包括:I/O电平(VIH/VIL)、I/O驱动能力(IOL)、脉冲尖峰抑制脉宽(tsp:time of spike suppression)、输出斜率控制SDA_IN/SCL_IN信号的下降延时(output slope control) 说明: (1)VIH、VIL和Vhys指标:输入端口所接的施密特触发器触发电压与回滞电压; (2)VOL、IOL指标:IOL为I/O端口的下拉能力,VOL即下拉低电平值...
别急别急, 事情都是慢慢明朗起来的。 如果此时你回去看最上面的第一张图,那么你就发现图中有一个I2C Expander,对了,问题就出自这里,通过我们从上面的讨论,我们已经知道, 3.3V的上电不是一帆风顺的,而是会有一个Spike,也就是一个倒钩。如下面所示: 我再来给一张清晰一点图,VCC每次上电都是先被12V-Fan I/...
别急别急, 事情都是慢慢明朗起来的。 如果此时你回去看最上面的第一张图,那么你就发现图中有一个I2C Expander,对了,问题就出自这里,通过我们从上面的讨论,我们已经知道, 3.3V的上电不是一帆风顺的,而是会有一个Spike,也就是一个倒钩。如下面所示: 我再来给一张清晰一点图,VCC每次上电都是先被12V-Fan I/...
(Notes 4, 6) 20 + 0.1Cb 300 ns Fall Time of Both SDA and SCL Signals, Receiving tF (Notes 4, 6) 20 + 0.1Cb 300 ns Fall Time of SDA Signal, Transmitting Pulse Width of Spike Suppressed Capacitive Load for Each Bus Line tF, TX tSP Cb (Notes 4, 7) (Notes 4, 8) (Note 4)...
However, the time delay must be sufficient to qualify the rising edge as a true message rather than a noise spike. Note 11: The message stop is defined by two consecutive periods when the bus has no rising edge. Tolerance around this time is based on the tBIT-M error budget. Note 12...
(FM+) I2C BUS fscl I2C clock frequency tsch I2C clock high time tscl I2C clock low time tsp I2C spike time tsds I2C serial data setup time tsdh I2C serial data hold time ticr I2C input rise time ticf I2C input fall time MIN MAX MIN MAX MIN MAX 0 100 0 400 0 1000 4 0.6 0.26...
(see 图 8-1) STANDARD MODE I2C BUS MIN MAX fscl I2C clock frequency tsch I2C clock high time tscl I2C clock low time tsp I2C spike time tsds I2C serial-data setup time tsdh I2C serial-data hold time ticr I2C input rise time ticf I2C input fall time tocf I2C output fall time 10...
*N 2023-04-26 USB-Serial Dual Channel (UART/I2C/SPI) Bridge with CAPSENSE™ and BCD Application examples In a battery charger system.a 9-V spike on the VBUS is possible. The CY7C65215/CY7C65215A VBUS pin is intol-...
The inputs of Hs-mode devices incorporate spike suppression and a Schmitt trigger at the SDAH and SCLH inputs. The output buffers of Hs-mode devices incorporate slope control of the falling edges of the SDAH and SCLH signals.The figure below shows the physical I 2 C-bus configuration i...
(ack) Cb I2C clock frequency I2C clock high time I2C clock low time I2C spike time I2C serial-data setup time I2C serial-data hold time I2C input rise time I2C input fall time I2C output (SDn) fall time (10-pF to 400-pF bus) I2C bus free time between stop and start I2C start or...