Infineon Technologies S70KL1283DPBHI020

Overview

S70KL1283DPBHI020 from Infineon is a 128 Mb self-refresh DRAM (PSRAM) with octal xSPI interface, operating at 1.8 V or 3.0 V, supporting up to 200 MHz DDR clocking and delivering 400 MBps data throughput. It integrates two 64-Mb stacked dice, features configurable burst lengths (16–128 bytes), hybrid sleep and deep power-down modes, and targets high-bandwidth, low-power embedded memory expansion in microcontroller-based systems.

For engineers reviewing the S70KL1283DPBHI020 datasheet, S70KL1283DPBHI020 pinout, S70KL1283DPBHI020 application, or S70KL1283DPBHI020 equivalent, key selection criteria include octal xSPI timing compliance, RWDS strobe behavior during read/write, partial array refresh support, DCARS phase-shifted strobe capability, and AEC-Q100 Grade 2 qualification for automotive thermal environments.

Technical Context

This PSRAM implements an octal xSPI interface with 11–12 signal bus count depending on single-ended or differential clock configuration. It uses internal self-refresh logic to eliminate host-managed refresh cycles, presenting static RAM-like behavior while retaining DRAM density and cost advantages.

The device supports linear and wrapped burst transfers (8–64 clocks), configurable output drive strength, and dual-voltage I/O (1.8 V/3.0 V). Its stacked-die architecture enables per-die power mode control-only one 64-Mb die may enter Hybrid Sleep or Deep Power Down at a time.

Key Specifications

Pinout & Package

24-ball FBGA (5 mm × 5 mm, 0.8 mm pitch), RoHS-compliant, with 11–12 active terminals depending on clock configuration.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar PSRAM memory expansion applications.

Compared with S27KL0641DPBHI020, the S70KL1283DPBHI020 doubles capacity without increasing board area or changing layout; versus S70KL2563DPBHI020, it trades 125°C support and higher leakage for lower cost and optimized power in industrial+ automotive Grade 2 use cases.

Availability

S70KL1283DPBHI020 is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial HMI panels, and edge AI sensor fusion platforms requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for S70KL1283DPBHI020 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 leadership in industrial and automotive-grade reliability.

The HYPERRAM™ product line delivers high-speed, low-power pseudo-static memory for microcontroller and FPGA-based systems where SRAM density is insufficient and DDR complexity is prohibitive.

FAQ

What is the difference between S70KL1283DPBHI020 and standard DDR SDRAM?

The S70KL1283DPBHI020 is a self-refresh PSRAM with octal xSPI interface, not a DDR SDRAM. It requires no external refresh controller or complex PHY layer - the host only issues xSPI commands. Unlike DDR, it uses a simple 8-bit DQ bus with RWDS strobe instead of DQS, eliminating DLLs and training sequences. Its 24-ball FBGA footprint is significantly smaller than DDR packages.

Does S70KL1283DPBHI020 support true differential clocking?

Yes - the device supports optional differential clock inputs (CK and CK#), increasing the total signal count from 11 to 12. When enabled, CK# must be driven with inverted CK; this configuration improves noise immunity and timing margin at 200 MHz, especially in electrically noisy automotive or industrial environments.

How does the stacked-die architecture affect memory addressing?

Address space is contiguous across both 64-Mb dice: bits A17–A0 select locations within a die, and A18 selects the die (0 or 1). The host accesses the full 128 Mb linearly; no software arbitration is needed. However, power modes (Hybrid Sleep, Deep Power Down) are applied per die - only one die can be in deep sleep while the other remains active.

Can RWDS be used as a write mask without DCARS enabled?

Yes - RWDS functions as a write data mask during WRITE transactions regardless of DCARS configuration. In non-DCARS mode, RWDS transitions align with CK edges and sample DQ values on the rising edge. DCARS only modifies RWDS behavior during READ transactions by introducing a one-clock phase shift to center the strobe in the data eye.