Infineon Technologies S70KS1283GABHA020

Overview

S70KS1283GABHA020 from Infineon is a 128 Mb self-refresh DRAM (PSRAM) with octal xSPI interface, supporting 1.8 V/3.0 V operation and delivering up to 400 MBps data throughput at 200 MHz DDR clock rate. It features configurable burst lengths (16–128 bytes), hybrid sleep and deep power down modes, and operates across industrial (–40°C to +85°C) and automotive AEC-Q100 Grade 2 (–40°C to +105°C) temperature ranges.

For engineers reviewing the S70KS1283GABHA020 datasheet, S70KS1283GABHA020 pinout, S70KS1283GABHA020 application, or S70KS1283GABHA020 equivalent, key selection criteria include octal xSPI timing compliance, RWDS strobe behavior in read/write transactions, partial array refresh capability, DCARS phase-shifted read strobe support, and dual-voltage I/O compatibility for MCU-attached memory expansion.

Technical Context

This PSRAM implements stacked-die architecture (two 64 Mb dies) with independent power mode control per die. Its xSPI interface supports both single-ended (11-signal) and optional differential clock (CK/CK#, 12-signal), and uses bidirectional RWDS for read-data strobe and write-data mask functions.

The device integrates on-die refresh logic that eliminates host-managed refresh cycles, enabling seamless SRAM-like access while retaining DRAM density advantages. DCARS functionality provides a second-phase clock to align RWDS transitions within the read data eye, improving timing margin at high-speed DDR transfers.

Key Specifications

Pinout & Package

Package: 24-ball FBGA (5 mm × 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 PSRAM applications.

Compared with S27KL0641DPBHB020 and MT46H128M16LFDD-5IT:C, the S70KS1283GABHA020 uniquely combines octal xSPI simplicity, on-die self-refresh, DCARS timing robustness, and AEC-Q100 Grade 2 qualification - making it the only drop-in PSRAM solution for next-gen automotive and industrial edge devices demanding >300 MBps sustained bandwidth.

Availability

S70KS1283GABHA020 is available at Aetrix Electronics and suitable for automotive ADAS displays, industrial HMI systems, edge AI accelerators, and medical imaging preview engines requiring stable component supply across extended temperature and long product lifecycles.

Supply support for S70KS1283GABHA020 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 ICs, and memory solutions, with global R&D and manufacturing infrastructure.

The HYPERRAM™ product line targets high-bandwidth, low-pin-count memory expansion for resource-constrained embedded processors - specifically designed to replace parallel SRAM and legacy PSRAM in automotive, industrial, and IoT edge applications.

FAQ

What is the function of the RWDS pin in read versus write operations?

In read operations, RWDS is an output that serves as a read data strobe - either center-aligned or DCARS-offset - to sample DQ[7:0] valid data. During writes, RWDS becomes an input acting as a write data mask, allowing selective byte programming without read-modify-write cycles. This dual-role design eliminates separate strobe lines and reduces pin count.

Does S70KS1283GABHA020 require external refresh circuitry or host software intervention?

No. The device contains fully autonomous on-die refresh logic that executes periodic row refreshes during idle cycles without host involvement. The host sees only SRAM-like behavior: no refresh commands, no timing constraints beyond standard xSPI transaction windows, and guaranteed data retention across all supported power modes including Hybrid Sleep.

How does the stacked-die architecture affect memory addressing and burst continuity?

Address space is linear and contiguous across both 64 Mb dies; the controller sees a unified 128 Mb map. However, linear bursts crossing the 64 Mb boundary are not supported - burst wrap occurs at die boundaries. Wrapped bursts (16–128 bytes) operate seamlessly within each die, and hybrid burst mode allows one wrapped burst followed by linear burst within the same die.

Can S70KS1283GABHA020 operate with only single-ended clock (CK), or is differential clock (CK/CK#) mandatory?

Single-ended clock (CK only) is fully supported and requires 11 total signals (CS#, CK, RWDS, DQ[7:0], RESET#). Differential clock (CK/CK#) is optional and adds one pin (CK#) for improved noise immunity and timing margin - particularly beneficial in automotive ECU layouts with high EMI. Both configurations use identical command protocol and timing specifications.