MN63Y1208 Datasheet, PDF (74/120 Pages) Panasonic Semiconductor – Built-in 4-Kbit FeRAM non-volatile memory with fast write and low power consumption

Chapter 5 Serial Communication Mode
5.1 Serial Communication Mode Sequence
This RFID provides a serial communication function via I2C interface.
The host is the master and the RFID operates as the slave.
Figure 5-1 illustrates the sequence in serial communication mode. Each sequence is described below.
SNo.1 (slave reception): The host sends a serial commuinication mode command to the RFID.
SNo.2 (slave transmission): Once the RFID receives the serial communication mode command described in
SNo.1, it processes the command and then sends the result to the host as the response to the
command.
It is also possible to read the status of the RFID by omitting SNo.1 and performing only SNo.2.
R/W
RFID
Host
Serial communication mode command
SNo.1
Response to serial communication mode command
SNo.2
Figure 5-1 Serial Communication Mode Sequence
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