Cypress Semiconductor Corp S26KL256SDABHA030

Overview

S26KL256SDABHA030 from Infineon is a 256 Mb (32 MB) HYPERFLASH™ NOR flash memory with HYPERBUS™ DDR interface, operating at 1.8 V I/O and 3.0 V core, delivering 333 MBps sustained read throughput at 166 MHz clock rate. It features 8-bit DDR data bus (DQ[7:0]), RWDS read strobe, differential clock (CK/CK#), 256-KB uniform sectors, ECC 1-bit correction/2-bit detection, and industrial temperature range (–40°C to +85°C). Used in automotive ADAS domain controllers for fast boot code execution.

For engineers reviewing the S26KL256SDABHA030 datasheet, S26KL256SDABHA030 pinout, S26KL256SDABHA030 application, or S26KL256SDABHA030 equivalent, key selection criteria include HYPERBUS™ timing compliance, RWDS-synchronized DDR read latency (96 ns tACC), sector protection granularity, deep power-down current (4 µA), and AEC-Q100 grade 3 qualification for automotive use.

Technical Context

The device implements a synchronous DDR interface where command/address and data share the 8-bit DQ bus, with dual-edge sampling referenced to CK/CK#. Read operations use RWDS as a source-synchronous strobe aligned to data edges, enabling precise capture at 166 MHz.

Internally, it separates host interface control (HIC) from embedded algorithm control (EAC); HIC handles real-time signal timing and data transfer, while EAC executes autonomous program/erase sequences-including 256-KB sector erase and 512-byte buffer programming-without host intervention during execution.

Key Specifications

Pinout & Package

Package: 24-ball FBGA (VAA024), 5 × 5 mm, 0.8 mm pitch, RoHS-compliant, moisture sensitivity level 3.

Key Features

Applications

Equivalent & Alternatives

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

Compared with S26KL256SDABHA030, the Cypress alternative lacks automotive qualification despite identical silicon, while the Winbond part trades bandwidth, ECC, and timing precision for broader QSPI ecosystem compatibility-making it suitable only where HYPERBUS™ infrastructure is absent.

Availability

S26KL256SDABHA030 is available at Aetrix Electronics and suitable for automotive ADAS domain controllers, industrial PLC firmware storage, and medical imaging system boot memory requiring stable component supply across extended product lifecycles.

Supply support for S26KL256SDABHA030 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.

This device belongs to Infineon's HYPERFLASH™ family-designed specifically for automotive and industrial applications demanding high-speed, low-pin-count, ECC-protected NOR flash with AEC-Q100 qualification and guaranteed 20-year data retention.

FAQ

What is the minimum supported clock frequency for S26KL256SDABHA030?

The device supports variable clock rates down to DC (0 Hz) in standby and deep power-down modes. During active read/write operations, the minimum functional clock frequency is 1 MHz, verified per AC timing specifications in Table 12.2 of the datasheet. This allows flexible host controller clock gating without violating setup/hold margins.

Does S26KL256SDABHA030 require external pull-up resistors on DQ lines?

No. The device integrates programmable weak pull-ups on DQ[7:0] that are enabled automatically when CS# is HIGH and the bus is idle. External pull-ups are unnecessary and may cause signal integrity issues due to double termination; Infineon's layout guidelines explicitly prohibit them.

How is the RSTO# pulse duration configured?

RSTO# LOW period is set via non-volatile configuration register bits CR[11:8], with eight selectable durations ranging from 100 ns to 100 ms. Default is 1 ms; reprogramming requires issuing the Write Configuration Register command (0x01) with appropriate CR value, followed by Write Enable and Erase/Program Unlock sequences.

Can S26KL256SDABHA030 operate in single-ended clock mode?

No. This variant (S26KL256SDABHA030) is specified exclusively for differential clock operation (CK/CK#) at 1.8 V I/O. Single-ended clock support exists only in the 3.0 V I/O variants (e.g., S26KL256SDABHA010), which use CK only and lack CK#-a hardware-level distinction confirmed in Table 14.2 of the ordering information section.