AT24C256C-MAHL-T Atmel, AT24C256C-MAHL-T Datasheet - Page 6

• Manufacturer Part Number: AT24C256C-MAHL-T
• Description: IC EEPROM 256KBIT IND 8UDFN
• Manufacturer: Atmel

Specifications of AT24C256C-MAHL-T

• Format - Memory: EEPROMs - Serial
• Memory Type: EEPROM
• Memory Size: 256K (32K x 8)
• Speed: 400kHz, 1MHz
• Interface: I²C, 2-Wire Serial
• Voltage - Supply: 1.7 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 8-UDFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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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 (refer to Figure 2). Data changes during SCL high periods
will indicate a start or stop condition as defined below.
Figure 4-1.
START CONDITION: A high-to-low transition of SDA with SCL high is a start condition that must precede any
other command (refer to Figure 2-2).
Figure 4-2.
SDA
SCL
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 (refer to Figure 3).
ACKNOWLEDGE: All addresses and data words are serially transmitted to and from the EEPROM in 8-bit words.
The EEPROM sends a “0” during the ninth clock cycle to acknowledge that it has received each word.
STANDBY MODE: The Atmel
and after the receipt of the stop bit and the completion of any internal operations.
Atmel AT24C256C
SDA
SCL
S
T
A
Start and Stop Definition
Data Validity
R
T
DATA STABLE
®
AT24C256C features a low-power standby mode that is enabled upon power-up
CHANGE
DATA
DATA STABLE
S
T
O
P
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