Infineon Technologies CY14V101PS-SF108XI

Overview

CY14V101PS-SF108XI from Cypress Semiconductor is a 1-Mbit (128K × 8) Quad SPI nvSRAM with integrated real-time clock (RTC), operating at up to 108 MHz interface speed, supporting AutoStore via VCAP capacitor and hardware STORE/RECALL via HSB pin, and delivering 54 MBps read/write bandwidth in QPI mode for industrial data logging and power-fail-safe memory applications.

For engineers reviewing the CY14V101PS-SF108XI datasheet, CY14V101PS-SF108XI pinout, CY14V101PS-SF108XI application, or CY14V101PS-SF108XI equivalent, key selection criteria include quad SPI timing compliance, RTC backup power handling (VRTCBAT), hardware STORE/RECALL control (HSB), VCAP-supported AutoStore latency, and industrial temperature operation (–40 °C to +85 °C).

Technical Context

The CY14V101PS-SF108XI integrates SRAM and SONOS FLASH Quantum Trap nonvolatile storage in a single 128K × 8 array, enabling infinite SRAM write cycles and one million STORE cycles to nonvolatile elements. It supports SPI, Dual SPI, and Quad SPI protocols with opcodes for burst wrap and continuous XIP reads.

Its RTC subsystem includes programmable square wave output (1 Hz to 32.768 kHz), alarm, watchdog timer, and interrupt generation on INT/SQW, backed by VRTCBAT and crystal oscillator (XIN/XOUT). Power management includes Sleep (380 µA) and Hibernate (8 µA) modes with VCC (2.7–3.6 V) and VCCQ (1.71–2.0 V) dual supply domains.

Key Specifications

Pinout & Package

Package: 16-pin SOIC (Small Outline Integrated Circuit), surface-mount, 300 mil body width, standard JEDEC MS-012AC footprint.

Key Features

Applications

Equivalent & Alternatives

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

Compared with FM24V10-G and MB85RS1MT-FPN-GE1, the CY14V101PS-SF108XI uniquely combines 108 MHz QPI, hardware STORE/RECALL (HSB), VCAP-backed AutoStore, and full-featured RTC (alarm, watchdog, SQW) in a single industrial SOIC package-enabling deterministic, self-contained power-fail resilience without host firmware coordination.

Availability

CY14V101PS-SF108XI is available at Aetrix Electronics and suitable for industrial data loggers, smart metering systems, PLC controllers, and medical diagnostic devices requiring stable component supply, long-term lifecycle support, and guaranteed data retention under power interruption.

Supply support for CY14V101PS-SF108XI 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 mixed-signal ICs for industrial, automotive, and IoT applications, with expertise in nonvolatile memory, PSoC architectures, and timing solutions.

The CY14V101PS product line delivers integrated nvSRAM+RTC solutions targeting applications demanding deterministic power-loss recovery, autonomous timekeeping, and secure data logging without external support components.

FAQ

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

The VCAP pin supplies temporary power to complete the STORE operation during VCC dropout. A 0.47 F tantalum or supercapacitor is recommended per datasheet Figure 19; values below 0.33 F risk incomplete STORE at high temperature or fast voltage decay. VCAP must never be shorted to ground or left floating.

Can the RTC operate without an external crystal?

Yes-the RTC includes an internal RC oscillator usable for basic timekeeping, but accuracy degrades to ±500 ppm. For ±2 ppm precision, a 32.768 kHz tuning-fork crystal must be connected between XIN and XOUT; unused crystal pins must remain unconnected, not tied to ground or VCC.

How does hardware STORE differ from AutoStore?

Hardware STORE is triggered instantly by pulling HSB LOW, bypassing SPI bus arbitration and completing within 10 ms. AutoStore activates automatically at VCC dropout using VCAP energy and requires no host action-but depends on capacitor charge level and voltage ramp rate per datasheet Section 6.1.

Is the CY14V101PS-SF108XI compatible with standard SPI controllers?

Yes-it supports SPI modes 0 and 3 (CPOL/CPHA = [0,0] and [1,1]) and operates as a standard SPI slave. In Single SPI mode, it uses only SI, SO, SCK, and CS; WP and NC pins remain unused. QPI mode requires firmware support for extended opcodes and quad-lane timing.