Cypress Semiconductor Corp S26KS128SDPBHN020

Overview

S26KS128SDPBHN020 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 with optional 4-KB parameter sectors, ECC 1-bit correction/2-bit detection, and supports industrial temperature range (–40°C to +85°C) in 24-ball FBGA package for embedded boot code storage.

For engineers reviewing the S26KS128SDPBHN020 datasheet, S26KS128SDPBHN020 pinout, S26KS128SDPBHN020 application, or S26KS128SDPBHN020 equivalent, key selection criteria include HYPERBUS™ timing compliance (96 ns random access, 118 ns CS# to first word), RWDS-synchronized DDR read alignment, sector protection granularity, deep power-down current (4 µA), and AEC-Q100 grade 3 qualification for automotive control modules.

Technical Context

The device implements a synchronous DDR interface where command/address and data share the 8-bit DQ bus, with RWDS edge-aligned to read data transitions and CK/CK# differential clock enabling precise timing capture. Internal MIRRORBIT™ architecture organizes memory into 32-byte pages composed of two 16-byte half-pages, enabling burst reads with configurable wrapped (8/16/32 clocks) or linear modes.

Control logic splits between Host Interface Controller (HIC) handling real-time signal monitoring and data transfer, and Embedded Algorithm Controller (EAC) executing non-volatile operations-sector erase, buffer programming, and protection configuration-via command sequences written to address space without host firmware 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 S26KS128SDPBHN020, the HV variant extends thermal range without altering power or timing behavior, while the 256 Mb variant doubles capacity within identical footprint and interface-both preserve HYPERBUS™ timing, ECC, and sector protection architecture for seamless migration.

Availability

S26KS128SDPBHN020 is available at Aetrix Electronics and suitable for automotive ADAS ECUs, industrial PLCs, medical imaging systems, and avionics display units requiring stable component supply, AEC-Q100 qualification, and long-term data retention.

Supply support for S26KS128SDPBHN020 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, sensor, and memory solutions for automotive, industrial, and IoT applications.

This part belongs to the HYPERFLASH™ family-designed specifically for high-speed, low-pin-count boot memory in SoC-based systems requiring deterministic read performance and robust data integrity in harsh environments.

FAQ

What is the minimum supported clock frequency for reliable HYPERBUS™ operation?

The device supports variable clock rates down to DC for command execution, but sustained DDR read operations require ≥1 MHz to maintain RWDS synchronization. The datasheet specifies timing parameters only down to 100 MHz (3.0 V) and 166 MHz (1.8 V) for maximum throughput; lower frequencies are functional but reduce bandwidth proportionally without violating AC specs.

Does S26KS128SDPBHN020 support octal SPI or QSPI interfaces?

No. This device implements only the HYPERBUS™ DDR interface with mandatory CK/CK#, RWDS, and 8-bit DQ bus. It does not support SPI, QSPI, or any serial peripheral interface. Compatibility requires a host controller with native HYPERBUS™ master logic-not software-emulated SPI.

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

The OTP region resides at fixed address 0x0000_0000 and is accessed via standard HYPERBUS™ read/write commands. Once programmed, bits cannot be erased; protection is enforced by hardware-writing to already-set bits has no effect. OTP programming requires issuing specific unlock sequences followed by write commands, and is typically performed once during manufacturing.

Can RWDS be disabled or repurposed as a general-purpose I/O?

No. RWDS is a dedicated, always-enabled output tied to internal read-data timing logic. It cannot be disabled, tri-stated, or reassigned. Its function is intrinsic to HYPERBUS™ protocol compliance-removing or ignoring RWDS violates timing specifications and will cause read data corruption under DDR operation.