64 Kbit I²C EEPROM — still a solid choice for configuration storage
The 1 MHz clock rate and 450 ns access time are typical for this density class — fast enough for parameter tables and calibration constants, not for streaming data.
It is ROHS3 compliant.
1.8 V floor — what it means for low-voltage designs
The supply range goes down to 1.8 V, which is the key spec for battery-powered or low-voltage SoC designs. If your MCU runs its I²C bus at 1.8 V logic, this EEPROM will talk to it directly — no level shifter needed. At the other end, 5.5 V tolerance means it survives on a legacy 5 V rail without a series regulator.
Write-cycle timing — plan for the 5 ms page write
The write cycle time for a word or page is 5 ms. That is the period the part is busy after a write command — the I²C bus is held, and no other traffic can happen. For a configuration block that gets written once at boot, this is invisible. For frequent parameter logging, you need to budget the write latency or use a larger page buffer.
Package and footprint — 8-SOIC, surface-mount
No special reflow profile needed — MSL 1 typical for this package.