RV-8564 Datasheet, PDF (24/40 Pages) MICORO CRYSTAL SWITZERLAND – I2C-Bus Interface Real Time Clock

Micro Crystal
Real Time Clock / Calendar Module
RV-8564
10.3. SYSTEM CONFIGURATION
Since multiple devices can be connected with the I2C bus, all I2C bus devices have a fixed and unique device
number built-in to allow individual addressing of each device.
The device that controls the I2C bus is the Master; the devices which are controlled by the Master are the Slaves.
A device generating a message is a Transmitter; a device receiving a message is the Receiver. The RV-8564 acts
as a Slave-Receiver or Slave-Transmitter.
Before any data is transmitted on the I2C bus, the device which should respond is addressed first. The addressing
is always carried out with the first byte transmitted after the start procedure. The clock signal SCL is only an input
signal, but the data signal SDA is a bidirectional line.
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