MICROCHIP AT24CSW010-UUM0B-T

The Atmel AT24CSW01 and AT24CSW02 Device Family Series provides 1,024 / 2,048 bits of Serial Electrically Erasable and Programmable Read-Only Memory (EEPROM) organized as 128 / 256 words of 8 bits each. The device is optimized for use in many industrial and commercial applications where low-power and low-voltage operation are essential. The device features a Software Write Protection feature with five different programmable levels of protection for the EEPROM array. The protection settings of the device can made permanent if desired. Safeguards are included to prevent accidental invocation of the permanent feature. Additionally, each device includes a Security Register with an extra 256 bits of EEPROM beyond the nominal EEPROM array. The Security Register is comprised of a read-only section of 16 bytes and an additional user-programmable section of 16 bytes. The Security Register begins with a read-only section that contains a factory programmed guaranteed unique 128-bit Serial Number. The time consuming step of performing and ensuring true serialization of a product on a manufacturing line can be removed from the production flow by employing a CS Series Serial EEPROM. The 128-bit Serial Number is programmed and permanently locked from future writing during the Atmel production process. Further, this 128-bit location does not consume any of the user read/write area of the 1-Kbit / 2-Kbit Serial EEPROM. The uniqueness of the Serial Number is guaranteed across the entire CS Series of Serial EEPROMs regardless of the size of the memory array or the type of interface protocol. This means that as an application’s needs for memory size or interface protocol evolve in future generations, any previously deployed Serial Number from any Atmel CS Series Serial EEPROM part will remain valid. Following the 128-bit read-only Serial Number in the Security Register is an additional 16 bytes of EEPROM organized as 2 pages of 8 bytes each. This region of the Security Register is user-programmable, and if so desired, can later be permanently write protected with a software sequence. This user-programmable section of the Security Register is ideal for applications that need to irreversibly protect critical or sensitive application data. The AT24CSW01x/02x is available in a best-in-class 4-ball Ultra-Thin WLCSP package and is accessed via an I²C-compatible 2-wire serial interface. Other package options are available upon request. The device operates with a supply voltage ranging from 1.7V to 3.6V.

• Low-voltage Operation VCC = 1.7V to 3.6V
• Internal Organization: 128x8 (1-Kbit, 128 byte) 256x8 (2-Kbit, 256 byte)
• I²C-Compatible (2-Wire) Serial Interface 100kHz Standard Mode, 1.7V to 3.6V 400kHz Fast Mode (FM), 1.7 to 3.6V 1MHz Fast Mode Plus (FM+), 1.7V to 3.6V
• Software Write Protection of the EEPROM Array Five configuration options Protection settings can be made permanent
• 256-bit Security Register Unique, factory-programmed, 128-bit Serial Number in the first 16 bytes, Permanent read-only value, Guaranteed unique across entire CS Series of Serial EEPROMs Additional 16 bytes of free user EEPROM provided to store critical user data, Can be made permanently read-only with a simple software sequence, Ideal for applications that need to protect critical or sensitive application data
• Factory Set Hardware Slave Address Unique ordering code for each available slave address value (AT24CSW01x/02x)
• Ultra Low Active Current (1mA max) and Standby Current (0.8μA max)
• 8-byte Page Write Mode Partial Page Writes and single Byte Write support included
• Self-timed Write Cycle (5ms max)
• High-reliability Device Endurance: 1,000,000 write cycles Data retention: 100 years
• Schmitt Trigger, Filtered Inputs for Noise Suppression
• Green Package Options (Lead-free/Halide-free/RoHS-compliant) 4-ball Ultra-Thin WLCSP