : RPT Song stopped as melody ends if RPT = Vip. . a [0 ne es }-—2—} 2 Preemie oust ) 3 =| om | Modulated tone signal input to the ‘pre-amplifier an) 1-13 ' - none oe enna ote een ene — _— .

UNITED MICROELECTRONICS 92 DEM 9325812 0000573 9 r , 9325812 UNITED MICROELECTRONICS 92D 00573 D7277-/3 4 ‘ i Ou: Mic. UM338X Series E Bonding Diagram 2 osc2 OSC Yoo Pad No. Designation x Y Bo [3] | wr 1 osct — -320.04 980.44 : 2 osc2 624.84 980.44 2 osca} [3] UMSSEX Serie fia] | oF: 3 osc3 -929.64 865.98 % 4 cE 920.64 6350 z . E 5 RPT 929.64 850.90 1 ce} [4] x £ 6 NC ~686.80 980.44 a (0, 0) [i] Jor: 8 7 Vss ~226.08 980.44 ¥ 8 ENV 48.26 -980.44 & NC 9 MTO 904,24 980.44 ef 10 NC 904.24 -670.56 = pet] [5] a te sro 1 Pt 904.24 ~388,62 3 12 op2 904.24 419.10 ke i NC Veg ENV 13 MT1 904.24 980.44 = 2.18 mm unit: pln 14 Vpp 441.96 980.44 = : = Function Description @ Oscillation and Control Circuit z The resistor Ry and capacitor C, are connected externally Usually there are only 63 words available for the melody = for setting the frequency (typically 60KHZ). Addition programming since 1 word is used for the control of = of resistor Rg in series with input inverter is to make automatic stop. = circuit insensitive to the variation of the supply voltage. 2 Under stand-by condition (CE is low) the operation of the Tone Generator . e built-in oscillating circuit is inhibited. As soonasahigh The tone generator is a programmed divider. It divides %. fevel signal enters into the CE input, the circuit starts the base frequency by 72 to 264 following the data stored = oscillating. Since the oscillation frequency is used 24 . in the melody ROM. The central “Do” is 263.16Hz : . time base to the tone genefator and the rhythm generator, —_—if the base frequency is BOKH2z; the scale range is from Fi its accuracy will affect the quality of the music, Bt04, Ky Melody ROM Enveloping Circuit and Modulator = ‘The mask ROM can memorize 64 words with 7 bits each. The tone signal is put through an enveloping circuit and = Of these, 4 bits are us@d for controlling the tone generator ‘the output waveform shown in Figure 1 is produced. 3 and 3 bits are used for controlling the rhythm generator. z AU inn PIANO EFFECT ; Figure 1, Waveform of modulated tone output (MTO) SSeS 1-14 '

9325812 UNITED MICROELECTRONICS 92D 00574 D777 -/3 |

6 FFFFSSSSSSSSCSFeeseFsFSSCSFSI3'3EX Seorr'ile’s

1 Zam See

Figure 2. The enveloping circuit Figure 3, Feedback resistor Rs must be connected to and OP is pulled down to Vgg. Figure 3. Pre-amplifier circuit 3

: UNITED MICROELECTRONICS 92@ DEM 9925812 O000575 2 T oe

9325812 UNITED MICROELECTRONICS 92D 00575 D 7297-13

®Oume UM338X Series —_ SSS—S—SSSSCSMU M3 3'EX SSorr'ile's: TYPICAL APPLICATION CIRCUIT USING SPEAKER - Vp -—~ : | . . sm | | oO c; R; Cc, a Rs 270K 0 Me | . a, a | 9013 9012 | = . = C2 Teo] TF | vara | 100K | 14 13 12 " 10 9 8 !) UM338xX Series | 1 2 3 4 5 6 7 . Rg R, ¢, Sw. 820K 180K 479 SWa ° L | Song Series List a um33e1 Jingle Bells ‘ UM3381—1 A Mediey of Jingle Bells, Santa Claus is Coming to Town and We Wish You a Merry Christmas UM3381-2 A Medley of Silent Night and The First Noel : UM3381-3 A Medley of Jingle Bells, Deck the Halls and Joy to the World UM3382 A Medley of Three Blind Mice and Farmer in the Dell . . = UM3382—1 Lullaby (Brahams) : UM3382—2 Counting the Frogs; (Chinese children’s song) UM3382-~3 A Medley of Happy Birthday and For He is a Jotly Good Fellow UM3363 Blue Bells of Scotland — UM3383—1 Beethoven Symphony No. 9_ UM3363-2 Home Sweet Home . UM3383-3. Comet Train * < - 4 ; — H o ' 1-16 - “ me — oe