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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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PCF8553DTT/A датащи(PDF) 37 Page - NXP Semiconductors |
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PCF8553DTT/A датащи(HTML) 37 Page - NXP Semiconductors |
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37 / 51 page  NXP Semiconductors PCF8553 40 × 4 LCD segment driver VDD = 1.8 V to 5.5 V; VSS = 0 V; Tamb = -40 °C to +85 °C; unless otherwise specified; all timing values are valid within the operating supply voltage and Tamb range and are referenced to VIL and VIH with an input voltage swing of VSS to VDD. Symbol Parameter Conditions Min Typ Max Unit tsu(CE_N) CE_N set-up time 30 - - ns th(CE_N) CE_N hold time 10 - - ns trec(CE_N) CE_N recovery time 70 - - ns Pin SDIO tsu set-up time write data 5 - - ns th hold time write data 50 - - ns td(R)SDIO SDIO read delay time CL = 50 pF - - 150 ns tdis(SDIO) SDIO disable time no load - - 50 ns tt(SDI-SDO) transition time from SDI to SDO write to read mode 0 - - ns Table 20. SPI-bus characteristics...continued aaa-012166 CE SCL SDIO SDIO SA2 RA0 b7 b6 b0 SDI b7 b6 b0 b7 b6 b0 SDO READ WRITE high-Z R/W tsu(CE_N) trec(CE_N) tr tf tHIGH tLOW tsu td(R)SDIO tdis(SDIO) tt(SDI-SDO) th th(CE_N) 80 % 20 % Figure 27. SPI-bus timing waveforms PCF8553 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2021. All rights reserved. Product data sheet Rev. 4 — 20 April 2021 37 / 51 |
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