s-24c128ci-t8t1u3 Seiko Instruments Inc., s-24c128ci-t8t1u3 Datasheet - Page 10

• Manufacturer Part Number: s-24c128ci-t8t1u3
• Description: 2-wire Serial Eeprom S-24c128c 128k-bit
• Manufacturer: Seiko Instruments Inc.

10
2-WIRE CMOS SERIAL E
S-24C128C
SDA
(E
SCL
(Master Output)
(E
2
3. Data Transmission
4. Acknowledge
2
PROM Output)
PROM Input)
SDA
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.
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
SDA
Start Condition
t
SU.DAT
2
PROM
Figure 10 Acknowledge Output Timing
Figure 9 Data Transmission Timing
1
Seiko Instruments Inc.
t
HD.DAT
8
Acknowledge
t
Output
AA
9
Rev.2.0
t
DH
_00_H