8 Mbit FRAM on a 1.8V rail – the fit for low-power logging
The Cypress CY15V108QI-20LPXI is an 8 Mbit non-volatile FRAM from the Excelon™-LP family, organized as 1M x 8 and accessed over an SPI bus at 20 MHz. It runs on a 1.71V to 1.89V supply, which means it drops straight onto a 1.8V digital rail without a separate regulator — a common requirement in battery-operated sensors, portable instruments, and IoT edge nodes where every millivolt of headroom matters. The FRAM technology writes at bus speed with no write-cycle delays and no wear-out mechanism, so it replaces serial Flash or EEPROM in applications that log frequent, small data packets: metering, event recorders, and configuration storage that sees thousands of updates over the product life.
SPI at 20 MHz – bus timing margin
The 20 MHz SPI clock is a moderate rate for FRAM — fast enough for most data-logging and parameter-storage tasks, but not the fastest in the Excelon family. The 8-GQFN package (3.23 x 3.28 mm) keeps trace lengths short, which helps maintain signal integrity on the SPI bus at this speed. No external initialization is required; the device powers up ready to accept commands.
Active production – no LTB watch needed
The CY15V108QI-20LPXI carries an Active lifecycle status from Cypress (now Infineon). There is no announced last-time-buy or obsolescence notice, so it is safe to specify for new designs and production BOMs. The part is ROHS3 compliant. If a replacement is ever needed, the Excelon-LP family includes higher-density or higher-speed siblings, but no direct pin-compatible replacement exists today — the 1.8V-only supply and 8 Mbit density are distinctive.
Tray packaging – design-in note
This part ships in a tray, not tape-and-reel. For high-volume pick-and-place, verify that your feeder setup accepts trays or request a reeled variant from the Excelon-LP family if one exists. The 8-UQFN / 8-GQFN footprint is standard and compatible with typical SPI FRAM layouts.