Infineon Technologies CY14E101Q2A-SXIT

Overview

CY14E101Q2A-SXIT from Infineon Technologies (formerly Cypress) is a 1-Mbit serial SPI nonvolatile SRAM (nvSRAM), internally organized as 128K × 8, featuring QuantumTrap nonvolatile storage, AutoStore on power-down using VCAP capacitor, and 104 MHz fast-read SPI capability. It operates at 4.5–5.5 V, supports industrial temperature range (–40 °C to +85 °C), and delivers zero-cycle-delay reads/writes up to 40 MHz - used in industrial PLCs for real-time data logging with power-loss resilience.

For engineers reviewing the CY14E101Q2A-SXIT datasheet, CY14E101Q2A-SXIT pinout, CY14E101Q2A-SXIT application, or CY14E101Q2A-SXIT equivalent, key selection criteria include VCAP-supported AutoStore timing, HSB pin behavior during STORE/RECALL, SPI mode 0/3 compatibility, and 1/4–1/2–full array software block protection configuration.

Technical Context

This nvSRAM integrates SRAM and QuantumTrap SONOS-based nonvolatile elements per cell, enabling infinite SRAM write cycles while guaranteeing 1 million STORE cycles and 20-year data retention at 85 °C. STORE operations transfer data from SRAM to nonvolatile cells either automatically on power loss (via VCAP), via SPI instruction, or by asserting HSB low; RECALL restores data on power-up or via SPI command.

The device implements dual-speed SPI: standard READ/WRITE at ≤40 MHz with zero latency, and FAST_READ at up to 104 MHz using a dummy byte. It supports hardware write protection (WP pin absent in Q2A variant), software write disable, and configurable block protection via Status Register BP0/BP1 bits - all managed through dedicated SPI opcodes including STORE, RECALL, ASENB, and ASDISB.

Key Specifications

Pinout & Package

Package: 16-pin SOIC (Small Outline Integrated Circuit), RoHS-compliant, body width 7.5 mm, lead pitch 1.27 mm.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar nvSRAM applications.

Compared with CY14B101Q2A-SXIT, CY14E101Q2A-SXIT enables direct integration into 5 V industrial backplanes without regulators, while FM25V10-G trades deterministic nonvolatile commit for infinite write endurance - making CY14E101Q2A-SXIT optimal for safety-critical, power-unstable environments.

Availability

CY14E101Q2A-SXIT is available at Aetrix Electronics and suitable for industrial data loggers, motor drive controllers, smart electricity meters, and railway signaling modules requiring stable component supply, long-term lifecycle support, and RoHS-compliant 5 V nonvolatile memory.

Supply support for CY14E101Q2A-SXIT 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 management, automotive MCUs, and memory solutions - acquired Cypress Semiconductor in 2020 to strengthen its embedded connectivity and nonvolatile memory portfolio.

CY14E101Q2A-SXIT belongs to the nvSRAM product line designed specifically for industrial and infrastructure applications demanding deterministic, capacitor-backed nonvolatile storage without batteries or external controllers.

FAQ

What is the function of the VCAP pin, and what capacitor value is recommended?

The VCAP pin supplies energy to complete AutoStore during VCC dropout. A 4.7 µF ±20% X5R or X7R ceramic capacitor with ≤100 mΩ ESR is recommended and must be placed within 5 mm of the pin. Connecting VCAP to ground violates Absolute Maximum Ratings and may damage the device. No capacitor is needed if AutoStore is disabled via ASDISB instruction.

How does Hardware STORE differ from Software STORE in terms of timing and reliability?

Hardware STORE initiates immediately upon HSB pin falling edge and completes in 10–15 ms (typ.), independent of SPI bus state - ideal for hard real-time commit. Software STORE requires SPI transaction overhead (opcode + address), adding ~2 µs latency per byte, and is subject to bus arbitration delays. Both use identical QuantumTrap programming, ensuring equal data retention and endurance.

Can the CY14E101Q2A-SXIT operate in SPI mode 1 or 2, or only modes 0 and 3?

Only SPI modes 0 (CPOL=0, CPHA=0) and 3 (CPOL=1, CPHA=1) are supported, as confirmed in the Functional Description section of datasheet 001-54393 Rev. *N. Attempting mode 1 or 2 will result in misaligned sampling and corrupted data transfers - host firmware must configure the SPI peripheral accordingly before initialization.

Is the 8-byte serial number user-programmable, and how is it accessed?

The 8-byte serial number is factory-programmed and read-only; it cannot be modified. It is accessed via RDSN (Serial Number Read) instruction (0x4B) or FAST_RDSN (0x4C), returning bytes sequentially on SO. The serial number is unique per unit and used for traceability in medical and aerospace applications - no write instruction (WRSN) is supported for this field.