AT24C256-10PI-2.7 Atmel, AT24C256-10PI-2.7 Datasheet - Page 7
![IC EEPROM 256KBIT 1MHZ 8DIP](/photos/7/29/72987/at24c256-10pi-2_7_sml.jpg)
AT24C256-10PI-2.7
Manufacturer Part Number
AT24C256-10PI-2.7
Description
IC EEPROM 256KBIT 1MHZ 8DIP
Manufacturer
Atmel
Datasheet
1.AT24C128BW-SH-B.pdf
(23 pages)
Specifications of AT24C256-10PI-2.7
Format - Memory
EEPROMs - Serial
Memory Type
EEPROM
Memory Size
256K (32K x 8)
Speed
400kHz, 1MHz
Interface
I²C, 2-Wire Serial
Voltage - Supply
2.7 V ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Package / Case
8-DIP (0.300", 7.62mm)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AT24C256-10PI-2.7
Manufacturer:
ATM
Quantity:
2 000
Company:
Part Number:
AT24C256-10PI-2.7
Manufacturer:
ATM
Quantity:
2 000
Company:
Part Number:
AT24C256-10PI-2.7
Manufacturer:
ATMEL
Quantity:
21 456
Device
Operation
0670T–SEEPR–3/07
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 Figure 4 on
page 9). Data changes during SCL high periods will indicate a start or stop condition as
defined below.
START CONDITION: A high-to-low transition of SDA with SCL high is a start condition which
must precede any other command (see Figure 5 on page 9).
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 Fig-
ure 5 on page 9).
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 acknowl-
edge that it has received each word.
STANDBY MODE: The AT24C128/256 features a low power standby mode which is enabled:
a) upon power-up and b) after the receipt of the STOP bit and the completion of any internal
operations.
MEMORY RESET: After an interruption in protocol, power loss or system reset, any two-wire
part can be reset by following these steps: (a) Clock up to 9 cycles, (b) look for SDA high in
each cycle while SCL is high and then (c) create a start condition as SDA is high.
AT24C128/256
7