MSC1215-XX OKI [OKI electronic componets], MSC1215-XX Datasheet
MSC1215-XX
Related parts for MSC1215-XX
MSC1215-XX Summary of contents
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... Duplex Driver with Dimming, Keyscan and A/D Converter Function GENERAL DESCRIPTION The MSC1215- 1/2-duty vacuum fluorescent display tube driver implemented in Bi- CMOS technology. This LSI consists of a 37-bit shift register, 34 latches, an analog dimming circuit, (a PWM conversion circuit), a 3¥4 keyscan circuit, a 6ch-6-bit A/D converter and 17 segment drivers, and 2-grid pre-drivers ...
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... PE CH2 4 4 CH3 CH4 L L CH5 CH6 REF Detector Col With 100kW pull-up resistor MSC1215-xx SEG17 bit 17-1 Test Test1-8 (Grid1) SW1 (VF Data) 3-bit SW2 (Keyscan) Latch SW3 (A/D) Mode Select bit1 3-bit S/R GRID1 Grid Pre-driver GRID2 to PWM OUT 6-bit dig. comp. " ...
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... Schematic Diagrams of Logic Portion Output Circuit (5V Reg.) (5V Reg.) GND GND (5V Reg.) GND • Schematic Diagrams of Logic Portion Input/ Output Circuit (5V Reg.) (5V Reg.) GND GND • Schematic Diagrams of Driver Output Circuit V DD OUTPUT GND MSC1215-xx V (5V Reg.) DD DATAI/O GND GND GND V DD OUTPUT GND 3/22 ...
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... SEG17 18 SEG 6 19 SEG 7 20 SEG 42-Pin Plastic DIP MSC1215-xx COL3 COL2 COL1 VD V REF CH6 CH5 CH4 CH3 CH2 CH1 GND OSC0 OSC1 VK DATA I/O CS CLOCK ROW 1 ROW 2 ROW 3 4/22 ...
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... Condition V — — All inputs except VK IH1 V VK IH2 V All inputs IL f — R=4.7 kW, C=10 pF osc f — FR MSC1215-xx Rating Unit –0.3 to +20 V –0 –0 400 mW –55 to +150 °C Min. Typ. Max. Unit 8 — –40 — 85 ° ...
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... SEG,GRID, V =9.5 V OL1 DD I =500 mA OL1 I =200 mA OL1 OL1 V DATA I/O, ROW1-3 OL2 V =9 =200 mA DD OL2 I f =3.3 MHz, no load DD osc MSC1215-xx (Ta=–40 to +85° 18V) DD Min. Max. Unit 3.8 — V — 0.8 V – –70 –5 mA – –160 – -0.8 — ...
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... Reset mode RCSL t — CSS t — CSH t — =100 pF ODS =100 t=20% to 80% or 80 — PCS MSC1215-xx (Ta=–40 to +85° Min. Max. Unit 2 4.5 MHz — 250 kHz 1.3 — 1 — 200 — 8 — 32 — 4 — 4 — ...
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... OSC Condition f =3.3MHz OSC f =3.3MHz OSC Condition — t =10%Æ90%, t =90%Æ10 t=50%Æ50% VD pin VD pin VD pin VD pin MSC1215-xx (Ta=–40 to +85° 18V) DD Min. Typ. Max. Unit — — ±3 % — — ±6 % (Ta=–40 to +85° Min. ...
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... TIMING DIAGRAM 3 0 CSS 3.8 V CLOCK 0 3.8 V DATA I/O VALID (INPUT) 0 CSS 3.8 V CLOCK 0.8 V 3.8 V DATA I/O (OUTPUT) 0 CSW Figure 1. DATA Input Timing t PD Figure 2. DATA Outpout Timing MSC1215-xx t CSL t CSH VALID t CSH t PD 9/22 ...
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... Figure 5. SEG-GRID output Timing (Daylight Mode) Note: 1. Timing shown for analog dimming with a duty cycle of 2032/2048 at VK="L". 2. 1-bit time=T (=4/f OSC t RCSW t RCSL t CSW t ODS Frame Cycle f FR 4096-bit times 16-bit times min 10-bit times )=1.2 s typical. OSC MSC1215- 10/22 ...
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... Note: 1. Key scanning from ROW1 to ROW3 is started when any key is pushed down or released. Scanning will stop when CS turns to "L" from "H", after 2 times of CS pulses and the transfer of display data. 1 Frame Cycle f FR 4096-bit times )=1.2 s typical. OSC Figure 7. PWM Waveform Keyscan Pulse Width Figure 8. Keyscan Timing MSC1215-xx 11/22 ...
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... When "L" is input, the daylight mode is selected and the output duty cycle becomes about 100%. • VD Analog/PWM dimming data input pin Analog/PWM dimming mode selection will be done by an internal detection circuit automati- cally. • V REF Reference voltage output pin for the A/D converter Keyscan Display Data Output Figure 9. Keyscan Stop Timing MSC1215-xx Keyscan Stop 12/22 ...
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... RC oscillation input pins A resistor and a capacitor are connected to these pins. (See figure below) • SEG1-17 Segment output pins • GRID1, 2 Grid output pins Output an inverted signal of a grid signal. These pins are connected to inputs of external drivers (such as a PNP transistor). OSC1 R OSC0 C MSC1215-xx 13/22 ...
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... The other status are the same as before the serial 2CS pulses were applied. POWER-ON *1 Input Mode Dispaly Data Input CS="H" Test Data Input Input Total Keyscan Data Output CS="H" (12 bits) A/D Data Output CS="H" (36 Bit) MSC1215-xx (34 bits) CS="L" (3 bits) (37 bits) CS="L" CS="L" 14/22 ...
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... MSB-LSB CH6 CH5 Display Data S31 S24 S23 S22 S21 S14 24-19 18-13 12-7 MSB-LSB MSB-LSB MSB-LSB CH4 CH3 CH2 MSC1215- First Test Data * First out S13 S12 S11 6-1 First out MSB-LSB CH1 15/22 ...
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... Therefore, the PWM conversion error increases as the rise/fall time of the lamp PWM increases. ROW1 ROW2 ROW3 S11 S21 S31 S12 S22 S32 S13 S23 S33 S14 S24 S34 = output pin is connected to a variable resistor forming a REF [Circuit Example] V REF Variable CH1 Resistor MSC1215-xx COL1 COL2 COL3 COL4 16/22 ...
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... The maximum threshold voltage is 5.0V. 5. Minimum & Maximum VDIM Input Voltage The minimum threshold voltage step is 20mV. Only for the first step, the threshold voltage can be any value between 20mV and 3V min 20mV max MSC1215-xx DUTY CYCLE STEP 512kHz 17/22 ...
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... LAMP PWM VFD PWM STEP No. DUTY CYCLE DUTY CYCLE 33 58.75% 34 57.50% 35 56.25% 36 55.00% 53.75% 37 52.50% 38 51.25% 39 50.00 48.75% 42 47.50% 43 46.25% 44 45.00% 43.75% 45 42.50% 46 41.25% 47 40.00% 48 38.75% 49 37.50 36.25% 35.00 33.75% 32.50% 54 31.25% 55 30.00% 56 28.75% 57 27.50 26.25% 25.00 23.75% 22.50 21.25% 64 20.00% MSC1215-xx 18/22 ...
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... PWM maximum table Threshold Pulse Step Voltage Number % MSC1215-xx =2.8 V) (@V DD Threshold PWM Duty Cycle Voltage Pulse Count % 56/2048 2.73 52/2048 2.54 48/2048 2.34 46/2048 2.25 44/2048 2.15 42/2048 2.05 40/2048 1.95 38/2048 1.86 36/2048 1.76 34/2048 1.66 1.56 32/2048 1.46 ...
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... APPLICATION CIRCUITS Dimming Mode 12 V Small Lamp Switch Dashboard Lamp Lamp PWM Signal ROW V DD GND DATAI/O CLOCK CS V REF MSC1215-xx CH1 CH6 VK VD SEG1 1/2 Duty VF Display Tube MSC1215- COL GRID1 12 V GRID2 OSC1 OSC0 SEG17 20/22 ...
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... Semiconductor Analog Dimming Mode 12 V Small Lamp Switch Brightness Control Resistor Dashboard Lamp ROW V DD GND DATAI/O CLOCK CS V REF MSC1215-xx CH1 CH6 VK VD SEG1 1/2 Duty VF Display Tube MSC1215- COL GRID1 12 V GRID2 OSC1 OSC0 SEG17 21/22 ...
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... Therefore, before you perform reflow mounting, contact Oki’s responsible sales person for the product name, package name, pin number, package code and desired mounting conditions (reflow method, temperature and times). MSC1215-xx (Unit : mm) Package material Epoxy resin ...