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RC19302A00AGNT#KD0 数据表(PDF) 28 Page - Renesas Technology Corp |
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RC19302A00AGNT#KD0 数据表(HTML) 28 Page - Renesas Technology Corp |
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28 / 62 page ![]() R31DS0210EU0106 Rev.1.06 Page 28 May 11, 2026 RC193xx Datasheet 2.4.9 SMBus Electrical Characteristics Figure 9. SMBus Target Timing Diagram Table 26. SMBus DC Electrical Characteristics [1] 1. VOH is governed by the VPUP, the voltage rail to which the pull-up resistors are connected. The maximum VPUP voltage is 3.6V. Symbol Parameter Conditions Minimum Typical Maximum Unit VIH High-level Input Voltage for SCLK and SDATA VDD = 1.8V 0.8 VDD - 3.6 V VIL Low-level Input Voltage for SCLK and SDATA VDD = 1.8V - - 0.3 VDD VHYS Hysteresis of Schmitt Trigger Inputs - 0.05 VDD - - VOL Low-level Output Voltage for SCLK and SDATA IOL = 4mA - 0.28 0.4 IIN Input Leakage Current per Pin - [2] 2. See I/O Electrical Characteristics. - [2] µA CB Capacitive Load for Each Bus Line - - - 400 pF Table 27. SMBus AC Electrical Characteristics Symbol Parameter Conditions 100kHz Class Unit Minimum Maximum fSMB SMBus Operating Frequency [1] 1. Power must be applied and PWRGD_PWRDNb must be a 1 for the SMBus to be active. 10 100 kHz tBUF Bus free time between STOP and START Condition - 4.7 - µs tHD:STA Hold Time after (REPEATED) START Condition [2] 4 - μs tSU:STA REPEATED START Condition Setup Time - 4.7 - µs tSU:STO STOP Condition Setup Time - 4 - µs tHD:DAT Data Hold Time [3] 0 - ns tSU:DAT Data Setup Time - 250 - ns tTIMEOUT Detect SCL_SCLK Low Timeout [4] 25 35 ms tTIMEOUT Detect SDA_nCS Low Timeout [5] 25 35 ms tLOW Clock Low Period - 4.7 - µs tHIGH Clock High Period [6] 4 50 µs tLOW:SEXT Cumulative Clock Low Extend Time (target [slave] device) [7] N/A. The RC193xx does not extend the clock. ms tLOW:MEXT Cumulative Clock Low Extend Time (host [master] device) [8] N/A. The RC193xx is not a host device. ms tF Clock/Data Fall Time [9] - 300 ns tR Clock/Data Rise Time [9] - 1000 ns tSPIKE Noise Spike Suppression Time [10] - - ns s tHD:STA tLOW tHIGH tSU:STA sr tHD:STA tSU:STO tBUF s P SCL SDA MSB tSU:DAT tHD:DAT |
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