Datasheet 搜索 > 接口芯片 > NXP（恩智浦） > PCA9542APW/DG,118 数据手册 > PCA9542APW/DG,118 产品设计参考手册 1/64 页
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PCA9542APW/DG,118 产品设计参考手册 - NXP（恩智浦）
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NXP（恩智浦）
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接口芯片
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SOT-402-1
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PCA9542APW/DG,118数据手册
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UM10204
I
2
C-bus specification and user manual
Rev. 6 — 4 April 2014 User manual
Document information
Info Content
Keywords I2C, I2C-bus, Standard-mode, Fast-mode, Fast-mode Plus, Fm+,
Ultra Fast-mode, UFm, High Speed, Hs, inter-IC, SDA, SCL, USDA, USCL
Abstract Philips Semiconductors (now NXP Semiconductors) developed a simple
bidirectional 2-wire bus for efficient inter-IC control. This bus is called the
Inter-IC or I
2
C-bus. Only two bus lines are required: a serial data line
(SDA) and a serial clock line (SCL). Serial, 8-bit oriented, bidirectional
data transfers can be made at up to 100 kbit/s in the Standard-mode, up to
400 kbit/s in the Fast-mode, up to 1 Mbit/s in the Fast-mode Plus (Fm+), or
up to 3.4 Mbit/s in the High-speed mode. The Ultra Fast-mode is a
uni-directional mode with data transfers of up to 5 Mbit/s.
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