一華半導體股份有限公司 EN/DECODER MOSDESIGN SEMICONDUCTOR CORP. M45026/7/8 3 STATES ENCODER 3 態編碼 IC GENERAL DESCRIPTION 功能敘述 The M45026 is a CMOS ASIC encoder. It will en-code 9 parallel inputs and serially transmit them to the output when TE depressed. These address inputs are 3 states i.e. LOW (0)、OPEN (X) and HIGH (1). FEATURES 產品特長 • RC oscillator. • 39 =19,683 codes, “0”,”X”,”1” Tri-states. • Minimum two transmission words. APPLICATIONS 產品應用 • Car/home alarm system, garage control etc.. BLOCK DIAGRAM 功能方塊圖 X Y Freq Divider Oscillator Output Driver DO Z TE A0 Input Central Control Control Logic unit A8 *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 ) 1/5 2004-05-28 一華半導體股份有限公司 EN/DECODER MOSDESIGN SEMICONDUCTOR CORP. M45026/7/8 3 STATES ENCODER 3 態編碼 IC ABSOLUTE MAXIMUM RATING (TA=25℃) Parameter Supply Voltage Input Voltage Operating Temperature Storage Temperature Rating -0.3 to 15 Unit V -0.2~VDD +0.2 V -20 to 75 ℃ -50 to 125 ℃ ELECTRICAL CHARACTERISTICS Characteristics Operating Voltage Sym. VDD Min. 2.4 Typ. ─ Max. 15 Unit V Operating Current IOP ─ 0.1 1 μA Quiescent Current ISB ─ 0.1 IO ─ 2 0.5 ─ mA Output Drive Current VIH VDD –0.2 VDD VDD VIL VSS ─ VSS VSS +0.2 ─ Input Voltage Oscillator Frequency Fosc 22 mA Conditions No load @VDS=1.2V V KHz External±30% PIN DESCRIPTION M45026 No. 1~7 Name A0~A7 Description 3 states address inputs 8 9~10 11 VSS A7、A8 X Negative power supply 3 states address inputs Oscillator input 12 13 14 Y Z TE Oscillator output Oscillator output Transmit enable 15 16 DO VDD Data output Positive power supply 2/5 A0 1 16 VDD A1 DO A2 TE A3 Z A4 Y A5 X A6 A8 VSS 8 2004-05-28 9 A7 一華半導體股份有限公司 EN/DECODER MOSDESIGN SEMICONDUCTOR CORP. M45026/7/8 3 STATES ENCODER 3 態編碼 IC TIMING WAVEFORM (1) Bit format OSC "1" "0" "OPEN" Address / Data Bit (2) TIMING DIAGRAM TE 65 ns < t < 1 word t > 1 word DO Transmitted Continuously 2 words 1 or 2 words N x 2 words ( N = 1, 2, 3, .... ) Fosc ( KHz ) M45026 F-V Curve 350 325 300 275 250 225 200 175 150 125 100 75 50 25 0 Rz=20KO , Cy=120PF, Rx=10KO Rz=20KO , Cy=250PF, Rx=10KO Rz=20KO , Cy=500PF, Rx=10KO Rz=20KO , Cy=1000PF, Rx=10KO Rz=20KO , Cy=2200PF, Rx=10KO Rz=20KO , Cy=5000PF, Rx=10KO 0 2 4 6 8 10 12 14 16 18 VDD ( V ) 3/5 2004-05-28 一華半導體股份有限公司 EN/DECODER MOSDESIGN SEMICONDUCTOR CORP. M45026/7/8 3 STATES ENCODER 3 態編碼 IC OPERATING FLOWCHART Power ON Stand-by N TEB depressed? 4 words data transmitted N TEB still depressed? Y 4/5 2004-05-28 一華半導體股份有限公司 EN/DECODER MOSDESIGN SEMICONDUCTOR CORP. M45026/7/8 3 STATES ENCODER 3 態編碼 IC APPLICATION DIAGRAM 參考電路圖 M45026 VDD A0 0 VDD VDD 1 1 16 M45027/8 VDD 1 IR / RF A0 DO 1 0 16 A5/D0 A1 A1 TE A6/D1 A2 A2 Z Rz A3 Y Cy A4 X Rx A7/D2 A3 A8/D3 A4 VDD A5/D0 R1 VT C1 RC A8/D3 A6/D1 VSS VSS 8 8 9 DO M45026 VDD VDD 1 A0 A7/D2 9 0 1 18 IR / RF DO A1 TE A2 Z Rz A3 Y Cy A4 X Rx VDD A5/D0 A8/D3 A6/D1 A7/D2 VSS 9 10 * @VDD=12V, Rx=20 KΩ, Rz=10KΩ, Cy=500 PF. * 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 ) 5/5 2004-05-28 C2 R2 IR / RF