Cypress Semiconductor Corp S25FS064SDSBHN020

Overview

S25FS064SDSBHN020 from Infineon is a 64 Mb (8 MB) serial NOR flash memory with SPI Multi-I/O interface, operating at 1.8 V supply. It supports DDR Quad I/O read up to 80 MBps, features internal hardware ECC for single-bit error correction, and offers hybrid sector erase (eight 4 KB + one 32 KB sectors) plus uniform 64 KB/256 KB block erase options. Used in industrial microcontroller boot code storage requiring high reliability and fast XIP-capable reads.

For engineers reviewing the S25FS064SDSBHN020 datasheet, S25FS064SDSBHN020 pinout, S25FS064SDSBHN020 application, or S25FS064SDSBHN020 equivalent, key selection criteria include 1.7–2.0 V operation, AEC-Q100 Grade 2 qualification (–40°C to +105°C), SFDP/CFI support, OTP array size, and DDR Quad I/O timing compliance.

Technical Context

This device implements Infineon's 65-nm MIRRORBIT™ technology with ECLIPSE architecture, enabling high-density, low-power NOR flash operation. Its SPI-MIO interface supports legacy SPI modes 0/3, QPI mode, and DDR command execution-enabling burst wrap, continuous XIP, and configurable address width (24-/32-bit).

The control logic integrates automatic ECC generation, program/erase suspend-resume, and dual protection schemes: status-register-based block protection and Advanced Sector Protection (ASP) with password- or boot-code-controlled sector locking. Hybrid sector mapping allows flexible firmware partitioning between small boot sectors and large application blocks.

Key Specifications

Pinout & Package

Package: 8-lead SOIC 208 mil (SOC008), Pb-free, industrial temperature grade.

Key Features

Applications

Equivalent & Alternatives

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

Compared with S25FS064SDSBHN020, the LGA variant offers identical functionality in a smaller footprint but demands tighter assembly control, while the FL-L alternative sacrifices DDR performance and modern configuration standards for lower unit cost in static firmware deployments.

Availability

S25FS064SDSBHN020 is available at Aetrix Electronics and suitable for automotive instrument clusters, industrial PLCs, medical imaging subsystems, and smart energy meters requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for S25FS064SDSBHN020 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 ICs, and memory solutions, with global R&D and manufacturing infrastructure.

The S25FS-S series targets high-reliability embedded systems needing fast, secure, and configurable SPI flash-designed specifically for automotive, industrial, and medical applications demanding AEC-Q100 qualification and long-term data integrity.

FAQ

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

The S25FS064SDSBHN020 supports DDR Quad I/O operation at up to 80 MHz clock frequency, delivering 80 MBps effective read bandwidth. This is specified in Table 1 of the datasheet and validated across the full industrial temperature range (–40°C to +105°C). The device uses DLP (Dual Latency Pulse) timing to ensure setup/hold margin compliance at this rate.

Does this part support 32-bit addressing, and how is it enabled?

Yes, the S25FS064SDSBHN020 supports both 24-bit and 32-bit addressing modes. 32-bit addressing is enabled by setting the Extended Addressing Enable (EAE) bit in the Configuration Register (CR2[2]). When enabled, the device accepts four-byte addresses for access beyond the 16 MB boundary, allowing full utilization of its 8 MB capacity in systems with larger address maps.

How does the Advanced Sector Protection (ASP) differ from standard status register protection?

ASP provides per-sector locking controlled either by boot code execution or a user-defined password, unlike status register protection which applies uniformly to contiguous sector ranges. ASP allows fine-grained, dynamic protection of individual sectors-such as isolating bootloader code from application updates-without affecting other regions, enhancing security in field-upgradable systems.

Is the 1024-byte OTP array one-time programmable only, or can it be erased?

The 1024-byte OTP array is strictly one-time programmable: bits can be set from '1' to '0', but cannot be reset to '1'. No erase mechanism exists for this region. It is intended for permanent storage of immutable data such as cryptographic keys, device serial numbers, or calibration constants that must survive all subsequent erase cycles of main memory.