Infineon Technologies CY14V101LA-BA45XIT

Overview

CY14V101LA-BA45XIT from Infineon Technologies (formerly Cypress) is a 1-Mbit non-volatile static RAM (nvSRAM) with QuantumTrap technology, organized as 128 K × 8, 25 ns access time, industrial temperature range (–40°C to +85°C), and 48-ball FBGA package. It performs automatic STORE on power loss using VCAP capacitor, supports software/hardware STORE/RECALL, and delivers 20-year data retention with 1 million STORE cycles.

For engineers reviewing the CY14V101LA-BA45XIT datasheet, CY14V101LA-BA45XIT pinout, CY14V101LA-BA45XIT application, or CY14V101LA-BA45XIT equivalent, key selection criteria include AutoStore timing dependency on VCAP capacitance, HSB-driven hardware STORE arbitration, ×8 vs ×16 configuration pin compatibility, and dual-supply operation (VCC = 3.0–3.6 V, VCCQ = 1.65–1.95 V).

Technical Context

This nvSRAM integrates SRAM and QuantumTrap non-volatile cells in each memory location, enabling parallel STORE/RECALL across all 131,072 bytes. STORE is triggered by power-down (via VCAP discharge), HSB pin assertion, or software address sequence; RECALL occurs automatically at power-up or via software command.

Operation requires strict sequencing: SRAM writes must occur before HSB-initiated STORE to avoid inhibition; HSB acts as open-drain busy indicator during STORE (driven LOW) and releases HIGH post-completion with tHHHD pulse. VCAP must be ≥0.1 µF (per datasheet Figure 2) to guarantee full STORE execution under VSWITCH threshold violation.

Key Specifications

Pinout & Package

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

Key Features

Applications

Equivalent & Alternatives

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

Compared with STK14CA8-3LF3A and FM24V10-G, CY14V101LA-BA45XIT uniquely combines 25 ns speed, HSB-driven hardware STORE arbitration, and hands-off AutoStore - making it optimal for real-time systems requiring guaranteed data capture during uncontrolled power collapse without MCU intervention.

Availability

CY14V101LA-BA45XIT is available at Aetrix Electronics and suitable for industrial PLC data logging, medical event recording, automotive ADAS black boxes, and telecom base station configuration requiring stable component supply and long-term lifecycle support.

Supply support for CY14V101LA-BA45XIT 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, sensing, connectivity, and security solutions for industrial, automotive, and IoT markets.

This part belongs to Infineon's nvSRAM product line, designed specifically for mission-critical data retention in systems where battery-backed SRAM is impractical and EEPROM/Flash write latency is unacceptable.

FAQ

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

The datasheet specifies a minimum 0.1 µF ceramic capacitor on the VCAP pin. This value ensures sufficient stored energy to complete a full STORE cycle when VCC drops below VSWITCH (typically 2.7 V). Using smaller capacitance risks partial STORE execution and data corruption. The capacitor must be placed within 5 mm of the VCAP pin with low-ESR characteristics.

Can CY14V101LA-BA45XIT operate with VCCQ = 1.8 V and VCC = 3.3 V simultaneously?

Yes - the device is explicitly rated for VCCQ = 1.65–1.95 V and VCC = 3.0–3.6 V concurrently. This dual-supply capability allows direct interfacing with 1.8 V microcontrollers while maintaining robust 3.3 V core logic operation, eliminating level-shifter requirements in mixed-voltage designs.

How does the HSB pin behave during a software-initiated STORE?

During software STORE, HSB is driven LOW by the device to indicate busy status, identical to hardware STORE behavior. After completion, it pulses HIGH with tHHHD duration (typ. 100 ns) followed by weak internal pull-up. External pull-up resistors are optional but recommended for noise immunity in noisy industrial environments.

Is the CY14V101LA-BA45XIT pin-compatible with CY14V101NA?

No - although both share the same 48-ball FBGA package, CY14V101LA (×8) and CY14V101NA (×16) differ in pin function allocation: BHE/ BLE are active only in ×16 mode, and A16 is used in ×8 but NC in ×16. Interchange requires PCB layout revision and firmware address/data bus remapping.