Infineon Technologies S25FL128SAGBHIC13

Overview

S25FL128SAGBHIC13 from Infineon is a 128 Mb (16 MB) serial NOR flash memory IC with SPI Multi-I/O interface, designed for high-reliability military applications requiring extended temperature operation (–55°C to +125°C), hardware ECC, and dual/quad/DDR read modes. It supports hybrid or uniform sector erase, 256-byte or 512-byte page programming, and operates from 2.7 V to 3.6 V core supply with independent 1.65 V–3.6 V I/O voltage.

For engineers reviewing the S25FL128SAGBHIC13 datasheet, S25FL128SAGBHIC13 pinout, S25FL128SAGBHIC13 application, or S25FL128SAGBHIC13 equivalent, this device is selected for boot code storage in radiation-tolerant avionics, secure firmware update in tactical radios, and configuration retention in ruggedized FPGA-based signal processors where data integrity, long-term retention (>20 years), and deterministic erase timing are critical.

Technical Context

This SPI flash implements Infineon's 65-nm MIRRORBIT™ Eclipse architecture with on-die ECC logic that automatically corrects single-bit errors during read operations and reports multi-bit errors via status register. It supports both standard SPI clock modes (0 and 3) and DDR command execution at up to 80 MHz, enabling quad DDR read throughput of 80 MBps at VIO = VCC = 3.0–3.6 V.

The device features two configurable sector architectures: hybrid (thirty-two 4-KB sectors + remaining 64-KB sectors) for legacy compatibility, and uniform (256-KB logical blocks) for software portability across higher-density FL-S families. Its OTP array (1024 bytes) and Advanced Sector Protection enable secure boot key storage and per-sector write/erase lock controlled by password or boot code.

Key Specifications

Pinout & Package

Package: 24-ball FBGA (FAB024), 6 mm × 8 mm, Pb-free, RoHS-compliant. Pinout conforms to Infineon's standardized SPI-MIO BGA mapping for drop-in replacement within FL-S family.

Key Features

Applications

Equivalent & Alternatives

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

Compared with S25FL128SAGBHIC13, the commercial S25FL128SAGMFI10 sacrifices environmental robustness for lower unit cost, while the Macronix MX25L12833FZC-10G trades bandwidth, temperature range, and package compatibility for broader distributor availability in non-military supply chains.

Availability

S25FL128SAGBHIC13 is available at Aetrix Electronics and suitable for avionics boot memory, tactical radio firmware storage, and ruggedized FPGA configuration requiring stable component supply across extended temperature and long-lifecycle programs.

Supply support for S25FL128SAGBHIC13 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, and security solutions for automotive, industrial, and aerospace markets.

The FL-S family targets high-reliability embedded systems needing secure, fast, and thermally robust serial NOR flash - specifically engineered for military, avionics, and industrial control applications demanding guaranteed data integrity and long-term availability.

FAQ

Does S25FL128SAGBHIC13 support Quad DDR read commands?

Yes, it supports Fast Read DDR, Dual Read DDR, and Quad Read DDR commands at up to 80 MHz clock frequency, delivering 20 MBps, 40 MBps, and 80 MBps throughput respectively when VIO = VCC = 3.0–3.6 V. These modes require strict setup/hold timing compliance and are validated across the full –55°C to +125°C range per Infineon's characterization data.

What is the purpose of the VIO pin, and can it be tied to VCC?

VIO supplies power to the I/O buffer circuitry independently from the core VCC rail, enabling interoperability with 1.8 V or 3.3 V host controllers. It may be tied to VCC only if the host operates at the same voltage and timing margins allow - however, Infineon specifies separate decoupling and recommends independent regulation when interfacing with mixed-voltage systems to ensure signal integrity in DDR mode.

How does the AutoBoot feature function, and is its address configurable?

AutoBoot executes a preselected read command (Normal or Quad) at a user-defined address immediately after power-up or hardware reset. The boot address and command type are stored in nonvolatile configuration registers and programmed via standard SPI commands - no external hardware is needed, and the setting persists across power cycles per the device's >20-year data retention spec.

Is the OTP array one-time programmable, and how is write protection enforced?

Yes, the 1024-byte OTP array is permanently programmable using dedicated SPI commands; once a bit is set to '0', it cannot be reverted to '1'. Write access is disabled after programming via a dedicated OTP lock bit in the status register, and further protected by hardware block protection bits that prevent accidental overwrite during routine flash operations.