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EM3027IDSWS8 bảng dữ liệu(PDF) 22 Page - EM Microelectronic - MARIN SA |
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EM3027IDSWS8 bảng dữ liệu(HTML) 22 Page - EM Microelectronic - MARIN SA |
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22 / 28 page ![]() EM3027 Copyright 2013, EM Microelectronic-Marin SA 3027-DS.doc, Version 8.0, 25-Jan-13 22 www.emmicroelectronic.com 10 AC Characteristics 10.1 AC characteristics – I2C VSS = 0V and TA=-40 to +125°C, unless otherwise specified PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS SCL Clock Frequency fSCL Vcc 3.0V 400 kHz Vcc >1.8V 300 Vcc>1.4V 100 Bus Free Time Between STOP and START Condition tBUF Vcc 3.0V 0.6 μs Vcc >1.8V 0.8 Vcc>1.4V 1.0 Hold Time (Repeated) START Condition tHD:STA Vcc 3.0V 0.3 0.4 0.5 μs Vcc >1.8V Vcc>1.4V LOW Period of SCL Clock tLOW Vcc 3.0V 1.3 μs Vcc >1.8V 1.7 Vcc>1.4V 4.5 HIGH Period of SCL Clock tHIGH Vcc 3.0V 0.6 μs Vcc >1.8V 0.7 Vcc>1.4V 0.9 Setup Time START Condition tSU:STA Vcc 3.0V 0.3 ns Vcc >1.8V 0.4 Vcc>1.4V 0.5 Data Hold Time tHD:DAT Vcc 3.0V 0.3 ns Vcc >1.8V 0.4 Vcc>1.4V 0.5 Data Setup Time tSU:DAT Vcc 3.0V 0.3 ns Vcc >1.8V 0.4 Vcc>1.4V 0.5 Data Valid Time tVD:DAT Vcc 3.0V 1.2 μs Vcc >1.8V 1.5 Vcc>1.4V 4.0 Data Valid Acknowledge Time tVD:ACK Vcc 3.0V 0.9 μs Vcc >1.8V 1.1 Vcc>1.4V 3.5 Rise Time of Both SDA and SCL Signals tR Vcc 3.0V 200 ns Vcc >1.8V 300 Vcc>1.4V 1000 Fall Time of Both SDA and SCL Signals (See note 1) tF Vcc 3.0V 200 ns Vcc >1.8V 300 Vcc>1.4V 400 Setup Time (Repeated) STOP Condition tSU:STO Vcc 3.0V 0.3 ns Vcc >1.8V 0.4 Vcc>1.4V 0.5 Length of spikes suppressed by the input filter on SCL and SDA tSP 50 ns Capacitive Load For Each Bus Line CB 200 pF I/O Capacitance (SDA, SCL) CI/O 10 pF Table 13: I2C AC characteristics Parameters are guaranteed by design. They are not tested in production . Calculation of external pull –up resistor |
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