Infineon Technologies CY14B101Q2-LHXIT

Overview

CY14B101Q2-LHXIT from Infineon Technologies (formerly Cypress) is a 1-Mbit serial SPI nonvolatile SRAM (nvSRAM), internally organized as 128K × 8, featuring AutoStore on power-down, Hardware STORE via HSB pin, and Power-Up RECALL. It operates at 40 MHz SPI clock rate, supports SPI modes 0 and 3, and uses QuantumTrap nonvolatile technology for 20-year data retention with 1 million STORE cycles. It is deployed in industrial control systems requiring instant, reliable, zero-delay memory backup during brownout events.

For engineers reviewing the CY14B101Q2-LHXIT datasheet, CY14B101Q2-LHXIT pinout, CY14B101Q2-LHXIT application, or CY14B101Q2-LHXIT equivalent, key selection criteria include AutoStore capacitor support (VCAP pin), absence of WP pin, HSB-driven hardware STORE capability, and compatibility with 16-pin SOIC footprint in industrial temperature-grade embedded systems.

Technical Context

The CY14B101Q2 integrates SRAM and QuantumTrap nonvolatile storage per cell, enabling infinite SRAM read/write cycles while preserving data across power loss. Its STORE operation-triggered automatically on VCC drop (using external VCAP capacitor), by SPI STORE instruction, or by pulling HSB low-performs erase-then-program to SONOS-based nonvolatile elements.

RECALL restores data from QuantumTrap cells to SRAM on power-up or via SPI command. The device functions as an SPI slave supporting modes 0 and 3, with zero-cycle-delay reads/writes, HOLD pin suspension, and status monitoring via HSB pin and RDY bit in the Status Register.

Key Specifications

Pinout & Package

Package: 16-pin Small Outline Integrated Circuit (SOIC), RoHS-compliant, industrial temperature grade (–40°C to +85°C). Exposed pad not present in SOIC variant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY14B101Q3-LHXIT, CY14B101Q2-LHXIT trades WP pin functionality for reduced pin count and simplified board routing, while retaining VCAP-backed AutoStore and HSB-triggered STORE-making it optimal for space-constrained industrial nodes where write protection is managed in software.

Availability

CY14B101Q2-LHXIT is available at Aetrix Electronics and suitable for industrial PLCs, medical infusion devices, and automotive ADAS recorders requiring stable component supply, long-term lifecycle support, and RoHS-compliant 16-pin SOIC packaging.

Supply support for CY14B101Q2-LHXIT 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, sensing, connectivity, and security solutions for industrial, automotive, and IoT markets.

CY14B101Q2 belongs to Infineon's nvSRAM product line, designed specifically for mission-critical applications demanding instantaneous, battery-free nonvolatile data preservation during uncontrolled power loss.

FAQ

What is the function of the VCAP pin on CY14B101Q2-LHXIT?

The VCAP pin connects to an external capacitor (typically 4.7 µF) that supplies energy during VCC collapse, enabling automatic STORE of SRAM contents to QuantumTrap nonvolatile cells. If AutoStore is unused, VCAP must be left unconnected-not tied to VSS-to prevent damage or malfunction.

Does CY14B101Q2-LHXIT support hardware write protection?

No. Unlike CY14B101Q3, the Q2 variant omits the WP (Write Protect) pin. Write protection is implemented exclusively via software instructions (WREN/WRDI) and status register block protection (BP0/BP1), making it suitable for designs where physical pin count reduction is prioritized over hardware-level lockout.

How does Hardware STORE differ from Software STORE on this device?

Hardware STORE is initiated by pulling the HSB pin LOW externally, bypassing SPI communication and offering deterministic sub-microsecond trigger latency. Software STORE requires issuing the STORE opcode via SPI, introducing bus arbitration delay but enabling precise firmware-controlled timing and conditional execution based on application state.

Can CY14B101Q2-LHXIT replace standard SPI EEPROMs in existing designs?

Yes, with layout and firmware adaptation: it matches common 16-pin SOIC EEPROM footprints, supports identical SPI opcodes for READ/WRITE, and adds STORE/RECALL commands. Key differences include zero-cycle-delay access, no endurance wear-out on writes, and mandatory VCAP for AutoStore-requiring minor schematic and initialization code updates.