Infineon Technologies S70KS1283GABHB020

Overview

S70KS1283GABHB020 from Infineon is a 128 Mb pseudo-static RAM (PSRAM) with self-refresh DRAM architecture, octal xSPI interface, and dual-voltage support (1.8 V/3.0 V). It delivers up to 400 MBps data throughput at 200 MHz DDR clock rate, features configurable burst lengths (16–128 bytes), and supports Hybrid Sleep and Deep Power Down modes for low-power embedded systems.

For engineers reviewing the S70KS1283GABHB020 datasheet, S70KS1283GABHB020 pinout, S70KS1283GABHB020 application, or S70KS1283GABHB020 equivalent, key selection criteria include octal xSPI timing compliance, RWDS strobe behavior in read/write transactions, DCARS phase-shifted strobe support, 24-ball FBGA package compatibility, and AEC-Q100 Grade 2 automotive qualification (–40°C to +105°C).

Technical Context

This PSRAM implements stacked-die architecture (two 64 Mb dies), with independent power mode control per die. The xSPI interface uses 11–12 signals including single-ended or optional differential CK/CK#, CS#, DQ[7:0], RESET#, and bidirectional RWDS - which serves as refresh latency indicator, read data strobe, and write mask.

It supports linear and wrapped burst modes (8–64 clocks), DDR data transfers on both clock edges, and configurable output drive strength. Refresh is fully autonomous; no host intervention required. DCARS functionality enables RWDS edge placement within the read data eye via a phase-shifted clock derived from CK.

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 S27KL0641DPBHI020 and MT46H128M16LFQ-15E, the S70KS1283GABHB020 uniquely combines 128 Mb density, octal xSPI simplicity, autonomous refresh, and DCARS-enhanced timing margin - making it optimal for space-constrained, high-reliability embedded designs where SRAM-like ease-of-use and DRAM-like density are both essential.

Availability

S70KS1283GABHB020 is available at Aetrix Electronics and suitable for automotive ADAS displays, industrial HMIs, edge AI accelerators, and portable medical imaging devices requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for S70KS1283GABHB020 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 microcontrollers and SoCs - enabling SRAM-like interface simplicity with DRAM-class density and power efficiency.

FAQ

Does S70KS1283GABHB020 require external refresh circuitry?

No. The device integrates autonomous self-refresh logic that manages DRAM array refresh without host intervention. The controller sees only standard xSPI commands; no refresh cycles, timers, or scheduling are needed in firmware or hardware design.

What is the function of the RWDS pin during write transactions?

During write operations, RWDS functions as a write data mask: each bit controls whether the corresponding DQ[7:0] lane accepts data. This enables partial-byte writes without read-modify-write sequences, reducing bus traffic and improving efficiency in byte-aligned update scenarios.

Can both 64 Mb dies operate independently in different power modes?

Yes. The stacked-die architecture allows one die to enter Hybrid Sleep or Deep Power Down while the other remains active and accessible. This enables asymmetric memory partitioning - e.g., keeping firmware code resident while powering down unused data buffers.

Is DCARS supported in all package variants of S70KS1283?

Yes. DCARS functionality is implemented in silicon and enabled by default in all S70KS1283 variants, including the 24-ball FBGA (GABHB020). Its operation depends solely on register configuration and CK frequency - not on package type or ball count.