AT24C128C-XHM-B Atmel, AT24C128C-XHM-B Datasheet - Page 6

• Manufacturer Part Number: AT24C128C-XHM-B
• Description: EEPROM SERIAL EEPROM 128K (16K x 8) 2WIRE 1.7V
• Manufacturer: Atmel

Specifications of AT24C128C-XHM-B

• Rohs: yes
• Factory Pack Quantity: 100

6.
Device Operation
Clock and Data Transitions: The SDA pin is normally pulled high with an external device. Data on the SDA pin may
change only during SCL low time periods (See
stop condition as defined below.
Figure 6-1.
Start Condition: A high-to-low transition of SDA with SCL high is a start condition that must precede any other command
(See
Figure 6-2. Start and Stop Definition
Stop Condition: A low-to-high transition of SDA with SCL high is a stop condition. After a read sequence, the stop
command will place the EEPROM in a standby power mode (See
Acknowledge: All addresses and data words are serially transmitted to and from the EEPROM in 8-bit words. The
EEPROM sends a zero during the ninth clock cycle to acknowledge that it has received each word.
Standby Mode: AT24C128C features a low-power standby mode that is enabled upon power-up and after the receipt of
the stop bit and the completion of any internal operations.
SDA
SDA
Figure
SCL
SCL
6-2).
Data Validity
Start
Data Stable
Change
Data
Figure
6-1). Data changes during SCL high periods will indicate a start or
Data Stable
Figure
Stop
6-2).
Atmel AT24C128C [DATASHEET]
8734B–SEEPR–9/2012
6