ST25DV64K datasheet(86/220 Pages) STMICROELECTRONICS

Il numero della parte	ST25DV64K

Spiegazioni elettronici	Dynamic NFC/RFID tag IC with 4-Kbit, 16-Kbit or 64-Kbit EEPROM,and fast transfer mode capability

PDF	220 Pages

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Produttore elettronici	STMICROELECTRONICS [STMicroelectronics]

Homepage	http://www.st.com

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86 / 220 page

I2C operation

ST25DV04K ST25DV16K ST25DV64K

86/220

DocID027603 Rev 4

I2C operation

6.1

I2C protocol

The device supports the I2C protocol. This is summarized in Figure 24: I2C bus protocol.

Any device that sends data to the bus is defined as a transmitter, and any device that reads

data is defined as a receiver. The device that controls the data transfer is known as the bus

master, and the other as the slave device. A data transfer can only be initiated by the bus

master, which also provides the serial clock for synchronization. The ST25DVxxx device is a

slave in all communications.

Figure 24. I2C bus protocol

6.1.1

Start condition

Start is identified by a falling edge of serial data (SDA) while the serial clock (SCL) is stable

in the high state. A Start condition must precede any data transfer command. The device

continuously monitors (except during a write cycle) the SDA and the SCL for a Start

condition, and does not respond unless one is given.

ST25DV64K Scheda tecnica(PDF) 86 Page - STMicroelectronics