Infineon Technologies S25FS064SDSNFI033

Overview

S25FS064SDSNFI033 from Infineon is a 64 Mb (8 MB) serial NOR flash memory IC with SPI Multi-I/O interface, 1.8 V single supply, and industrial temperature range (–40°C to +85°C). It supports DDR Quad I/O read at 80 MHz (80 MBps), 256/512-byte page programming, hardware ECC, hybrid/uniform sector erase, and AEC-Q100 Grade 3 automotive qualification. Used in boot code storage for microcontrollers in industrial control systems.

For engineers reviewing the S25FS064SDSNFI033 datasheet, S25FS064SDSNFI033 pinout, S25FS064SDSNFI033 application, or S25FS064SDSNFI033 equivalent, key selection criteria include SPI-MIO timing compliance, 1.7–2.0 V VCC tolerance, 100,000 program-erase cycles, SFDP/CFI configuration support, and OTP array availability for secure firmware storage.

Technical Context

This device implements Infineon's 65-nm MIRRORBIT™ technology with ECLIPSE architecture, enabling high-density, low-voltage NOR flash operation. Its SPI-MIO interface supports legacy SPI modes 0/3, QPI mode, and DDR Quad I/O with burst wrap and XIP-capable continuous read.

The internal control logic integrates automatic ECC generation (single-bit correction), program/erase suspend-resume, and configurable sector protection via status register bits, ASP, and hardware/software WP# control - all operating within a 1.7–2.0 V supply window.

Key Specifications

Pinout & Package

Package: 8-lead SOIC 208 mil (SOC008), Pb-free, industrial temperature grade (–40°C to +85°C).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar serial NOR flash memory applications.

Compared with S25FS064SDSNFI033, the S25FL064L trades DDR speed and automotive qualification for legacy footprint compatibility, while the W25Q64JV sacrifices voltage flexibility, ECC, and security features to reduce BOM cost - making the Infineon part optimal for safety-critical, low-voltage, high-throughput embedded boot systems.

Availability

S25FS064SDSNFI033 is available at Aetrix Electronics and suitable for industrial PLCs, automotive ADAS modules, medical imaging devices, and edge AI gateways requiring stable component supply, long-life support, and AEC-Q100 compliance.

Supply support for S25FS064SDSNFI033 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 German semiconductor manufacturer specializing in power management, automotive MCUs, and high-reliability memory solutions.

The S25FS-S family targets mission-critical embedded systems needing fast, secure, and automotive-qualified serial NOR flash - designed specifically for boot code integrity, firmware update resilience, and long-term data retention in harsh environments.

FAQ

What is the maximum clock frequency supported in DDR Quad I/O mode?

The S25FS064SDSNFI033 supports DDR Quad I/O operation up to 80 MHz, delivering 80 MBps effective read bandwidth. This is confirmed in Table 1 of the official Infineon datasheet (002-03631 Rev. *I), and requires proper PCB layout with matched trace lengths and controlled impedance for all four I/O lines.

Does this device require external hardware ECC circuitry?

No. The device includes fully integrated hardware ECC that automatically detects and corrects single-bit errors during read operations. No external circuitry or host software intervention is required - the ECC engine operates transparently within the flash controller logic.

Can the hybrid sector configuration be changed after manufacturing?

No. The hybrid sector map (eight 4 KB + one 32 KB sectors at top or bottom) is fixed at wafer fabrication and cannot be altered in-system. Sector configuration is determined by factory programming of the configuration register and is immutable post-production.

Is the 1024-byte OTP array one-time programmable per byte or per block?

The OTP array is organized as 1024 individually addressable bytes, each programmable once. Once a bit is set from '1' to '0', it cannot be reverted. Programming is performed via standard SPI commands (e.g., Write Enable + Program OTP), and verification is supported through dedicated read-back instructions.