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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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DSPIC33FJ12MC02ESS датащи(PDF) 252 Page - Microchip Technology |
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DSPIC33FJ12MC02ESS датащи(HTML) 252 Page - Microchip Technology |
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252 / 284 page  dsPIC33FJ12MC201/202 DS70265B-page 250 Preliminary © 2007 Microchip Technology Inc. FIGURE 23-12: QEA/QEB INPUT CHARACTERISTICS TQ30 TQ35 TQ31 QEA (input) TQ30 TQ35 TQ31 QEB (input) TQ36 QEB Internal TQ40 TQ41 TABLE 23-30: QUADRATURE DECODER TIMING REQUIREMENTS AC CHARACTERISTICS Standard Operating Conditions: 3.0V to 3.6V (unless otherwise stated) Operating temperature -40°C ≤ TA ≤ +85°C for Industrial -40°C ≤ TA ≤ +125°C for Extended Param No. Symbol Characteristic(1) Typ(2) Max Units Conditions TQ30 TQUL Quadrature Input Low Time 6 TCY —ns — TQ31 TQUH Quadrature Input High Time 6 TCY —ns — TQ35 TQUIN Quadrature Input Period 12 TCY —ns — TQ36 TQUP Quadrature Phase Period 3 TCY —ns — TQ40 TQUFL Filter Time to Recognize Low, with Digital Filter 3 * N * TCY — ns N = 1, 2, 4, 16, 32, 64, 128 and 256 (Note 3) TQ41 TQUFH Filter Time to Recognize High, with Digital Filter 3 * N * TCY — ns N = 1, 2, 4, 16, 32, 64, 128 and 256 (Note 3) Note 1: These parameters are characterized but not tested in manufacturing. 2: Data in “Typ” column is at 3.3V, 25°C unless otherwise stated. Parameters are for design guidance only and are not tested. 3: N = Index Channel Digital Filter Clock Divide Select bits. Refer to Section 15. “Quadrature Encoder Interface (QEI)” in the “dsPIC33F Family Reference Manual”. Please see the Microchip (www.microchip.com) web site for the latest dsPIC33F Family Reference Manual chapters. |
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