本应用笔记讨论，在SPI（串行外设接口）模式，SDA引脚直接连接到VDD之间可能存在一个潜在的低阻抗路径。 AN10485
SDA pin connection in SPI mode
Rev. 01 ― 2 June 2006 Application note
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Keywords SC16IS740, SC16IS750, SC16IS760, SC16IS752, SC16IS762, PCA9502,
I2C UART, SPI UART, SPI I/O expander
Abstract This application note discusses that a potentially low-impedance path might
exist between VDD and VSS (ground) when the SDA pin is connected directly to
VDD in SPI (Serial Peripheral Interface) mode.
Philips Semiconductors AN10485
SDA pin connection in SPI mode
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