CY15B104Q-SXI Cypress Semiconductor Integrated Circuit (Small Outline Packages) In Stock
Cypress CY15B104Q-SXI is a 4 Mbit (512 KB) Serial SPI Ferroelectric RAM (F-RAM) with 2 V to 3.6 V supply range in an 8-pin SOIC package. Delivers unlimited read/write endurance, 100-year data retention, and up to 40 MHz SPI clock speed. Available from stock worldwide with same-day shipping.
- Manufacturer
- Cypress Semiconductor
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- CY15B104Q-SXI Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $12.7400(MOQ 5)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of CY15B104Q-SXI?
- 4 Mbit (512 KB) F-RAM with unlimited read/write endurance — no wear-leveling required unlike Flash or EEPROM
- Up to 40 MHz SPI interface operating from 2 V to 3.6 V supply, enabling fast non-volatile data logging in low-power systems
- 100-year data retention with byte-level write granularity in a compact 8-pin SOIC package rated -40 °C to +85 °C
What is CY15B104Q-SXI used for?
The CY15B104Q-SXI is well-suited for industrial IoT data loggers, smart meters, and wearable medical devices where rapid, frequent non-volatile writes to 512 KB of storage are required without wear-out risk. Its 2 V to 3.6 V supply range makes it directly compatible with ARM Cortex-M microcontroller SPI buses running at 3.3 V. The 8-pin SOIC footprint simplifies PCB layout in space-constrained embedded designs needing reliable data persistence across power cycles.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the CY15B104Q-SXI datasheet?
CY15B104Q-SXI Datasheet DownloadOfficial datasheet from Cypress Semiconductor
What are equivalent replacements for CY15B104Q-SXI?
Compatible alternatives and drop-in replacements for CY15B104Q-SXI:
suggested
suggested
suggested
suggested
Frequently Asked Questions
How does the write endurance of CY15B104Q-SXI compare to standard SPI Flash memory?
The CY15B104Q-SXI provides unlimited write endurance due to its F-RAM (Ferroelectric RAM) technology, compared to typical SPI Flash devices limited to 100,000 erase/write cycles per sector. This makes it ideal for applications that write data continuously at up to 40 MHz SPI clock speed without requiring wear-leveling algorithms.
What supply voltage range and SPI clock speed does the CY15B104Q-SXI support?
The CY15B104Q-SXI operates from a 2 V to 3.6 V supply voltage and supports SPI clock speeds up to 40 MHz. It is compatible with standard SPI Modes 0 and 3, making it a drop-in upgrade for SPI EEPROM or Flash memory designs in 3.3 V microcontroller systems requiring 512 KB of non-volatile storage.
Which embedded applications benefit most from the CY15B104Q-SXI 4 Mbit F-RAM?
Industrial data loggers, smart energy meters, and automotive black-box recorders benefit most because the CY15B104Q-SXI writes 512 KB of data at byte-level granularity with no erase cycle, enabling sustained logging at up to 40 MHz SPI. The -40 °C to +85 °C operating range and 100-year data retention guarantee reliable operation in harsh field environments.
Is the CY15B104Q-SXI a pin-compatible replacement for SPI EEPROM devices in 8-pin SOIC packages?
Yes, the CY15B104Q-SXI in the 8-pin SOIC package is pin-compatible with many standard SPI EEPROM devices and offers a significantly larger 512 KB (4 Mbit) storage capacity. Its unlimited write endurance and 40 MHz SPI speed make it a direct upgrade for designs using slower EEPROMs with 1 million cycle endurance limits.
Related Guides
STM32H725IGT3 Selection Guide: Memory, Package, Temperature, and Supply
Choose the right STM32H725 variant by comparing Flash, package, pin count, temperature grade, connectivity, and production requirements.
Aug 1, 2026
STM32H725IGT3 High-Performance MCU Design Guide
Design STM32H725IGT3 systems for reliable 550 MHz operation with practical power, clock, cache, DMA, PCB, ADC, and recovery guidance.
Jul 31, 2026
150141VS73100 Violet SMD LED Selection Guide: Color, Drive, and Sourcing
Select the 150141VS73100 by wavelength, brightness, drive current, 3528 fit, reliability, and traceable sourcing requirements.
Jul 31, 2026
STEF05SGR 5 V eFuse Protection Design Guide
Design a reliable 5 V STEF05SGR eFuse stage with current-limit math, capacitor sizing, thermal analysis, fault recovery, and PCB layout guidance.
Jul 30, 2026
Why Buy from FindMyChip
About Cypress Semiconductor
Cypress Semiconductor is a leading electronic component manufacturer. FindMyChip sources Cypress Semiconductor ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
More from Cypress Semiconductor
CY62256VNLL-70ZXCT
Small Outline Packages
Integrated Circuit
CY7C1051DV33-10ZSXI
Small Outline Packages
Integrated Circuit
FM25V02A-DG
Small Outline No-lead
Integrated Circuit
FM25V02A-G
SOT23 (8-Pin)
Integrated Circuit
CY8C21323-24PVXI
Small Outline Packages
Integrated Circuit
CY8C4248BZI-L489
BGA
Integrated Circuit
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 5+ | $60.0000 | $300.00 |
| 50+ | $24.3616 | $1218.08 |
| 94+ | $22.3300 | $2099.02 |
| 500+ | $17.2400 | $8620.00 |
| 889+ | $12.7400 | $11325.86 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“We've been using FindMyChip for 2 years. Pricing is consistently 20-30% below Mouser/DigiKey for volume orders.”
You May Also Like
ACS770ECB-200U-PFF-T
Allegro Microsystems
Integrated Circuit
ACS770KCB-150U-PFF-T
Allegro Microsystems
Integrated Circuit
MC33901WEF
NXP
Integrated Circuit
MC7808BDTRKG
ON Semiconductor
Integrated Circuit
PA94EC
Apex Microtechnology
Integrated Circuit
AP7315-28SR-7
Diodes Inc.
Integrated Circuit
74HCT245D
Nexperia
Integrated Circuit
EPM7032AETC44-4N
Intel
Integrated Circuit
EPM3512AQC208-10N
Intel
Integrated Circuit
EPM3256ATC144-7N
Intel
Integrated Circuit
EPM3256AQC208-7N
Intel
Integrated Circuit
EPM3256AQC208-10N
Intel
Integrated Circuit
EPM3128ATC100-7N
Intel
Integrated Circuit
EPM1270F256C4N
Intel
Integrated Circuit
EPF8282ATC100-4N
Intel
Integrated Circuit
EPF6016QC208-2N
Intel
Integrated Circuit
EPF6016ATC144-3N
Intel
Integrated Circuit
EPF10K30ATC144-3N
Intel
Integrated Circuit
EPC2TI32N
Intel
Integrated Circuit
EPC2LC20
Intel
Integrated Circuit
EP3SL150F1152C4N
Intel
Integrated Circuit
EP2SGX60DF780C5N
Intel
Integrated Circuit
EP2SGX60CF780C5N
Intel
Integrated Circuit
EP2SGX30DF780C3N
Intel
Integrated Circuit