MSS0287 MOSEL VITELIC VOICE ROM Features Single power can operate at 2.4V through 6V. current output can drive 8 ohm speaker with a transistor. Total maximum duration is 2.8 seconds. Speech + mute is about 21.8 seconds. Automatic power down. Repeat function that can repeat up to 8 times. CDS interface is provided. It can not trigger itself by stop pulse. Mask option for either level or edge trigger type. Mask option for LED flasher, BUSY output or STOP pulse output. Mask option for either long (20ms) or short (5ms) debounce time. Mask option for either holdable output or not. Mask option for either fixed (6Hz) or dynamic type on LED flasher. Mask option for either retrigger or not. General Description The MSS0287 is a single-chip CMOS LSI that memorizes voice up to 2.8 seconds using the MOSEL qualified coding method (MPCM). The chip contains most of the necessary circuit like oscillator, PLA, D/A converter, buzzer buffer, control and timing logic . Therefore, it can apply to various voice systems with minimum external parts. Several device can be combined to reach longer voice duration (longer than 2.8 seconds). Customer speech data will be edited and programmed into PLA by changing one mask during the device fabrication. Block Diagram VDD VSS OSCILLATOR OSC ADDRESS GENERATOR PLA D/A COUT CONTROL LOGIC LED/BUSY/STOP 1 TG PID223B 02/95 MSS0287 MOSEL VITELIC VOICE ROM Absolute Maximum Rating Symbol Unit Rating VDD ~ VSS VIN (TG) -0.5 ~ +7.0 V VSS -0.3 < V IN < VDD+0.3 V VOUT (STOP) VSS <VOUT < VDD V T (Operating) -10 ~ +60 C T (Storage) -55 ~ +125 C Pad Description Pad No. Signal Name I/O Function 1 V DD Power Positive power supply 2 OSC I Oscillator resistor input 3 Reserved NC Reserved no Connection 4 LED/BUSY/STOP O LED flasher output/BUSY signal output/One shot stop signal output. 5 TG I Trigger input, active high 6 C OUT O Current output for driving speaker 7 VSS Power Negative power supply DC Characteristics Symbol Parameter ISB Supply IOP Current IIH I IL Min. Typ. Stand by Operating Max. Unit 1 µA VDD = 4.5V, I/O Open µA VDD = 4.5V 200 +15 Input Current (TG) 0 Condition IOC Output Current (C OUT ) 5 mA VDD = 3V, full scale. IBZ Output Current ( BUSY ) -9 mA VDD = 4.5V, ISTOP Output Current ( STOP ) -9 mA VDD = 4.5V, IOH -8 IOL Output Current (LED) mA VDD = 4.5V, VO/P = VOH VDD = 4.5V, VO/P =V OL +8 ∆F/F Frequency Stability +5 % ∆F/F Frequency Variation +10 % F OSC(4.5V) - F OSC (4V) F OSC(4.5V) VDD = 4.5V, ROSC = 1.2MΩ AC Characteristics Symbol T STOP TT Parameter Pulse Width (STOP) Minimal trigger pulse width Min. Typ. Max. Unit 40 ms 20 5 ms 2 Condition VDD=4.5V Mask = long Mask = short PID223B 02/95 MSS0287 MOSEL VITELIC Timing Diagram I. Edge Trigger Mask I.1. Unholdable output with BUSY output TG AUDIO BUSY I.2. Unholdable output with STOP Pulse TG AUDIO STOP TSTOP I.3. Unholdable output with Fixed-Type LED Flasher TG AUDIO LED I.4. Unholdable output with Dynamic-Type LED Flasher TG AUDIO LED I.5. Holdable output with BUSY output TG AUDIO BUSY I.6. Holdable output with STOP Pulse TG AUDIO STOP I.7. Holdable output with Fixed-Type LED Flasher TG AUDIO LED I.8. Holdable output with Dynamic-Type LED Flasher TG AUDIO LED 3 PID223B 02/95 MOSEL VITELIC MSS0287 II. Level Trigger Mask II.1. Unholdable output with BUSY output TG AUDIO BUSY II.2. Unholdable output with Stop Pulse TG AUDIO STOP II.3. Unholdable output with Fixed-Type LED Flasher TG AUDIO LED II.4. Unholdable output with Dynamic-Type LED Flasher TG AUDIO LED II.5. Holdable output with BUSY output TG AUDIO BSUY II.6. Holdable output with Stop Pulse TG AUDIO STOP II.7. Holdable output with Fixed-Type LED Flasher TG AUDIO LED II.8. Holdable output with Dynamic-Type LED Flasher TG AUDIO LED III. Debounce Time TG TT AUDIO 4 PID223B 02/95 MSS0287 MOSEL VITELIC Application Circuit 1. Typical application R1 S VDD OSC 3 2 1 1940 um 1120um 4 L/B/S 6 5 7 TG Pin No. Designation 1 VDD 2 OSC 3 NC 4 L/B/S 5 TG 6 COUT 7 VSS X Y -366.3 -358.3 -358.3 13 266 358.3 366.3 -19.6 -340.8 -677.2 -769.2 -769.2 -233.0 -21.8 Note: Substrate is VDD T COUT VSS PAD SIZE =90 X 90 um R2 2. CDS application 3. Power on play VDD R1 OSC C OUT TG VSS VDD R1 S S OSC T C OUT TG VSS R2 T R2 Note: a. R1 =1.2MΩ (S.R.=6KHz ) , T ( transistor ) = ß > 150 ,S (speaker) =1/4W ,8Ω ; all typical. b. R2=470Ω ( typical ) to bypass extra current into base to get rid of waveform saturation on collector . c. In order to avoid false ( or noise ) trigger. 1. To minimize the routing of trigger signal. 2. The routing of trigger signal should be as far away as possible to speaker signal. MOSEL No. 1, Ceration Road I, Hsinchu Science-Based Industrial Park, Hsinchu, Taiwan, R.O.C. TEL:886-35-783344 FAX:886-35-772788 3910 North Frist street, San Jose, CA. 95134-1501 U.S.A. TEL:1-408-433-6000 FAX:1-408-433-0952 ™A∞»±MΩu∂«Øu°G 886-35-784732 5 PID223B 02/95