Infineon Technologies S26KS128SDPBHI020

Overview

S26KS128SDPBHI020 from Infineon Technologies is a 128 Mb (16 MB) HYPERFLASH™ NOR flash memory with HYPERBUS™ DDR interface, operating at 1.8 V I/O and supporting differential clock (CK/CK#), 8-bit DQ bus, and RWDS read strobe. It delivers 333 MBps sustained read throughput at 166 MHz, features 256-KB uniform sectors, ECC 1-bit correction/2-bit detection, and supports industrial temperature range (–40°C to +85°C) in 24-ball FBGA package.

For engineers reviewing the S26KS128SDPBHI020 datasheet, S26KS128SDPBHI020 pinout, S26KS128SDPBHI020 application, or S26KS128SDPBHI020 equivalent, this device is selected for high-speed boot code storage in automotive ADAS ECUs, industrial PLCs requiring deterministic low-latency reads, and embedded systems needing AEC-Q100 grade 3 qualification and 20-year data retention.

Technical Context

The S26KS128SDPBHI020 implements a synchronous DDR interface where command/address and data share the 8-bit DQ bus, with RWDS synchronized to CK/CK# edges during reads. Its internal MIRRORBIT™ architecture enables page-aligned 32-byte random access with 5–16 clock-cycle initial latency and configurable burst modes (wrapped: 16/32/64 bytes; linear; hybrid).

Two dedicated controllers manage operation: the Host Interface Controller (HIC) handles real-time signal timing and data transfer coordination, while the Embedded Algorithm Controller (EAC) executes non-volatile programming/erase sequences-including sector erase, buffer programming, and volatile/non-volatile sector protection-without host intervention.

Key Specifications

Pinout & Package

Package: 24-ball FBGA (VAA024), 5 mm × 5 mm × 1.0 mm, 0.8 mm ball pitch, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-speed NOR flash applications.

Compared with S26KS128SDPBHI020, the Cypress-branded variant offers identical performance and qualification, while the Macronix MX25L12873FMI-10G trades bandwidth and ECC for SPI simplicity - making it suitable only when HYPERBUS™ infrastructure is unavailable.

Availability

S26KS128SDPBHI020 is available at Aetrix Electronics and suitable for automotive ADAS ECUs, industrial PLCs, and medical imaging systems requiring stable component supply, long-term lifecycle support, and AEC-Q100 Grade 3 qualification.

Supply support for S26KS128SDPBHI020 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 microcontrollers, and high-reliability memory solutions, with global manufacturing and quality certifications including ISO/TS 16949.

The HYPERFLASH™ product line was developed to address the demand for high-speed, low-pin-count boot memory in safety-critical automotive and industrial systems, replacing parallel NOR and Quad SPI with deterministic DDR timing and integrated ECC.

FAQ

What is the minimum supported clock frequency for reliable operation?

The S26KS128SDPBHI020 does not specify a minimum clock frequency; it operates down to DC in all active modes. The device remains fully functional at any clock rate between 0 MHz and 166 MHz (1.8 V) or 100 MHz (3.0 V), with timing parameters scaling linearly. This allows flexible clock gating and dynamic frequency scaling in power-constrained systems without loss of functionality.

How does the RWDS signal behave during linear burst reads?

During linear burst reads, RWDS toggles synchronously with CK/CK# edges for each 8-bit data transfer on DQ[7:0], remaining active throughout the entire burst. Its rising/falling edges align precisely with valid data transitions, enabling the host to latch data reliably without additional timing margin. RWDS deasserts one half-cycle after the final data byte is driven.

Can the 4-KB parameter sectors be used for storing calibration data?

Yes - the eight optional 4-KB parameter sectors (32 KB total) are designed specifically for frequently updated calibration data, security keys, or runtime configuration. They support independent erase and protection, and retain data for 20 years at 85°C. Each sector can be locked individually using volatile or non-volatile protection bits to prevent accidental overwrite.

Is RSTO# assertion required during power-on reset sequencing?

No - RSTO# is an open-drain output that may be left unconnected if the host system provides its own reset generation. When enabled, it asserts LOW for a user-programmable duration (1–255 ms) after VCC reaches stable operating voltage, ensuring synchronous release of all downstream logic. Its use is optional but recommended for systems lacking robust external reset supervision.