Infineon Technologies S70KL1282GABHB020

Overview

S70KL1282GABHB020 from Infineon is a 128 Mb pseudo-static RAM (PSRAM) with self-refresh DRAM core, HYPERBUS™ DDR interface, 1.8 V/3.0 V dual-supply support, 200 MHz max clock rate, and 24-ball FBGA package. It serves as high-bandwidth, low-pin-count external memory for microcontrollers and SoCs in automotive instrument clusters and industrial HMIs where SRAM-like simplicity and DRAM density are required.

For engineers reviewing the S70KL1282GABHB020 datasheet, S70KL1282GABHB020 pinout, S70KL1282GABHB020 application, or S70KL1282GABHB020 equivalent, key selection criteria include HYPERBUS™ timing compliance, DCARS-enabled read strobe alignment, hybrid sleep mode current (330 µA at 2.0 V), burst configuration flexibility (16–128 byte wrapped/linear), and AEC-Q100 Grade 2 qualification.

Technical Context

The device implements a stacked-die architecture-two 64 Mb DRAM dies sharing a single HYPERBUS™ interface-with independent power-down control per die. Its self-refresh logic autonomously manages array refresh without host intervention, presenting static RAM semantics to the controller.

HYPERBUS™ operation uses center-aligned command/address transfers on DQ[7:0], followed by DDR data transfers synchronized to CK/CK#; RWDS functions bidirectionally as read-data strobe (phase-shifted for DCARS) or write-data mask, enabling precise timing capture across process/voltage/temperature corners.

Key Specifications

Pinout & Package

Package: 24-ball FBGA (5 mm × 5 mm, 0.8 mm pitch), RoHS-compliant, moisture sensitivity level 3 (MSL3).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar PSRAM/HYPERBUS™ memory applications.

Compared with S27KL0641DPBHB020 and S70KL1282GABHI020, the S70KL1282GABHB020 uniquely combines full 128 Mb capacity, AEC-Q100 Grade 2 qualification, and DCARS-enhanced timing margin - making it the only option qualified for next-generation automotive digital cockpits requiring both memory scale and functional safety readiness.

Availability

S70KL1282GABHB020 is available at Aetrix Electronics and suitable for automotive instrument clusters, industrial HMIs, ADAS camera modules, and edge AI accelerators requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant memory solutions.

Supply support for S70KL1282GABHB020 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 delivers high-density, low-pin-count PSRAM optimized for MCU- and SoC-based embedded systems needing SRAM-like ease-of-use with DRAM economics and bandwidth - targeting automotive, industrial, and IoT edge devices.

FAQ

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

RWDS operates bidirectionally: during reads, it outputs a strobe aligned to read data (center-aligned or DCARS-phase-shifted) to aid sampling; during writes, it serves as an input byte mask, allowing selective updating of DQ[7:0] lanes without full-bus writes. This dual role eliminates need for separate RD/WR strobes and simplifies timing analysis.

Does S70KL1282GABHB020 require external refresh circuitry?

No. The device integrates autonomous self-refresh logic that executes periodic row refreshes without host involvement. The host sees static RAM behavior - no refresh commands, timers, or scheduling are needed. Refresh occurs transparently during idle cycles or initial latency windows, provided burst durations comply with datasheet limits.

Can both 64 Mb dies operate simultaneously in active mode?

No. While the device contains two stacked 64 Mb dies, the HYPERBUS™ interface and control logic are shared. Only one die can be actively accessed or placed in hybrid sleep/deep power down at a time. Concurrent access to both dies is not supported; memory space is linearly mapped across the combined 128 Mb address range.

How does DCARS improve timing margin compared to standard RWDS?

DCARS shifts the RWDS transition edge by one-half clock cycle relative to CK, positioning it at the center of the read data eye instead of its edge. This doubles the effective setup/hold window at 200 MHz, improving robustness against jitter, skew, and voltage droop - especially critical in automotive ECU environments with high EMI and wide temperature swings.