S-24C02DI-J8T1U5 Datasheet, PDF (12/47 Pages) Seiko Instruments Inc – Write protect function during low power supply voltage

2-WIRE SERIAL E²PROM
S-24C02D/04D/08D16D
4. Data transmission
Changing the SDA line while the SCL line is "L", data is transmitted.
Changing the SDA line while the SCL line is "H", a start or stop condition is recognized.
t_SU.DAT
t_HD.DAT
Rev.3.0_01_U
SCL
SDA
Figure 6 Data Transmission Timing
5. Acknowledge
The unit of data transmission is 8 bits. During the 9th clock cycle period the receiver on the bus pulls down the SDA
line to acknowledge the receipt of the 8-bit data.
When an internal write cycle is in progress, the device does not generate an acknowledge.
SCL
(E²PROM input)
1
8
SDA
(Master output)
SDA
(E²PROM output)
Start condition
Figure 7 Acknowledge Output Timing
9
Acknowledge
output
t_AA
t_DH
12