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ST72345C4 Folha de dados(PDF) 150 Page - STMicroelectronics

Nome de Peças ST72345C4
Descrição Electrónicos  SCI asynchronous serial interface
PDF  247 Pages
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Fabricante Electrônico  STMICROELECTRONICS [STMicroelectronics]
Página de início  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST72345C4 Folha de dados(HTML) 150 Page - STMicroelectronics

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Doc ID 12321 Rev 6
11.6
I2C bus interface (I2C)
11.6.1
Introduction
The I2C bus interface serves as an interface between the microcontroller and the serial I2C
bus. It provides both multimaster and slave functions, and controls all I2C bus-specific
sequencing, protocol, arbitration and timing. It supports fast I2C mode (400 kHz).
11.6.2
Main features
●
Parallel-bus/I2C protocol converter
●
Multi-master capability
●
7-bit/10-bit Addressing
●
Transmitter/Receiver flag
●
End-of-byte transmission flag
●
Transfer problem detection
I2C master features
●
Clock generation
●
I2C bus busy flag
●
Arbitration lost flag
●
End of byte transmission flag
●
Transmitter/receiver flag
●
Start bit detection flag
●
Start and Stop generation
I2C slave features
●
Stop bit detection
●
I2C bus busy flag
●
Detection of misplaced start or stop condition
●
Programmable I2C address detection
●
Transfer problem detection
●
End-of-byte transmission flag
●
Transmitter/receiver flag
11.6.3
General description
In addition to receiving and transmitting data, this interface converts it from serial to parallel
format and vice versa, using either an interrupt or polled handshake. The interrupts are
enabled or disabled by software. The interface is connected to the I2C bus by a data pin
(SDAI) and by a clock pin (SCLI). It can be connected both with a standard I2C bus and a
Fast I2C bus. This selection is made by software.



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