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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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PCF8545 датащи(PDF) 47 Page - NXP Semiconductors |
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PCF8545 датащи(HTML) 47 Page - NXP Semiconductors |
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47 / 68 page  NXP Semiconductors PCF8545 Universal LCD driver for multiplex rates up to 1:8 aaa-008331 Tamb (ºC) -45 95 60 25 -10 40 80 120 IDD(LCD) (µA) 0 VLCD = 5.5 V 1:8 multiplex drive mode; 1⁄4 bias; display enabled; LCD outputs are open circuit; RAM is all written with logic 1; default display prescale factor. Typical is defined at 25 °C. Figure 39. Typical IDD(LCD) when display is active with respect to temperature 13 Dynamic characteristics VDD = 1.8 V to 5.5 V; VSS = 0 V; VLCD = 2.5 V to 5.5 V; Tamb = -40 °C to +85 °C; unless otherwise specified. Symbol Parameter Conditions Min Typ Max Unit fclk clock frequency output on pin OSCCLK; VDD = 3.3 V [1] 7 800 9 600 11 040 Hz fclk(ext) external clock frequency EFR = 0 - - 250 000 Hz t(RESET_N) RESET_N pulse width LOW time 400 - - ns External clock source used on pin OSCCLK tclk(H) clock HIGH time 33 - - μs tclk(L) clock LOW time 33 - - μs Table 33. Dynamic characteristics [1] Frequency present on OSCCLK with default display frequency division factor. PCF8545 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2021. All rights reserved. Product data sheet Rev. 2 — 4 October 2021 47 / 68 |
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