Cypress Semiconductor Corp S25FS128SAGBHM200

Overview

S25FS128SAGBHM200 from Infineon is a 128 Mb (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, hybrid/ uniform sector erase options, and integrated hardware ECC for single-bit error correction. It targets boot code storage in industrial microcontroller systems requiring fast XIP-capable nonvolatile memory.

For engineers reviewing the S25FS128SAGBHM200 datasheet, S25FS128SAGBHM200 pinout, S25FS128SAGBHM200 application, or S25FS128SAGBHM200 equivalent, key selection criteria include 1.8 V operation, AEC-Q100 Grade 2 qualification (–40°C to +105°C), WSON 6 × 8 mm package, SFDP/CFI support, and OTP array for secure configuration storage.

Technical Context

This device implements a SPI-MIO interface compliant with JEDEC JESD216 SFDP v1.6 and Common Flash Interface (CFI), enabling automatic configuration discovery and flexible command mapping. It supports both standard SPI clock modes (0 and 3) and DDR mode with programmable latency and wrap burst addressing.

The internal architecture includes dual-bank erase capability, program/erase suspend-resume functionality, and hardware-managed ECC across all read operations. Sector protection is implemented via status register bits, hardware WP#, and Advanced Sector Protection (ASP) with password-controlled access to individual sectors.

Key Specifications

Pinout & Package

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

Key Features

Applications

Equivalent & Alternatives

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

Compared with S25FL128SAGMFI000, this part adds SFDP v1.6 compliance for future-proof bootloader flexibility; versus W25Q128JVSIM, it delivers 100% higher read bandwidth, ECC assurance, and 1.8 V compatibility-critical for next-gen low-power automotive and industrial platforms.

Availability

S25FS128SAGBHM200 is available at Aetrix Electronics and suitable for industrial PLCs, automotive ADAS modules, medical imaging systems, and smart grid communication devices requiring stable component supply, long-term lifecycle support, and AEC-Q100 qualification.

Supply support for S25FS128SAGBHM200 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 secure memory solutions, with global R&D and manufacturing infrastructure.

This device belongs to Infineon's FS-S family of high-performance SPI NOR flash, designed specifically for automotive and industrial applications demanding robustness, security, and high-speed XIP capability in 1.8 V systems.

FAQ

Does S25FS128SAGBHM200 support Quad Enable (QE) bit configuration via Status Register?

Yes, the QE bit (SR[1]) is programmable via Write Status Register command and must be set to enable Quad I/O mode. The device defaults to standard SPI mode on power-up; QE must be explicitly enabled before issuing Quad Read or Quad Program commands. This configuration persists across power cycles unless cleared by Write Status Register with QE=0.

What is the function of the IO3/RESET# pin during normal operation?

During normal operation, IO3 serves as the fourth I/O line in Quad I/O mode for data transfer. When asserted low, it performs hardware reset: terminating all ongoing operations, clearing internal state machines, and returning the device to standby mode. It does not affect contents of memory or registers but resets command sequencing logic.

How is the 1024-byte OTP array accessed and protected?

The OTP array resides at address 0x00000000–0x000003FF and is accessed using dedicated One-Time Program Array commands (0x4B, 0x42). Once programmed, bits cannot be reset. Protection is enforced by Status Register lock bits (SRP0/SRP1); setting SRP1 permanently locks the entire OTP region against further writes after initial programming.

Can S25FS128SAGBHM200 operate in continuous read (XIP) mode with wrap burst addressing?

Yes, it supports Continuous Read mode with wrap burst addressing (0x0B command), allowing seamless sequential access across page boundaries without reissuing addresses. This mode is optimized for XIP execution, with automatic address increment and wrap behavior defined by burst length (1–256 bytes), reducing CPU overhead during instruction fetch.