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TC1027CEPR 数据表(PDF) 7 Page - Microchip Technology |
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TC1027CEPR 数据表(HTML) 7 Page - Microchip Technology |
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7 / 18 page ![]() © 2002 Microchip Technology Inc. DS21284B-page 7 TC1027 FIGURE 4-3: 32.768 kHz “TIME OF DAY” CLOCK OSCILLATOR FIGURE 4-4: NON-RETRIGGERABLE MULTIVIBRATOR FIGURE 4-5: SQUARE WAVE GENERATOR + VDD VOUT VDD RB 150k RA 150k RC 1M CA 100pF 32.768kHz Vper = 30.52µsec 1/4 TC1027 – + – + – VDD CMPTR1 CMPTR2 IN IN OUT OUT R3 1M R4 1M R6 562k R7 1M R2 100k R1 100k R8 D2 D1 10M R9 243k R5 10M C1 100pF R10 61.9k A B C GND t0 C GND VDD GND VDD TC1025 TC1027 + – R1 100k VDD R4 VDD R3 100k R2 100k C1 VH = R2 (VDD) R2 + (R1||R3) VL = (VDD) (R2||R3) R1 + (R2||R3) FREQ = 1 2(0.694)(R4)(C1) 1/4 TC1027 |
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