The 7Semi 4Kbit 20MHz SPI FRAM Breakout Board is a compact, high-endurance non-volatile memory module built around the Infineon FM25L04B Ferroelectric Random Access Memory (FRAM) IC. It provides 4Kbit (512 bytes) of memory with high-speed SPI communication up to 20MHz, making it suitable for frequent data logging, configuration storage, event recording, and embedded applications requiring fast and reliable data storage.
Unlike conventional EEPROM and Flash memory, FRAM enables immediate read and write operations without erase cycles or write-completion delays. With an endurance rating of 100 trillion (10¹⁴) read/write cycles and a data retention rating of 151 years at 65 C, the module provides reliable non-volatile storage for applications involving frequent memory updates.
The breakout board features accessible 3V3, GND, SCK, MOSI, MISO, and CS pins for power supply and SPI communication, along with a dedicated Write Protect (WP) pin to help prevent unintended memory modification and a HOLD pin to temporarily suspend SPI communication. Its compact PCB design and two mounting holes simplify integration with Arduino, ESP32, STM32, Raspberry Pi, and other microcontroller platforms operating at compatible logic voltage levels.
Key Features
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4Kbit Non-Volatile FRAM Memory: Provides 512 bytes (512 × 8 bits) of persistent memory without requiring a backup battery.
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High-Speed SPI Communication: Supports clock frequencies up to 20MHz for fast memory read and write operations.
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Exceptional Read/Write Endurance: Rated for 100 trillion (10¹⁴) read/write cycles, making it suitable for frequent data updates.
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Instant Memory Writes: Performs write operations at SPI bus speed without EEPROM-style erase cycles or write-completion delays.
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Long-Term Data Retention: Provides 151 years of data retention at 65 C under manufacturer-specified conditions.
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Hardware and Software Write Protection: Features a dedicated active-LOW WP pin and software-controlled memory block protection.
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SPI HOLD Function: Dedicated active-LOW HOLD pin allows temporary suspension of an SPI transaction without deselecting the device.
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SPI Mode Compatibility: Supports SPI Mode 0 (CPOL=0, CPHA=0) and Mode 3 (CPOL=1, CPHA=1).
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Low-Power Operation: Features 200µA typical active current at 1MHz and 3µA typical standby current.
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3.3V-Compatible Operation: Operates from a 2.7V to 3.6V supply range, suitable for compatible 3.3V microcontroller systems.
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Accessible 8-Pin Interface: Clearly labeled 3V3, GND, SCK, MOSI, MISO, CS, WP, and HOLD connections simplify wiring and integration.
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Compact Breakout Design: Features a small PCB footprint with two mounting holes for embedded and industrial applications.
Product includes
1x 7Semi SPI FRAM breakout board
2.54mm pitch pin headder strip
- Category of product:
- FRAM Memory breakout
- Memory IC:
- Infineon FM25L04B-GTR
- Memory Type:
- Ferroelectric RAM (FRAM)
- Memory Capacity:
- 4 Kbit (512 Bytes)
- Memory Organization:
- 512 × 8 bits
- Communication Interface:
- SPI
- _resources_dxf_file:
- https://7semi.com/content/3d-files/dfx_step/10569.dxf
- _resources_step_file:
- https://7semi.com/content/3d-files/dfx_step/10569.STEP
- _resources_datasheet:
- https://7semi.com/content/datasheets/datasheet_FM25L04B.pdf
- _summary:
- SPI Based FRAM Breakout with 4KB storage & compact layout
- Maximum SPI Clock Frequency:
- 20 MHz
- Supported SPI Modes:
- Mode 0 and Mode 3
- Operating Voltage:
- 2.7–3.6 V DC
- Read/Write Endurance:
- 10¹⁴ Cycles
- Hardware Write Protection:
- WP Pin (Active LOW)
- HOLD Function:
- Hold SPI Communication (Active LOW)
- Operating Temperature:
- −40 C to +85 C
- Board dimensions (L x W x H):
- 21 x 13 x 3 mm
- _3d_glb:
- https://7semi.com/content/3d-files/10569.glb
