Infineon Technologies CY14B108L-BA25XI

Overview

CY14B108L-BA25XI from Cypress Semiconductor is an 8-Mbit nonvolatile SRAM (nvSRAM) with QuantumTrap technology, organized as 1024 K × 8, 25 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-controlled STORE/RECALL for data retention in mission-critical logging and control systems.

For engineers reviewing the CY14B108L-BA25XI datasheet, CY14B108L-BA25XI pinout, CY14B108L-BA25XI application, or CY14B108L-BA25XI equivalent, key selection criteria include AutoStore reliability under brownout, 1 million STORE endurance, 20-year data retention, ×8 bus interface compatibility, and HSB-driven hardware STORE timing coordination.

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 BHE/ BLE support - confirming CY14B108L-BA25XI is the ×8 variant, distinct from CY14B108N's ×16 configuration.

STORE is triggered by VCC drop below VSWITCH (2.7 V min), initiating capacitor-powered transfer from SRAM to QuantumTrap; RECALL occurs automatically at power-up when VCC exceeds VSWITCH. The HSB pin serves dual role: input to request hardware STORE and open-drain output signaling busy status during STORE/RECALL cycles.

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 nvSRAM applications.

Compared with STK14CA8-3LF35I and FM24V10-G, CY14B108L-BA25XI uniquely delivers 25 ns performance with autonomous AutoStore, eliminating external supervision while maintaining pin- and timing-compatible SRAM behavior - ideal for drop-in replacement in legacy 3 V SRAM designs requiring nonvolatility.

Availability

CY14B108L-BA25XI is available at Aetrix Electronics and suitable for industrial PLC data logging, medical device configuration storage, and telecom base station alarms requiring stable component supply, long-lifecycle assurance, and RoHS-compliant sourcing.

Supply support for CY14B108L-BA25XI 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 system-on-chip solutions for industrial, automotive, and communications markets.

CY14B108L belongs to Cypress's QuantumTrap nvSRAM product line, engineered specifically for applications demanding battery-free nonvolatility, deterministic STORE/RECALL timing, and seamless SRAM interface compatibility.

FAQ

What is the function of the VCAP pin, and what capacitor value is required?

The VCAP pin connects to a 0.1 µF ceramic capacitor that stores charge during normal operation. When VCC drops below 2.7 V, this stored energy powers the internal STORE operation to transfer SRAM contents to QuantumTrap nonvolatile cells. The capacitor must be placed within 5 mm of the VCAP pin with low-ESR characteristics to ensure reliable STORE completion under worst-case brownout conditions.

Can CY14B108L-BA25XI operate in ×16 mode?

No. CY14B108L-BA25XI is strictly a ×8 configuration device, internally organized as 1024 K × 8 and using address lines A0–A19 and data lines DQ0–DQ7. The ×16 variant is the CY14B108N, which uses A0–A18 and DQ0–DQ15 and includes BHE/ BLE pins - absent in this FBGA-48 package variant.

How does the HSB pin behave during AutoStore and hardware STORE?

During any STORE or RECALL operation, HSB is actively driven LOW by the device to signal busy status. After completion, it is driven HIGH for tHHHD (≤100 ns) with full drive strength, then held HIGH by an internal 100 kΩ pull-up. Externally pulling HSB LOW initiates hardware STORE only if at least one write has occurred since the last STORE/RECALL cycle.

Is AutoStore disabled if no capacitor is connected to VCAP?

No - AutoStore remains enabled by default. Without the 0.1 µF capacitor, the device attempts STORE on power loss but lacks sufficient energy, resulting in corrupted data in the nonvolatile array. Cypress explicitly warns that AutoStore must be disabled via software sequence (see Errata page 24) if VCAP is left unconnected.