Infineon Technologies S25FL128P0XMFI011M

Overview

S25FL128P0XMFI011M from Cypress Semiconductor is a 128-Mbit, 3.0 V SPI Flash memory with uniform 64 KB sector architecture, 104 MHz max clock rate, 256-byte page programming (1.5 ms typical), and industrial temperature range (–40°C to +85°C). It operates from 2.7V to 3.6V, supports hardware write protection via WP#/ACC pin, and is used in firmware storage for embedded microcontrollers in industrial control systems.

For engineers reviewing the S25FL128P0XMFI011M datasheet, S25FL128P0XMFI011M pinout, S25FL128P0XMFI011M application, or S25FL128P0XMFI011M equivalent, key selection criteria include sector size configuration (64 KB vs. 256 KB), accelerated programming voltage requirement (8.5–9.5 V on WP#/ACC), Deep Power Down current (3 µA typical), and SOIC-16 vs. WSON-8 package compatibility.

Technical Context

This device implements a serial peripheral interface (SPI) compliant with modes 0 (CPOL=0, CPHA=0) and 3 (CPOL=1, CPHA=1), latching input on SCK rising edge and driving output on falling edge. It uses Cypress's 0.09 µm MirrorBit® process and supports both standard and accelerated programming via external high-voltage injection on WP#/ACC.

Memory organization is configurable as either 256 sectors × 64 KB or 64 sectors × 256 KB; this part (S25FL128P0XMFI011M) is the 64 KB uniform sector variant (model number "00" per ordering table). Protection is enforced through non-volatile BP3–BP0 bits in the status register and hardware SRWD bit activation when WP#/ACC is low.

Key Specifications

Pinout & Package

Package: 16-pin SOIC (300-mil body width), industry-standard footprint compatible with legacy PCB layouts and automated assembly.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar SPI Flash memory applications.

Compared with S25FL128P0XMFI011M, the S25FL128S offers higher endurance and built-in ECC for mission-critical firmware, while MX25L12833F requires driver-level changes due to differing command set and protection implementation - making S25FL128S the preferred drop-in upgrade.

Availability

S25FL128P0XMFI011M is available at Aetrix Electronics and suitable for industrial control systems, embedded gateways, test instrumentation, and motor drive firmware storage requiring stable component supply and long-term obsolescence management.

Supply support for S25FL128P0XMFI011M 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) is a fabless semiconductor company specializing in memory, microcontrollers, and connectivity solutions for industrial, automotive, and consumer applications.

The S25FL family was designed specifically for high-reliability, low-power SPI Flash applications in industrial and embedded systems where firmware integrity, long data retention, and robust write protection are essential.

FAQ

What is the function of the WP#/ACC pin on S25FL128P0XMFI011M?

The WP#/ACC pin serves dual functions: when held low, it enables hardware write protection for memory regions defined by status register BP bits; when supplied with 8.5–9.5 V, it activates accelerated programming mode, reducing page program time from 1.5 ms to 1.2 ms. It is not a standard logic-level input in accelerated mode and requires external voltage generation.

Does S25FL128P0XMFI011M support Quad SPI or Dual SPI modes?

No, S25FL128P0XMFI011M supports only standard single-data-line SPI (Mode 0 and Mode 3). It does not implement Quad SPI (QSPI) or Dual SPI protocols. The SO and SI pins are dedicated single-ended lines; no QIO, QOUT, DIO, or DOUT commands are defined in its command set.

Can S25FL128P0XMFI011M be used in place of S25FL128S in existing designs?

S25FL128P0XMFI011M is not a drop-in replacement for S25FL128S: the S25FL128S includes enhanced features like on-die ECC and higher endurance (200K vs. 100K cycles), and its status register layout differs. While pinout and basic command set are compatible, firmware validation is required to confirm behavior under error conditions and protection settings.

What is the purpose of the exposed pad on the WSON package variant?

The exposed central pad on the WSON-8 package (not used in this SOIC variant) is a thermal and mechanical feature, not an electrical connection. It must not be connected to any voltage or signal. If tied to GND, PCB routing must ensure 0 mV potential difference between the pad and the GND pin to avoid leakage or latch-up; otherwise, it should remain floating per Cypress recommendation.