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| MOSDESIGN SEMICONDUCTOR CORP. EN/DECODER 3 STATES ENCODER 3 IC GENERAL DESCRIPTION M318E The M318E is a CMOS ASIC encoder. It will en-code 12 parallel data inputs (A0~A11) and serially TE transmit them to the output when transmits enable (TE) depressed. The address inputs are 3 states i.e. LOW (0)OPEN (X) or HIGH(1). It will transmit 1 cycle each depressed. FEATURES * Same Rosc matched to the DECODER M318D/F * 318 =387,420,489 codes, "0""X""1" Tri-state * Internal code A0~A7 1 0 1 1 1 0 A8~A11 * 1 cycle transmission each time * Direct data transmit type : (Eliminating TE and diodes) M318E-H : switch to VDD APPLICATIONS * Car/home alarm system, garage control etc.. BLOCK DIAGRAM X Oscillator Y Freq Divider Output Driver DO TE A0 Input Control Central Control Logic unit IR Carrier A11 *All specs and applications shown above subject to change without prior notice. ( , ) 1/5 2001-09-10 MOSDESIGN SEMICONDUCTOR CORP. EN/DECODER 3 STATES ENCODER 3 IC ABSOLUTE MAXIMUM RATING Parameter Supply Voltage Input Voltage Operating Temperature Storage Temperature Rating -0.3 to 15 -0.2~VDD +0.2 -50 to 125 0 to 70 M318E (TA=25) Unit V V ELECTRICAL CHARACTERISTICS Characteristics Operating Voltage Operating Current Quiescent Current Output Drive Current Input Voltage Oscillator Frequency Sym. VDD IOP ISB IO VIH VIL Fosc Min. 2.4 VDD -0.2 VSS Typ. 0.1 0.1 2 VDD VSS 76 Max. 15 1 0.5 VDD VSS +0.2 Unit V A mA mA V KHz External30%, Rosc=240K @VDS=1.2V No load Conditions PIN DESCRIPTION No. 1~8 9 10~13 14 15 16 17 18 Name A0~A7 VSS A8~A11 TE Y X DO VDD Description Address inputs Negative power supply Address inputs Transmit enable Oscillator output Oscillator input Data output Positive power supply A0 A1 A2 A3 A4 A5 A6 A7 VSS M318E 1 18 VDD DO X Y TE A11 A10 A9 9 10 A8 2/5 2001-09-10 MOSDESIGN SEMICONDUCTOR CORP. EN/DECODER 3 STATES ENCODER 3 IC TIMING WAVEFORM (1) Bit format 1 40 41 119 120 160 200 201 279 280 320 M318E OSC 120 CLOCKS 120 CLOCKS "0" "OPEN" "1" 40 CLOCKS 40 CLOCKS 40 CLOCKS 120 CLOCKS 120 CLOCKS 40 CLOCKS 40 CLOCKS 120 CLOCKS 120 CLOCKS 40 CLOCKS (2) TIMING DIAGRAM TE D0~D3 (M41831E-H) 1st WORD 18 bits SYNC 4 bits SYNC 2nd WORD 4th WORD DO M318E F-V curve 250 75K 82K 200 91K 100K 150 Freq (KHz) 180K 100 200K 220K 50 270K 360K 0 2 7 VDD ( Volt ) 12 17 120K 150K 3/5 2001-09-10 MOSDESIGN SEMICONDUCTOR CORP. EN/DECODER 3 STATES ENCODER 3 IC OPERATING FLOWCHART M318E Power ON Stand-by N TEB depressed? 4 words data transmitted N TEB still depressed? Y 4/5 2001-09-10 MOSDESIGN SEMICONDUCTOR CORP. EN/DECODER 3 STATES ENCODER 3 IC APPLICATION DIAGRAM (1) DIP PACKAGE (VDD) VDD 1 A0 A1 X A2 Y A3 A4 A5 A10/D1 A6 A9/D2 A7 VSS 9 10 A8/D3 A7 VSS 9 10 A6 TE A11/D0 A5 Rosc VDD A3 A4 A2 Y 0 1 18 DO A1 X Rosc M318E M318E VDD IR / RF VDD 1 A0 0 M318E-H VDD 1 18 DO IR / RF VDD D0 D1 D2 D3 (2) SOP PACKAGE (VDD) VDD 1 A0 A1 X A2 Y A3 A4 A5 A10/D1 A6 A9/D2 A7 VSS 10 11 A8/D3 A7 VSS 10 11 A6 D2 D3 TE A11/D0 A5 Rosc VDD A3 A4 VDD D0 D1 A2 Y 0 1 20 A0 DO A1 X Rosc M318E-S VDD IR / RF VDD 1 0 M318E-HS VDD 1 20 DO IR / RF 5/5 2001-09-10 |
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