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BU2090F Datasheet(PDF) 5 Page - Rohm |
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BU2090F Datasheet(HTML) 5 Page - Rohm |
5 / 13 page BU2098F, BU2090F, BU2090FS Technical Note 5/12 www.rohm.com 2009.06 - Rev.A © 2009 ROHM Co., Ltd. All rights reserved. 【 BU2098F】 ● AC characteristics (Unless otherwise noted, VDD=5V, VSS=0V, Ta=25℃) Parameter Symbol Fast mode I 2C BUS Standard mode I 2C BUS Unit Min. Max. Min. Max. SCL clock frequency fSCL 0 400 0 100 kHz Bus free time between start-stop condition tBUS 1.3 - 4.7 - μs Hold time start condition tHD:STA 0.6 - 4.0 - μs Low period of the SCL clock tLOW 1.3 - 4.7 - μs High period of the SCL clock tHIGH 0.6 - 4.0 - μs Set up time Re-start condition tSU:STA 0.6 - 4.7 - μs Data hold time tHD:DAT 0 0.9 0 - μs Data set up time tSU:DAT 100 - 250 - ns Rise time of SDA and SCL tR 20+0.1Cb 300 - 1000 ns Fall time of SDA and SCL tF 20+0.1Cb 300 - 300 ns Set up time stop condition tSU:STO 0.6 - 4.0 - μs Capacitive load for SDA line and SCL line Cb - 400 - 400 pF ● Timing chart Fig.1 SDA, SCL timing chart tBUS SDA P tSU:STO tHD:STA Sr tSU:STA tSU:DAT tf tLOW tHD:DAT tr S P tHD:STA SCL |
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