Infineon Technologies CY15B102Q-SXAT

Overview

CY15B102Q-SXAT from Infineon Technologies (formerly Cypress) is a 2-Mbit serial SPI F-RAM organized as 256K × 8, operating at up to 40 MHz with 2.0–3.6 V supply, –40 °C to +85 °C automotive-A rating, and 10¹⁴ read/write endurance. It serves as nonvolatile memory in real-time data logging systems where deterministic write latency and high-cycle reliability are critical.

For engineers reviewing the CY15B102Q-SXAT datasheet, CY15B102Q-SXAT pinout, CY15B102Q-SXAT application, or CY15B102Q-SXAT equivalent, key selection criteria include NoDelay™ write capability, SPI mode 0/3 compatibility, hardware/software write protection, 3 µA sleep current, and SOIC-8 automotive qualification.

Technical Context

The CY15B102Q-SXAT implements a ferroelectric memory array with zero-write-latency architecture: writes complete synchronously with SPI bus transfer-no polling or erase cycles required. Its internal logic decodes standard SPI opcodes (e.g., WREN, READ, FAST_READ) and manages a 3-byte address space (18-bit effective) with upper 6 bits masked.

It integrates a nonvolatile status register controlling block protection (1/4, 1/2, full array), WPEN bit enabling hardware write protection via the WP pin, and Device ID registers returning manufacturer and product identifiers. All timing and voltage specifications are guaranteed across the full Automotive-A temperature range.

Key Specifications

Pinout & Package

8-pin Small Outline Integrated Circuit (SOIC) package, RoHS-compliant, body width 3.9 mm, lead pitch 1.27 mm, moisture sensitivity level (MSL) 3.

Key Features

Applications

Equivalent & Alternatives

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

Compared with FM25V02A-G and AT25DF021A-SSH-T, CY15B102Q-SXAT uniquely delivers automotive-grade reliability, 40 MHz deterministic writes, and integrated HOLD/SO/WP functionality-making it the only option for safety-critical, high-cycle, low-latency logging in AEC-Q100 systems.

Availability

CY15B102Q-SXAT is available at Aetrix Electronics and suitable for automotive telematics, industrial PLCs, medical infusion pumps, and smart metering applications requiring stable component supply, long-term lifecycle support, and AEC-Q100 compliance.

Supply support for CY15B102Q-SXAT 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

Infineon Technologies is a global semiconductor leader headquartered in Munich, Germany, specializing in power systems, sensors, and automotive ICs with strong emphasis on functional safety and reliability.

CY15B102Q-SXAT belongs to Infineon's F-RAM portfolio, designed specifically for mission-critical nonvolatile data logging where write speed, endurance, and automotive qualification outweigh cost-per-bit considerations.

FAQ

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

Yes-CY15B102Q-SXAT uses identical SOIC-8 pinout and standard SPI command set (READ, WRITE, WREN, etc.), enabling drop-in replacement without PCB redesign. However, its NoDelay™ writes eliminate need for status polling, simplifying firmware integration versus flash/EEPROM.

Does CY15B102Q-SXAT require external high-voltage programming circuitry?

No-CY15B102Q-SXAT performs all writes at standard VDD levels (2.0–3.6 V) with no charge pumps or elevated voltages. This eliminates external HV generators, reduces EMI, and improves system-level reliability compared to EEPROM and flash.

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

When HOLD is pulled 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. The transaction resumes on next SCK edge after HOLD returns HIGH-no reinitialization needed.

What is the significance of the "-SXAT" suffix in CY15B102Q-SXAT?

The "-SXAT" suffix denotes Infineon's automotive-grade variant: "S" = SOIC-8, "X" = extended temperature (–40 °C to +85 °C), "A" = AEC-Q100 qualified, "T" = tape-and-reel packaging. It confirms full compliance with Automotive-A reliability and test requirements.