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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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TC1270AMVRCTR датащи(PDF) 15 Page - Microchip Technology |
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TC1270AMVRCTR датащи(HTML) 15 Page - Microchip Technology |
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15 / 40 page  © 2007 Microchip Technology Inc. DS22035B-page 15 TC1270A/70AN/71A 33 — 3 3 MR IST (1) Manual Reset input pin This input allows a push button switch to be directly connected to the TC1270A/70AN/71A’s MR pin, which can then be used to force a system Reset. The input fil- ter (ignores) noise pulses that occur on the MR pin. H = Switch is open (internal pull-up resistor pulls signal high). State of the RST/RST pin determined by other system condi- tions. L = Switch is depressed (shorted to ground). This forces the RST/RST pin Active. 24 — 2 4 VDD — Power Supply Voltage 1 —— 1 — NC — — No Connection TABLE 3-1: PINOUT DESCRIPTION (CONTINUED) Pin Number Sym Pin Standard Function TC1270A (Push-Pull, active low) TC1270AN (Open-Drain, active low) TC1271A (Push-Pull, active high) Type Buffer / Driver Note 1: The MR pin has an internal weak pull-up (18.5 k Ω typical). |
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