MB85RC16 Datasheet, PDF (4/20 Pages) Fujitsu Component Limited. – Memory FRAM 16 K (2 K x 8) Bit I2C

MB85RC16
■ I²C COMMUNICATION PROTOCOL
The I²C bus provides communication by two wires only, therefore, the SDA input should change while SCL
is the “L” level. However, when starting and stopping the communication sequence, SDA is allowed to change
while SCL is the “H” level.
• Start Condition
To start read or write operations by the I²C bus, change the SDA input from the “H” level to the “L” level while
the SCL input is in the “H” level.
• Stop Condition
To stop the I²C bus communication, change the SDA input from the “L” level to the “H” level while the SCL
input is in the “H” level. In the reading operation, inputting the stop condition finishes reading and enters the
standby state. In the writing operation, inputting the stop condition finishes inputting the rewrite data.
• Start Condition, Stop Condition
SCL
SDA
Start
Stop
Note : The FRAM device does not need the programming wait time (tWC) after issuing the Stop Condition during
the write operation.
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DS501-00001-2v0-E