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FT900Q-R 数据表(PDF) 44 Page - Bridgetek Pte Ltd. |
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FT900Q-R 数据表(HTML) 44 Page - Bridgetek Pte Ltd. |
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44 / 67 page ![]() Copyright © Bridgetek Pte Ltd 44 FT900 /1/2/3 Revision C Embedded Microcontroller Datasheet Version 1.0 Document No. BRT_000172 Clearance No.: BRT#087 Figure 5-4 - 100Base-TX Transmission Waveform I2C Bus I/O pins dynamic characteristics (Vcc (I/O) = 3.3V) Parameter Description Standard mode (SM) Fast mode (FM) Fast mode Plus (FM+) High Speed mode (HS) Unit Min Max Min Max Min Max Min Max FSCL SCL clock frequency 0 100 0 400 0 1000 0 3400 kHz TSCLL SCL clock low period 4.7 - 1.3 - 0.5 - 0.320 - µs TSCLH SCL clock high period 4.0 - 0.6 - 0.26 - 0.120 - µs TSU data setup time 250 - 100 - 50 - 10 - ns THD data hold time 0 - 0 - 0 - 0 150 ns Tr rise time - 1000 - 300 - 120 20 160 ns TrCL1 rise time 1st clock after Sr (HS) 20 160 ns TrCL rise time clock (HS) 20 80 ns Tf fall time - 300 - 300 - 300 20 80 (SCL) 160 (SDA) ns Table 5-12 - I2C I/O pins (I2C0_SCL/SDA, I2C1_SCL/SDA) characteristics |
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