The Cypress FM24V10-GTR is a 1 Mbit non-volatile FRAM (Ferroelectric RAM) organized as 128K x 8 bits, accessed over an I²C bus clocked at 3.4 MHz. FRAM combines the read/write endurance of SRAM — no write-cycle limits — with the non-volatility of Flash, but without the erase-before-write penalty or sector granularity. The 130 ns access time means a read completes in roughly 1.3 bus cycles at 3.4 MHz, so the memory can keep pace with a fast microcontroller polling sensor data or logging event counters without wait-state insertion.
If a second-source requirement arises, the FM24V01A-GTR (128 Kbit) and FM24V02A-G (256 Kbit) are pin-compatible drop-in alternatives at lower densities, though the 1 Mbit density is the only one in this speed tier at this capacity.
The Tape & Reel (TR) suffix indicates it ships on 13-inch reels, typical for automated pick-and-place.