Infineon Technologies CY14V104LA-BA25XIT

Overview

CY14V104LA-BA25XIT from Infineon Technologies (formerly Cypress) is a 4-Mbit non-volatile SRAM organized as 512 K × 8, featuring QuantumTrap® technology for automatic STORE on power-down, 25 ns access time, 3.0–3.6 V core supply, and industrial temperature operation. It serves as a drop-in SRAM replacement in systems requiring persistent data retention without external backup power or battery.

For engineers reviewing the CY14V104LA-BA25XIT datasheet, CY14V104LA-BA25XIT pinout, CY14V104LA-BA25XIT application, or CY14V104LA-BA25XIT equivalent, key selection criteria include AutoStore capacitor sizing (0.1 µF), HSB-controlled hardware STORE timing (tDELAY = 100 ns), VCAP voltage regulation, and ×8 vs ×16 configuration compatibility with existing memory bus layouts.

Technical Context

This nvSRAM integrates standard fast SRAM with parallel-connected QuantumTrap non-volatile storage cells per bit. Each cell supports infinite SRAM read/write cycles and up to 1 million STORE operations, with 20-year data retention at industrial temperatures (–40°C to +85°C).

STORE is triggered automatically at power-down via VCAP-supplied energy, or manually via HSB pin assertion or software address sequence. RECALL occurs automatically on power-up or via software command. The device inhibits SRAM access during STORE/RECALL and uses HSB as both control input and busy indicator with open-drain output and internal 100 kΩ pull-up.

Key Specifications

Pinout & Package

48-ball fine-pitch ball grid array (FBGA) package, 6 × 8 array, 0.8 mm pitch, RoHS-compliant, lead-free finish. Package code "BA" denotes this FBGA variant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STK14C88-3AJ5F and FM24V04-G, CY14V104LA-BA25XIT uniquely delivers parallel ×8 SRAM timing, integrated VCAP regulation, and guaranteed 20-year retention across –40°C to +85°C - making it optimal for industrial control and metering where deterministic power-loss behavior is mandated.

Availability

CY14V104LA-BA25XIT is available at Aetrix Electronics and suitable for industrial data loggers, programmable logic controllers, smart electricity meters, and railway signaling controllers requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for CY14V104LA-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, specializing in power management, automotive, industrial, and security solutions.

CY14V104LA-BA25XIT belongs to Infineon's nvSRAM product line, designed specifically for industrial and infrastructure applications demanding zero-battery, high-reliability, parallel-interface non-volatile memory with deterministic power-loss recovery.

FAQ

What is the minimum VCAP capacitor value required for reliable AutoStore?

The datasheet specifies a 0.1 µF ceramic capacitor on VCAP, rated for ≥10 V and placed within 5 mm of the FBGA pad. Using a smaller value risks incomplete STORE during rapid VCC collapse; larger values extend STORE window but increase power-up stabilization time. X7R dielectric is recommended for temperature stability across –40°C to +85°C.

Can CY14V104LA-BA25XIT operate with VCCQ = 1.8 V while VCC = 3.3 V?

Yes - VCCQ must be between 1.65 V and 1.95 V, and 1.8 V falls within specification. This allows direct interfacing with 1.8 V microcontrollers or FPGAs without level shifters. However, VCCQ must be powered before or simultaneously with VCC to prevent I/O latch-up; sequencing violations may cause permanent damage.

How does the device prevent unintended STORE during normal operation?

The device implements a write-latch mechanism: AutoStore and hardware STORE are ignored unless at least one valid SRAM write has occurred since the last STORE or RECALL. This prevents spurious stores from noise or floating control lines. Software STORE bypasses this guard and executes unconditionally upon correct address sequence detection.

Is the HSB pin mandatory for system integration?

No - HSB is optional. If unused, it must be left unconnected (not tied HIGH or LOW). When implemented, it provides precise STORE initiation timing and real-time busy indication. Leaving it unconnected disables hardware STORE but preserves AutoStore and software STORE functionality, simplifying designs where deterministic shutdown control is not required.