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Atmel Electronic Components Datasheet

AT24MAC402 Datasheet

2-Kbit Serial EEPROM

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AT24MAC402 and AT24MAC602
I2C-Compatible (2-wire) 2-Kbit Serial EEPROM with a
Factory-Programmed EUI-48or EUI-64Address
Plus an Embedded Unique 128-bit Serial Number
2-Kbit (256 x 8)
Standard Serial EEPROM Features
DATASHEET
Low-voltage Operation
̶ 1.7V Minimum (VCC = 1.7V to 5.5V)
Internally Organized as 256 x 8 (2K)
I2C-compatible (2-wire) Serial Interface
Schmitt Trigger, Filtered Inputs for Noise Suppression
Bi-directional Data Transfer Protocol
400kHz (1.7V) and 1MHz (2.5V, 5.0V) Compatibility
Write Protect Pin for Hardware Data Protection of the Entire Array
Permanent and Reversible Software Write Protection for the First-half of the
Array
̶ Software Procedure to Verify Write Protect Status
16-byte Page Write Modes
̶ Partial Page Writes Allowed
Self-timed Write Cycle (5ms max)
High-reliability
̶ Endurance: 1,000,000 Write Cycles
̶ Data Retention: 100 Years
Green Package Options (PB/Halide-free/RoHS Compliant)
̶ 8-lead JEDEC SOIC, 8-lead TSSOP, 8-pad UDFN, and 5-lead SOT23
Die Sale Options: Wafer Form and Tape and Reel
Enhanced Features in the MAC Serial EEPROM Family
Factory-programmed EUI-48 or EUI-64 Compatible Address
̶ Permanently Locked, Read-only Value
̶ Stored in a Separate Memory Area
̶ Guaranteed Unique EUI Address
Custom Programming Services Available
̶ Manage and Program Customer’s IEEE Assigned OUI
Unique Factory-programmed 128-bit Serial Number
̶ Unique for all Atmel® AT24CS, AT93CS, and AT25S Series Serial EEPROMs
̶ Permanently Locked, Read-only Value
̶ Stored in a Separate Memory Area
Atmel-8807E-SEEPROM-AT24MAC402-602-Datasheet_012015


Atmel Electronic Components Datasheet

AT24MAC402 Datasheet

2-Kbit Serial EEPROM

No Preview Available !

1. Description
The Atmel AT24MAC402 and AT24MAC602 provides 2048 bits of Serial Electrically-Erasable Programmable
Read-Only Memory (EEPROM) organized as 256 words of eight bits each and is accessed via an
I2C-compatible (2-wire) serial interface. In addition, AT24MAC402/602 incorporates an easy and inexpensive
method to obtain a globally unique MAC or EUI address (EUI-48 or EUI-64). AT24MAC402 is an EUI-48
compatible device that contains a 48-bit EUI address, and AT24MAC602 is an EUI-64 compatible device that
contains a 64-bit EUI address.
The EUI-48 and EUI-64 addresses can be assigned as the actual physical address of a system hardware device
or node or it can be assigned to a software instance. These addresses are factory programmed by Atmel and
permanently write protected in an extended memory block located outside of the standard 2-Kbit bit memory
array.
In addition, the AT24MAC402/602 provides the value added feature of a factory-programmed, guaranteed
unique 128-bit serial number located in the extended memory block (same area as the EUI address values).
The serial number is Atmel factory-programmed and permanently write protected. This 128-bit serial number is
compatible with all AT24CS, AT93CS, and AT25S family serial numbers, therefore, providing guaranteed
unique serial numbers for any application that is also using Atmel Serial EEPROMs.
The first-half of the AT24MAC402/602 incorporates a permanent and a reversible software write protection
feature while a hardware write protect feature for the entire array is available via an external pin. The permanent
software write protection is enabled by sending a special command to the device. This protection cannot be
reversed once executed. However, the reversible software write protection can be reversed by sending and
executing a special command. The hardware write protection is controlled by the WP pin state and can be used
to protect the entire array regardless of whether or not the software write protection has been enabled. The
software and hardware write protection features allow the user the flexibility to protect no portion of the memory,
the first-half of the memory, or the entire memory array depending on the specific needs of the application.
The device is optimized for use in many industrial and commercial applications where low-power and
low-voltage operations are essential. The AT24MAC402/602 is available in space saving 8-lead JEDEC SOIC,
8-lead TSSOP, 8-pad UDFN, and 5-lead SOT23 packages. Both devices operate across a wide supply voltage
range from 1.7V to 5.5V VCC.
2 AT24MAC402/602 [DATASHEET]
Atmel-8807E-SEEPROM-AT24MAC402-602-Datasheet_012015


Part Number AT24MAC402
Description 2-Kbit Serial EEPROM
Maker ATMEL Corporation
Total Page 30 Pages
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