S-24C02DI-J8T1U5 Datasheet, PDF (11/47 Pages) Seiko Instruments Inc – Write protect function during low power supply voltage

Rev.3.0_01_U
 Initial Delivery State
Initial delivery state of all addresses is "FFh".
2-WIRE SERIAL E²PROM
S-24C02D/04D/08D16D
 Operation
1. Initialization operation after power-on
By a power-on-clear circuit, this IC initializes the internal circuit at the time of power-on. Perform the beginning (start
condition) of the instruction transmission to this IC after the initialization by the power-on-clear circuit. Regarding the
datails of power-on-clear, refer to "5. Power-on-clear circuit" in " Usage".
2. Start condition
Start is identified by a "H" to "L" transition of the SDA line while the SCL line is stable at "H".
Every operation begins from a start condition.
3. Stop condition
Stop is identified by a "L" to "H" transition of the SDA line while the SCL line is stable at "H".
When a device receives a stop condition during a read sequence, the read operation is interrupted, and the device
enters standby mode.
When a device receives a stop condition during a write sequence, the reception of the write data is halted, and this IC
initiates a write cycle.
t_INIT
VCC
t_SU.STA t_HD.STA
t_SU.STO
SCL
SDA
Start condition
Figure 5 Start / Stop Conditions after Power-on
Stop condition
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