Infineon Technologies CY14B108L-ZS45XIT

Overview

CY14B108L-ZS45XIT from Cypress Semiconductor is an 8-Mbit nonvolatile SRAM (nvSRAM) with QuantumTrap technology, organized as 1024 K × 8, 45 ns access time, single 3 V (+20% / –10%) supply, industrial temperature range (–40°C to +85°C), and FBGA-48 package. It performs automatic STORE on power-down using a VCAP capacitor and supports software/hardware-initiated STORE/RECALL for data retention in mission-critical logging and control systems.

For engineers reviewing the CY14B108L-ZS45XIT datasheet, CY14B108L-ZS45XIT pinout, CY14B108L-ZS45XIT application, or CY14B108L-ZS45XIT equivalent, key selection criteria include AutoStore reliability under brown-out conditions, HSB-driven hardware STORE timing, VCAP capacitor sizing (0.1 µF), and compatibility with ×8 bus interfaces in industrial PLCs and medical data recorders.

Technical Context

This nvSRAM integrates standard SRAM cells with parallel QuantumTrap nonvolatile elements per cell, enabling simultaneous STORE/RECALL across all 8 Mbits. It operates in ×8 mode only (A0–A19, DQ0–DQ7), with no ×16 support - confirmed by part suffix "L" and pinout diagrams showing BHE/ BLE absent in FBGA-48 layout.

STORE is triggered by VCC drop below VSWITCH (2.7 V min), initiating autonomous transfer from SRAM to QuantumTrap using charge stored on VCAP; RECALL occurs automatically at power-up. The HSB pin serves dual role: open-drain status indicator (LOW during STORE) and hardware trigger input (driven LOW externally to initiate STORE).

Key Specifications

Pinout & Package

Package: 48-ball fine-pitch ball grid array (FBGA), RoHS-compliant, 6 mm × 8 mm footprint, 0.5 mm pitch.

Key Features

Applications

Equivalent & Alternatives

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

Compared with FM24V01A-G and AS108-045K, CY14B108L-ZS45XIT uniquely delivers 8-Mbit density in FBGA-48 with integrated HSB-triggered STORE and VCAP-based AutoStore - essential for space-constrained, high-reliability industrial controllers requiring deterministic power-loss response.

Availability

CY14B108L-ZS45XIT is available at Aetrix Electronics and suitable for industrial data loggers, medical patient monitors, and programmable logic controllers requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for CY14B108L-ZS45XIT 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

Cypress Semiconductor (now part of Infineon Technologies) designs high-reliability memory and programmable solutions for industrial, automotive, and communications markets.

CY14B108L belongs to Cypress's QuantumTrap nvSRAM product line, engineered specifically for zero-battery, fail-safe data retention in systems where power interruptions are frequent and data integrity is non-negotiable.

FAQ

Is CY14B108L-ZS45XIT pin-compatible with CY14B108N?

No. CY14B108L is ×8-organized (A0–A19, DQ0–DQ7) and uses FBGA-48; CY14B108N is ×16-organized (A0–A18, DQ0–DQ15) with BHE/ BLE pins and TSOP-54/FBGA-48 variants. Pinouts differ fundamentally - address count, data width, and byte-enable signals are incompatible.

What happens if the VCAP capacitor is omitted?

Omitting the 0.1 µF VCAP capacitor disables AutoStore. If AutoStore remains enabled (default), the device attempts STORE during power loss without energy reserve, causing incomplete write and corrupted nonvolatile data. The datasheet mandates disabling AutoStore via software sequence if VCAP is not installed.

Can HSB be left unconnected in systems that only use software STORE?

Yes. HSB may be left floating if hardware STORE and AutoStore status monitoring are unused. The internal 100 kΩ weak pull-up ensures HSB remains HIGH during idle; no external pull-up is required unless used as an input for STORE triggering.

Does CY14B108L-ZS45XIT support 1.8 V or 2.5 V operation?

No. It is specified exclusively for 3.0 V ±10% (2.7 V to 3.3 V). Operation outside this range violates DC characteristics: VSWITCH = 2.7 V minimum, and internal regulators require ≥2.7 V to charge VCAP and sustain STORE. Lower voltages cause premature AutoStore failure or RECALL corruption.