一華半導體股份有限公司 EN/DECODER MOSDESIGN SEMICONDUCTOR CORP. 2 STATES ENCODER 2 態編碼 IC M1EA GENERAL DESCRIPTION 功能敘述 The M1EA is a CMOS ASIC encoder. It will en-code 12 parallel data inputs and serially transmit them to the output when transmit enable (TE) depressed. These address inputs are 2 states i.e. LOW (0) or OPEN (1). FEATURES 產品特長 • Same Rosc matched to the Decoder M1DA/FA . • 212 = 4,096 codes. • 4 cycles transmission each time. • Direct data transmit type：(Eliminating TE and diodes). ─M1EA-H：switch to VDD. APPLICATIONS 產品應用 • Car/home alarm system, garage control etc.. BLOCK DIAGRAM 功能方塊圖 X Freq Divider Oscillator Y Output Driver DO TE A0 Input Control Control Logic unit A11 *All specs and applications shown above subject to change without prior notice. ( 以上電路及規格僅供參考,本公司得逕行修正 ) 1/6 2005-03-10 一華半導體股份有限公司 EN/DECODER MOSDESIGN SEMICONDUCTOR CORP. 2 STATES ENCODER 2 態編碼 IC M1EA ABSOLUTE MAXIMUM RATING (TA=25℃) Parameter Supply Voltage Input Voltage Rating -0.3 to 12 Unit V -0.2~VDD +0.2 V 0 to 70 ℃ -50 to 125 ℃ Operating Temperature Storage Temperature ELECTRICAL CHARACTERISTICS Characteristics Operating Voltage Sym. VDD Min. 2.4 Typ. ─ Max. 12 Unit V Operating Current IOP ─ 0.1 1 mA Quiescent Current ISB ─ 0.1 μA Output Drive Current IO ─ 2 0.5 ─ VIH VDD –0.2 VDD VDD VIL VSS ─ VSS VSS +0.2 ─ Input Voltage Oscillator Frequency Fosc 76 mA Conditions No load @VDS=1.2V V KHz External±30% PIN DESCRIPTION No. 1~8 9 10~13 14 M1EA Name A0~A7 Description Address inputs VSS A8~A11 Negative power supply Address inputs Transmit enable 15 16 17 TE Y X DO 18 VDD Oscillator output Oscillator input Data output Positive power supply A0 18 VDD A1 DO A2 X A3 Y A4 TE A5 A11 A6 A10 A7 A9 VSS 2/6 1 9 2005-03-10 10 A8 一華半導體股份有限公司 EN/DECODER MOSDESIGN SEMICONDUCTOR CORP. 2 STATES ENCODER 2 態編碼 IC M1EA TIMING WAVEFORM (1) B IT FORMAT 1 2 32 33 64 65 96 OSC 32 CLOCKS "0" 64 CLOCKS 64 CLOCKS "OPEN" 32 CLOCKS (2) TIMING DIAGRAM TE A0 DO 12 BITS A11 A0 1st WORD A11 4th WORD SYNC SYNC M1EA F-V curve 250 75K 82K 200 91K 100K 120K 150 150K Freq (KHz) 180K 100 200K 220K 50 270K 360K 0 2 7 12 17 VDD ( Volt ) 3/6 2005-03-10 一華半導體股份有限公司 EN/DECODER MOSDESIGN SEMICONDUCTOR CORP. 2 STATES ENCODER 2 態編碼 IC M1EA OPERATING FLOWCHART Power ON Stand-by N TEB depressed? 4 words data transmitted N TEB still depressed? Y 4/6 2005-03-10 一華半導體股份有限公司 EN/DECODER MOSDESIGN SEMICONDUCTOR CORP. 2 STATES ENCODER 2 態編碼 IC M1EA RECONNENDED OSCILLATOR PARAMETERS Rosc (KΩ) 75 M1EA/DA/FA (KHz) 261 82 241 91 100 220 203 120 168 150 180 133 113 200 101 220 270 94 75 300 67 330 360 63 56 DATA OUTPUT M1EA (D0~D3) 0 (VSS) 1 (OPEN) M1DA/FA (D0~D3) 1 (VDD) 0 (VSS) Freq-Rosc Chart ( @Vdd=12V ) 300 Freq ( KHz ) 250 200 150 M1EA/DA/FA 100 50 0 0 50 100 150 200 250 300 350 400 Rosc ( KO ) 5/6 2005-03-10 一華半導體股份有限公司 EN/DECODER MOSDESIGN SEMICONDUCTOR CORP. 2 STATES ENCODER 2 態編碼 IC M1EA APPLICATION DIAGRAM 參考電路圖 M1EA M1EA VDD A0 1 18 VDD IR / RF Y IR / RF 16 A2 X A2 1 DO DO A1 A0 X A3 Rosc Y A3 Rosc A4 A4 TE A5 TE A5 D3 A6 D3 A6 D2 A7 D2 A7 D1 VSS VSS 9 8 9 D0 10 M1EA-S 1 20 VDD A0 IR / RF DO A1 X A2 Y Rosc A3 A4 TE A5 A11/D3 A6 A10/D2 A7 A9/D1 VSS 10 11 A8/D0 6/6 2005-03-10 D1