DM45026 ETC
Document overview
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Technical content
3 STATES ENCODER
3 態編碼IC EN/DECODER M45026/7/8 一華半導體股份有限公司MOSDESIGN SEMICONDUCTOR CORP. 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 *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 ) Oscillator Control Input X DO Freq Divider Logic unit Control Output DriverY TE Central Z
3 態編碼IC EN/DECODER M45026/7/8 一華半導體股份有限公司MOSDESIGN SEMICONDUCTOR CORP. ABSOLUTE MAXIMUM RATING (TA=25℃) Parameter Rating Unit Supply Voltage -0.3 to 1 5 V Input Voltage -0.2~VDD +0.2 V Operating Temperature -20 to 75 ℃ Storage Temperature -50 to 125 ℃
ELECTRICAL CHARACTERISTICS
Characteristics Sym. Min. Typ. Max. Unit Conditions Operating Voltage VDD 2.4 ─ 15 V Operating Current IOP ─ 0.1 1 μA No load Quiescent Current ISB ─ 0.1 0.5 mA Output Drive Current IO ─ 2 ─ mA @VDS=1.2V VIH VDD –0.2 VDD VDD Input Voltage VIL VSS VSS VSS +0.2 V Oscillator Frequency Fosc ─ 22 ─ KHz External±30% PIN DESCRIPTION No. Name Description 1~7 A0~A7 3 states address inputs
8 VSS Negative power supply
9~10 A7、A8 3 states address inputs
11 X Oscillator input
12 Y Oscillator output
13 Z Oscillator output
14 TE Transmit enable
15 DO Data output
16 VDD Positive power supply
X Y Z TE 1 16 8 9
3 態編碼IC EN/DECODER M45026/7/8 一華半導體股份有限公司MOSDESIGN SEMICONDUCTOR CORP. TIMING WAVEFORM (1) Bit format (2) TIMING DIAGRAM Address / Data Bit OSC "1" "0" "OPEN" 65 ns < t < 1 word 2 words t > 1 word Transmitted Continuously 1 or 2 words N x 2 words DO TE 0 2 4 6 8 10 12 14 16 18 100 125 150 175 200 225 250 275 300 325 350 VDD ( V ) Fosc ( KHz ) 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 M45026 F-V Curve
3 態編碼IC EN/DECODER M45026/7/8 一華半導體股份有限公司MOSDESIGN SEMICONDUCTOR CORP. OPERATING FLOWCHART Power ON Stand-by TEB depressed? 4 words data transmitted TEB still depressed? Y N N
3 態編碼IC EN/DECODER M45026/7/8 一華半導體股份有限公司MOSDESIGN SEMICONDUCTOR CORP. APPLICATION DIAGRAM 參考電路圖 * @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 ) M45027/8 VDD DO A5/D0 IR / RF A6/D1 A7/D2 A8/D3 1 16 8 9 VDD R2RC VSS VT M45026 VDD DO Z Y VDD Rz IR / RF A8/D3 A7/D2 1 16 8 9 A5/D0 A6/D1 VSS VDD Cy RxX TE M45026 VDD DO Z Y VDD Rz IR / RF A8/D3 A7/D2 A5/D0 A6/D1 VSS VDD Cy RxX TE 1 18 9 10