AT24C02N-10SC Atmel, AT24C02N-10SC Datasheet - Page 3

• Manufacturer Part Number: AT24C02N-10SC
• Description: IC EEPROM 2KBIT 400KHZ 8SOIC
• Manufacturer: Atmel

Specifications of AT24C02N-10SC

• Format - Memory: EEPROMs - Serial
• Memory Type: EEPROM
• Memory Size: 2K (256 x 8)
• Speed: 400kHz
• Interface: I²C, 2-Wire Serial
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 8-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Pin Description
Memory Organization
0180T–SEEPR–12/04
SERIAL CLOCK (SCL): The SCL input is used to positive edge clock data into each
EEPROM device and negative edge clock data out of each device.
SERIAL DATA (SDA): The SDA pin is bidirectional for serial data transfer. This pin is
open-drain driven and may be wire-ORed with any number of other open-drain or open-
collector devices.
DEVICE/PAGE ADDRESSES (A2, A1, A0): The A2, A1 and A0 pins are device
address inputs that are hard wired for the AT24C01A and the AT24C02. As many as
eight 1K/2K devices may be addressed on a single bus system (device addressing is
discussed in detail under the Device Addressing section).
The AT24C04 uses the A2 and A1 inputs for hard wire addressing and a total of four 4K
devices may be addressed on a single bus system. The A0 pin is a no connect.
The AT24C08 only uses the A2 input for hardwire addressing and a total of two 8K
devices may be addressed on a single bus system. The A0 and A1 pins are no
connects.
The AT24C16 does not use the device address pins, which limits the number of devices
on a single bus to one. The A0, A1 and A2 pins are no connects.
WRITE PROTECT (WP): The AT24C01A/02/04/16 has a Write Protect pin that provides
hardware data protection. The Write Protect pin allows normal Read/Write operations
when connected to ground (GND). When the Write Protect pin is connected to V
write protection feature is enabled and operates as shown in Table 2.
Table 2. Write Protect
Notes:
AT24C01A, 1K SERIAL EEPROM: Internally organized with 16 pages of 8 bytes each,
the 1K requires a 7-bit data word address for random word addressing.
AT24C02, 2K SERIAL EEPROM: Internally organized with 32 pages of 8 bytes each,
the 2K requires an 8-bit data word address for random word addressing.
AT24C04, 4K SERIAL EEPROM: Internally organized with 32 pages of 16 bytes each,
the 4K requires a 9-bit data word address for random word addressing.
AT24C08, 8K SERIAL EEPROM: Internally organized with 64 pages of 16 bytes each,
the 8K requires a 10-bit data word address for random word addressing.
AT24C16, 16K SERIAL EEPROM: Internally organized with 128 pages of 16 bytes
each, the 16K requires an 11-bit data word address for random word addressing.
WP Pin
Status
At V
At GND
CC
1. This device is not recommended for new designs. Please refer to AT24C08A.
2. This device is not recommended for new designs. Please refer to AT24C16A.
Full (1K)
Array
Normal Read/Write Operations
24C01A
Full (2K)
Array
24C02
Part of the Array Protected
AT24C01A/02/04/08/16
Full (4K)
Array
24C04
Normal
Read/
Write
Operation
24C08
(1)
Upper
Half
(8K)
Array
24C16
CC
, the
(2)
3