Infineon Technologies CY15B102Q-SXE

Overview

CY15B102Q-SXE from Cypress Semiconductor is a 2-Mbit (256 K × 8) serial SPI F-RAM nonvolatile memory IC for automotive applications, featuring 10¹³ read/write endurance, 121-year data retention, NoDelay™ write capability, and AEC-Q100 Grade 1 qualification. It operates across –40 °C to +125 °C with 2.0–3.6 V supply and replaces serial flash/EEPROM in real-time data logging systems.

For engineers reviewing the CY15B102Q-SXE datasheet, CY15B102Q-SXE pinout, CY15B102Q-SXE application, or CY15B102Q-SXE equivalent, key selection criteria include SPI mode 0/3 compatibility, hardware/software write protection, 25 MHz max clock speed, low-power sleep mode (20 µA), and automotive-grade thermal reliability.

Technical Context

The CY15B102Q-SXE implements a ferroelectric memory array with zero-latency writes-data commits immediately after each byte transfer without polling or erase cycles. Its SPI interface supports dual modes (0 and 3), with inputs latched on SCK rising edge and outputs driven on falling edge.

Write protection is enforced via dedicated WP pin (hardware) and status register bits (software block protection for 1/4, 1/2, or full array). The device includes a read-only Device ID register returning manufacturer and product identifiers, and enters tristate output and standby mode when CS is high.

Key Specifications

Pinout & Package

8-pin small outline integrated circuit (SOIC) package with standard gull-wing lead form, 1.27 mm pitch, and RoHS-compliant finish.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar serial nonvolatile memory applications.

Compared with AT25DF021A-SSH-T and BR25H256FJ-WE2, the CY15B102Q-SXE uniquely delivers simultaneous high density, ultra-high endurance, and true zero-latency writes-making it the only viable option for automotive data recorders requiring deterministic sub-millisecond write commit under thermal and voltage stress.

Availability

CY15B102Q-SXE is available at Aetrix Electronics and suitable for telematics event logging, ADAS sensor calibration storage, and ECU fault history recording requiring stable component supply across automotive production lifecycles.

Supply support for CY15B102Q-SXE includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Cypress Semiconductor (now part of Infineon Technologies) designs high-reliability semiconductor solutions for automotive, industrial, and IoT applications, with emphasis on nonvolatile memory and programmable systems.

The CY15B102Q-SXE belongs to Cypress's automotive F-RAM product line, engineered specifically to replace serial flash and EEPROM in mission-critical automotive subsystems demanding rapid, reliable, and low-power nonvolatile writes.

FAQ

Is CY15B102Q-SXE pin-compatible with standard 8-pin SOIC SPI flash or EEPROM devices?

Yes-CY15B102Q-SXE uses identical 8-pin SOIC footprint and SPI signal mapping (CS, SCK, SI, SO, WP, HOLD, VDD, VSS), enabling direct PCB-level replacement of serial flash and EEPROM without layout changes. Signal timing and voltage levels comply with JEDEC-standard SPI interfaces.

Does CY15B102Q-SXE require external high-voltage programming or special write sequences?

No-CY15B102Q-SXE performs writes at standard VDD (2.0–3.6 V) with no charge pumps or high-voltage generators. A single SPI write command transfers data directly to the F-RAM array; no erase cycles, no write-enable polling, and no delay between successive bytes are needed.

How does the HOLD pin function during an active SPI transaction?

When HOLD is asserted low during any SPI operation (read, write, or status access), the device suspends communication immediately, holds SCK and data lines stable, and retains internal state. Once HOLD returns high (with SCK low), the transaction resumes from the exact bit position where it paused-no reinitialization required.

What is the significance of the Device ID (0x015B10) returned by CY15B102Q-SXE?

The Device ID comprises Manufacturer ID 0x01 (Cypress) and Product ID 0x5B10, confirming silicon revision and memory density. Firmware uses this value during boot to validate correct part installation, detect counterfeit units, and select optimized driver configurations for F-RAM-specific timing and protection features.