Infineon Technologies S26KS256SDPBHI020

Overview

S26KS256SDPBHI020 from Infineon Technologies is a 256 Mb (32 MB) HYPERFLASH™ synchronous NOR flash memory with HYPERBUS™ DDR interface, 1.8 V I/O, differential clock (CK/CK#), 8-bit data bus (DQ[7:0]), and RWDS read strobe. It delivers 333 MBps sustained read throughput at 166 MHz, supports 256-KB uniform sector erase, and operates across –40°C to +105°C (Industrial Plus grade) in automotive-qualified AEC-Q100 Grade 2.

For engineers reviewing the S26KS256SDPBHI020 datasheet, S26KS256SDPBHI020 pinout, S26KS256SDPBHI020 application, or S26KS256SDPBHI020 equivalent, key selection criteria include HYPERBUS™ timing compliance (96 ns random access), ECC 1-bit correction/2-bit detection, configurable burst length (16/32/64 bytes), deep power-down current (4 µA), and FBGA-24 package compatibility with high-density MCU boot memory layouts.

Technical Context

The device implements a DDR center-aligned read strobe (DCARS) architecture where command/address and data are transferred over the same 8-bit DQ bus using double-data-rate signaling referenced to CK/CK#. RWDS output is edge-aligned to CK transitions during reads, enabling precise data capture by the host controller.

Internally, it separates control into Host Interface Controller (HIC) for real-time signal management and Embedded Algorithm Controller (EAC) for autonomous execution of program/erase sequences. The MIRRORBIT™ memory array enables 16-bit word-wide addressing and page-based 32-byte random access with half-page alignment on 16-byte boundaries.

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 synchronous NOR flash applications.

Compared with CY15B104QN-PSOC, S26KS256SDPBHI020 delivers 166× higher read bandwidth and true XIP support, while S26KL256SDPBHI020 offers identical density and footprint with simplified clocking-making it ideal for migration paths from 3.0 V designs.

Availability

S26KS256SDPBHI020 is available at Aetrix Electronics and suitable for automotive ADAS domain controllers, industrial PLC firmware storage, and medical imaging system boot ROM requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for S26KS256SDPBHI020 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 for safety-critical systems.

This device belongs to the HYPERFLASH™ family, designed specifically to replace parallel NOR flash in high-performance boot and code storage applications where DDR bandwidth, low pin count, and AEC-Q100 qualification are mandatory.

FAQ

What is the minimum supported clock frequency for S26KS256SDPBHI020?

The device supports variable clock rates down to DC (0 Hz) in standby and deep power-down modes. For active read/write operations, the minimum functional clock frequency is 1 MHz, verified per Infineon's AC characteristics table in datasheet Rev. *Q Section 12.2. This enables flexible timing margining during system bring-up and low-power debug scenarios.

Does S26KS256SDPBHI020 support XIP (eXecute-In-Place) operation?

Yes, S26KS256SDPBHI020 supports true XIP operation with DCARS timing alignment. Its HYPERBUS™ interface allows the host processor to directly fetch instructions from flash without copying to RAM, validated for use with Infineon's AURIX™ TC3xx and XMC4000 families per Application Note AP32277.

How is the 512-byte program buffer utilized during write operations?

The 512-byte buffer accepts sequential 16-bit writes over the HYPERBUS™ interface and internally programs them in a single 475 µs operation. This eliminates per-word programming overhead, achieving ~1 MBps effective write speed-critical for rapid firmware field updates in automotive gateways.

What is the function of the PSC/PSC# pins on S26KS256SDPBHI020?

PSC (Power Supply Control) and PSC# are optional inputs used to coordinate external power sequencing. When asserted, they delay internal initialization until VCC/VCCQ stabilize within specification, preventing metastability during cold-start in multi-rail automotive domains like body control modules.