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CY15B256J-SXE

IFXCY15B256J-SXE

Infineon Technologies
FRAM (Ferroelectric RAM) Memory IC 256Kbit I2C 3.4 MHz 130 ns 8-SOIC
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Overview

The CY15B256J-SXE is a 256Kbit non-volatile ferroelectric RAM (F-RAM) designed for high-reliability applications requiring frequent data logging. Unlike standard EEPROM or Flash, F-RAM features near-infinite endurance and 'NoDelay' writes, allowing data to be captured at full bus speeds without soak times. This device is AEC-Q100 Grade 1 qualified, making it suitable for demanding automotive and industrial environments.

Why Choose This Part

This F-RAM offers 10^13 read/write cycles, vastly exceeding the endurance of traditional EEPROM. It operates across a wide voltage range of 2V to 3.6V and supports a high-speed I2C interface up to 3.4 MHz. The AEC-Q100 Grade 1 compliance ensures reliable operation in temperatures ranging from -40C to +125C.

Applications

Automotive Event Data Recorders
Reliably capturing sensor data immediately before a power loss or crash event without write-cycle delays.
Industrial Smart Meters
Continuous logging of energy consumption data where high endurance is required over a multi-decade service life.
Embedded System State Storage
Saving critical system parameters and configuration states frequently to ensure recovery after unexpected power cycles.
Robotic Calibration Data
Storing real-time positional offsets and motor calibration data that changes constantly during operation.

Key Specifications

Technology FRAM (Ferroelectric RAM)
Access Time 130 ns
Memory Size 256Kbit
Memory Type Non-Volatile
Memory Format FRAM
Mounting Type Surface Mount
Package / Case 8-SOIC (0.154", 3.90mm Width)
Clock Frequency 3.4 MHz
Memory Interface I2C
Voltage - Supply 2V ~ 3.6V
Memory Organization 32K x 8
Operating Temperature -40degC ~ 125degC (TA)
Supplier Device Package 8-SOIC

Getting Started

To interface with the CY15B256J-SXE, use a standard I2C controller and pull-up resistors on the SDA and SCL lines. Since it functions like a standard I2C EEPROM but without the need for write-polling or 'wait' states, existing I2C drivers can often be used with the timing delays removed. For development, ensure the I2C bus master supports High-Speed mode if 3.4 MHz operation is required.

Also Consider

FM24V02A-G IFXInfineon Technologies - A standard industrial grade 256Kbit I2C F-RAM for applications that do not require automotive AEC-Q100 qualification.

Categories

Memory & Storage > FRAM Automotive > ADAS & Autonomous Driving