Infineon Technologies CY14V104NA-BA45XI

Overview

CY14V104NA-BA45XI from Infineon Technologies (formerly Cypress) is a 4-Mbit non-volatile SRAM organized as 256 K × 16, featuring QuantumTrap™ non-volatile storage, 45 ns access time, 3.0–3.6 V core supply, and industrial temperature range (–40°C to +85°C). It performs automatic STORE on power-down using an external VCAP capacitor and supports software/hardware-initiated STORE/RECALL operations - deployed in industrial PLCs, medical data loggers, and telecom base station control memory where power-fail resilience is critical.

For engineers reviewing the CY14V104NA-BA45XI datasheet, CY14V104NA-BA45XI pinout, CY14V104NA-BA45XI application, or CY14V104NA-BA45XI equivalent, key selection considerations include ×16 bus interface compatibility, VCAP-based AutoStore timing margin, HSB-driven hardware store synchronization, and BHE/BLE byte enable behavior in 16-bit systems.

Technical Context

This nvSRAM integrates standard SRAM cells with parallel QuantumTrap non-volatile elements per cell, enabling simultaneous STORE/RECALL across all 256 K words without block erasure. The architecture decouples volatile read/write performance (infinite cycles) from non-volatile endurance (1 million STOREs, 20-year retention).

STORE is triggered by three independent mechanisms: AutoStore on VCC drop below VSWITCH (using charge from VCAP), hardware STORE via HSB pin assertion, or software STORE via six-address sequence. RECALL occurs automatically at power-up or via software command, with HSB signaling busy status during both operations.

Key Specifications

Pinout & Package

48-ball fine-pitch ball grid array (FBGA) package, 6 mm × 8 mm body, 0.8 mm pitch, RoHS-compliant, lead-free finish. Pinout optimized for ×16 operation with dedicated BHE/BLE controls and dual VCCQ supplies for I/O domain isolation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY14V104LA-BA45XI, the CY14V104NA-BA45XI delivers higher bandwidth via 16-bit interface and reduces address bus width by one line, while FM24V04-G trades speed and voltage-margin robustness for infinite endurance and simpler power design - choice depends on bus width, timing budget, and failure-mode priorities.

Availability

CY14V104NA-BA45XI is available at Aetrix Electronics and suitable for industrial automation controllers, medical data loggers, telecom infrastructure units, and automotive ADAS modules requiring stable component supply with guaranteed long-term lifecycle support.

Supply support for CY14V104NA-BA45XI 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 - formed through acquisition of Cypress Semiconductor in 2020.

CY14V104NA belongs to Infineon's nvSRAM product line, engineered specifically for mission-critical applications demanding instantaneous, deterministic non-volatile storage without batteries or external controllers.

FAQ

Is a VCAP capacitor mandatory for CY14V104NA-BA45XI operation?

Yes - a minimum 0.1 µF ceramic capacitor must be connected between VCAP and VSS to enable AutoStore. Without it, power-loss STORE fails, risking data corruption. The device draws charge from VCC during normal operation to pre-charge VCAP; no external charging circuitry is needed.

Can CY14V104NA-BA45XI operate with VCC = 3.3 V and VCCQ = 1.8 V simultaneously?

Yes - the device is explicitly rated for VCC = 3.0–3.6 V and VCCQ = 1.65–1.95 V. This dual-rail design allows clean separation of core logic (3.3 V) and I/O interface (1.8 V), reducing noise coupling and enabling direct connection to 1.8 V FPGAs or application processors.

What happens if HSB is left unconnected during normal operation?

HSB may float HIGH due to its internal 100 kΩ pull-up resistor, which is acceptable if hardware STORE is unused. However, for reliable operation, tie HSB to VCCQ via a 10 kΩ resistor if not actively driven - prevents noise-induced false STORE triggers during ESD events or board-level transients.

Does software STORE require the device to be in a specific state before execution?

Yes - software STORE requires CE to be asserted and six consecutive read cycles executed at exact addresses (0x0000, 0x0001, 0x0002, 0x0003, 0x0004, 0x0005) within tSSW (max 100 ns) of each other. No prior wait-state or register setup is needed, but the sequence must be uninterrupted by CE deassertion or bus contention.