FOR AUTOMOTIVE 105°C OPERATION 2-WIRE SERIAL E2PROM
S-24CS01A/02A/04A H Series
3. Data transmission
Changing the SDA line while the SCL line is low, data is transmitted.
Changing the SDA line while the SCL line is high, a start or stop condition is recognized.
tSU.DAT
tHD.DAT
Rev.3.1_03
SCL
SDA
Figure 9 Data Transmission Timing
4. 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
SDA
(Master Output)
8
9
SDA
(E2PROM Output) Start Condition
Figure 10 Acknowledge Output Timing
Acknowledge
Output
tAA
tDH
10