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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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MCP2155 датащи(PDF) 30 Page - Microchip Technology |
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MCP2155 датащи(HTML) 30 Page - Microchip Technology |
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30 / 52 page  MCP2155 DS21690B-page 30 Preliminary 2001-2013 Microchip Technology Inc. 4.2 Timing Parameter Symbology and Load Conditions The timing parameter symbols have been created following one of the following formats: 4.2.1 TIMING CONDITIONS The temperature and voltages specified in Table 4-2 apply to all timing specifications unless otherwise noted. Figure 4- 2 specifies the load conditions for the timing specifications. TABLE 4-1: SYMBOLOGY TABLE 4-2: AC TEMPERATURE AND VOLTAGE SPECIFICATIONS FIGURE 4-2: LOAD CONDITIONS FOR DEVICE TIMING SPECIFICATIONS 1. TppS2ppS 2. TppS T F Frequency T Time EError Lowercase letters (pp) and their meanings: pp io Input or Output pin osc Oscillator rx Receive tx Transmit bitclk RX/TX BITCLK RST Reset drt Device Reset Timer Uppercase letters and their meanings: S F Fall P Period HHigh R Rise I Invalid (Hi-impedance) V Valid L Low Z Hi-impedance AC CHARACTERISTICS Standard Operating Conditions (unless otherwise stated) Operating temperature –40 C TA +85C (industrial) Operating voltage VDD range as described in DC spec Section 4.1. PIN VSS CL CL = 50 pF for all pins, except OSC2 15 pF for OSC2 when external clock is used to drive OSC1 21690B.book Page 30 Thursday, January 10, 2013 1:06 PM |
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