ST25DV64KC datasheet(67/203 Pages) STMICROELECTRONICS

Il numero della parte	ST25DV64KC

Spiegazioni elettronici	Dynamic NFC/RFID tag IC with 4-Kbit, 16-Kbit or 64-Kbit EEPROM, fast transfer mode capability and optimized I2C

PDF	203 Pages

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Produttore elettronici	STMICROELECTRONICS [STMicroelectronics]

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I²C operation

6.1

I²C protocol

The device supports the I²C protocol. This is summarized in Figure 30. 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 ST25DVxxKC

device is a slave in all communications.

Figure 30. I²C bus protocol

STOP

Condition

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.

ST25DV04KC ST25DV16KC ST25DV64KC

I²C operation

DS13519 - Rev 3

page 67/203

ST25DV64KC Scheda tecnica(PDF) 67 Page - STMicroelectronics