Infineon Technologies S25FS128SDSBHI203

Overview

S25FS128SDSBHI203 from Infineon Technologies is a 128 Mbit (16 MB) serial NOR flash memory with SPI Multi-I/O interface, operating at 1.8 V supply, supporting Quad I/O and DDR Quad I/O read modes up to 80 MBps, featuring 65-nm MIRRORBIT™ Eclipse architecture, 100,000 program-erase cycles, and industrial temperature grade (–40°C to +85°C), used for firmware storage in embedded microcontroller boot applications.

For engineers reviewing the S25FS128SDSBHI203 datasheet, S25FS128SDSBHI203 pinout, S25FS128SDSBHI203 application, or S25FS128SDSBHI203 equivalent, this page delivers verified electrical specs, package mapping to WSON 6×8 mm (WNH008), hybrid/uniform sector erase options, SFDP/CFI support, and real-world timing performance for XIP-capable code execution and secure firmware updates.

Technical Context

This device implements a high-speed SPI-MIO interface compliant with JEDEC JESD216 SFDP v1.6 and Common Flash Interface (CFI), enabling automatic configuration discovery and flexible command set selection across Normal/Fast/Dual/Quad/DDR Quad I/O modes. It integrates hardware ECC for single-bit error correction and supports both burst wrap and continuous XIP read modes.

The flash uses hybrid sector architecture-eight 4-KB sectors plus one 32-KB sector at top/bottom address space, with remaining sectors at 64 KB-or uniform 64-KB sector option. Erase and program suspend/resume functions enable concurrent background operations without interrupting host execution.

Key Specifications

Pinout & Package

Package: WSON 6 × 8 mm (WNH008), 8-pin, Pb-free, with exposed thermal pad (pin 5 connected to VSS).

Key Features

Applications

Equivalent & Alternatives

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

Compared with S25FL128SAGMFI000 and W25Q128JVSIM, the S25FS128SDSBHI203 delivers superior bandwidth via DDR Quad I/O, built-in ECC for functional safety compliance, and hybrid sector flexibility for optimized firmware partitioning-making it optimal for next-generation industrial and automotive boot memory where reliability, speed, and security converge.

Availability

S25FS128SDSBHI203 is available at Aetrix Electronics and suitable for industrial PLCs, automotive ADAS ECUs, medical imaging devices, and edge AI gateways requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.

Supply support for S25FS128SDSBHI203 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, sensing, connectivity, and memory solutions for industrial, automotive, and IoT applications.

The FS-S Flash family targets high-reliability embedded systems needing fast, secure, and configurable non-volatile storage-designed specifically for boot code, firmware, and configuration data in safety-critical and long-lifecycle deployments.

FAQ

What is the maximum supported clock frequency for DDR Quad I/O read operations?

The S25FS128SDSBHI203 supports DDR Quad I/O read at up to 80 MHz clock frequency, delivering 80 MBps effective bandwidth. This is specified in the AC characteristics section (Table 6.5) of the official Infineon datasheet Rev. *O, and requires proper impedance-controlled PCB routing and termination matching to maintain signal integrity.

Does this part include hardware error correction, and how is it implemented?

Yes, the S25FS128SDSBHI203 integrates on-die hardware ECC that automatically detects and corrects single-bit errors during read operations. ECC is always active and transparent to the host controller-no software intervention or additional latency is required. The feature is enabled by default and cannot be disabled.

Can the OTP array be reprogrammed after initial programming?

No, the 1024-byte OTP (One-Time Programmable) array is permanently programmed using high-voltage pulses and cannot be erased or rewritten. Once written, its contents remain immutable, making it suitable for storing cryptographic keys, device serial numbers, or calibration constants that must persist across all future firmware updates.

Is the WSON 6×8 mm package RoHS-compliant and lead-free?

Yes, the WNH008 package used for S25FS128SDSBHI203 is fully Pb-free and RoHS-compliant, meeting EU Directive 2011/65/EU and IPC/JEDEC J-STD-609A Class 1 moisture sensitivity requirements. The package marking includes the "Pb-free" designation and complies with Infineon's green packaging standards.