Infineon Technologies CY14V104NA-BA25XIT

Overview

CY14V104NA-BA25XIT from Infineon Technologies (formerly Cypress) is a 4-Mbit non-volatile SRAM organized as 256 K × 16, featuring QuantumTrap technology for automatic STORE on power-down, software/hardware-controlled STORE/RECALL, 25 ns access time, and industrial temperature operation in a 48-ball FBGA package. It serves as drop-in SRAM replacement in systems requiring persistent data retention without external backup power.

For engineers reviewing the CY14V104NA-BA25XIT datasheet, CY14V104NA-BA25XIT pinout, CY14V104NA-BA25XIT application, or CY14V104NA-BA25XIT equivalent, key selection criteria include ×16 bus interface support, VCAP-based AutoStore timing, HSB-driven hardware store control, BHE/ BLE byte enable handling, and compatibility with 1.8 V I/O and 3.3 V core voltage rails.

Technical Context

This nvSRAM integrates parallel SRAM and QuantumTrap non-volatile storage per cell, enabling simultaneous STORE/RECALL across all 256 K words. It supports three STORE initiation modes: AutoStore triggered by VCC drop below VSWITCH (2.7 V), hardware STORE via HSB pin assertion, and software STORE via six-address read sequence.

RECALL occurs automatically at power-up or can be initiated by software. The device enforces write-before-store logic: AutoStore and hardware STORE are suppressed unless at least one SRAM write has occurred since last RECALL or STORE. HSB functions as both input (to request STORE) and open-drain output (to indicate busy status during STORE/RECALL).

Key Specifications

Pinout & Package

Package: 48-ball fine-pitch ball grid array (FBGA), 6 mm × 8 mm, 0.8 mm pitch, RoHS-compliant, lead-free.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar non-volatile SRAM applications.

Compared with FM24V10-G and MB85RS4MT, CY14V104NA-BA25XIT uniquely delivers hands-off AutoStore using only VCAP, full SRAM timing compatibility, and dual-mode (hardware/software) STORE control - making it optimal for legacy SRAM drop-in upgrades requiring zero firmware or board changes.

Availability

CY14V104NA-BA25XIT is available at Aetrix Electronics and suitable for industrial PLC data logging, medical device parameter storage, automotive ADAS event recorders, and telecom base station configuration requiring stable component supply and long-term lifecycle support.

Supply support for CY14V104NA-BA25XIT 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, delivering power systems, sensors, microcontrollers, and memory solutions for industrial, automotive, and IoT applications.

CY14V104NA belongs to Infineon's nvSRAM product line, designed specifically to replace battery-backed SRAM in mission-critical systems where reliability, data integrity, and regulatory compliance outweigh cost-per-bit considerations.

FAQ

What is the minimum VCAP capacitance required for reliable AutoStore operation?

The datasheet specifies a nominal 0.1 µF ceramic capacitor on VCAP, rated for ≥10 V, placed within 5 mm of the device. This value ensures sufficient energy to complete one STORE cycle when VCC drops from 3.0 V to VSWITCH (2.7 V). Larger values extend margin but do not improve functionality; smaller values risk incomplete STORE and data corruption.

Can CY14V104NA-BA25XIT operate with VCCQ = 1.8 V and VCC = 3.3 V simultaneously?

Yes - the device is explicitly characterized for independent 1.65–1.95 V I/O supply (VCCQ) and 3.0–3.6 V core supply (VCC). This dual-rail architecture allows direct interfacing with 1.8 V microcontrollers while maintaining robust internal SRAM operation at 3.3 V, eliminating level-shifter requirements in mixed-voltage designs.

How does the write-before-store logic affect real-time data logging?

This logic prevents unintended STOREs during idle periods or read-only operation. For continuous logging, at least one write must occur before power loss to activate AutoStore. Firmware should perform a dummy write (e.g., incrementing a counter) after each valid data update to ensure STORE eligibility - adding negligible overhead versus unconditional STORE execution.

Is the HSB pin mandatory for system integration?

No - HSB is optional. If unused, it may be left unconnected. However, monitoring HSB provides precise STORE/RECALL completion timing (tHRECALL = 10 ms max), enabling firmware to resume operations safely. Omitting HSB requires fixed delay-based synchronization, increasing worst-case boot time and reducing determinism in time-critical applications.