Infineon Technologies S80KS5123GABHM023

Overview

S80KS5123GABHM023 from Infineon Technologies is a 512 Mb self-refresh DRAM (HYPERRAM™) with octal xSPI interface, operating at 1.8 V. It delivers up to 400 MBps data throughput via DDR transfers on an 8-bit DQ bus synchronized to a 200 MHz differential or single-ended clock, and integrates on-die refresh control for pseudo-static operation in embedded microcontroller systems requiring low-latency external memory expansion.

For engineers reviewing the S80KS5123GABHM023 datasheet, S80KS5123GABHM023 pinout, S80KS5123GABHM023 application, or S80KS5123GABHM023 equivalent, key selection criteria include xSPI command compatibility, configurable burst length (16–128 bytes), hybrid sleep/deep power-down modes, RWDS-based refresh latency signaling, and AEC-Q100 Grade 2 qualification for automotive infotainment and ADAS host processors.

Technical Context

This device implements a dual-die 512 Mb architecture (2 × 256 Mb), where each die operates independently under shared xSPI protocol control. The memory supports linear and wrapped burst modes, with burst lengths of 8, 16, 32, or 64 clocks corresponding to 16–128 byte transfers, and enables partial array refresh (1/8, 1/4, 1/2) to minimize power during idle periods.

Its xSPI interface uses 12 signal lines (CS#, CK/CK#, RWDS, DQ[7:0], RESET#) with LV-CMOS I/O levels, requires continuous clock toggling during latency periods, and signals internal refresh needs via RWDS high assertion during command/address phases - a hardware-managed timing constraint critical for host controller firmware design.

Key Specifications

Pinout & Package

Package: 24-ball FBGA (5 mm × 5 mm, 0.8 mm pitch), RoHS-compliant, industrial and automotive grade variant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-speed external memory expansion applications.

Compared with S27KS0641DPBHV020 and W9825G6JH-6I, the S80KS5123GABHM023 uniquely combines automotive-grade reliability, 512 Mb density in 24-ball FBGA, and hardware-managed refresh - making it optimal for next-gen ADAS and edge AI platforms where pin count, power, and firmware simplicity are co-constrained.

Availability

S80KS5123GABHM023 is available at Aetrix Electronics and suitable for automotive infotainment head units, industrial HMI display controllers, and ADAS camera preprocessing modules requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for S80KS5123GABHM023 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 AEC-Q100-qualified components for safety-critical systems.

The HYPERRAM™ product line targets MCU-based embedded systems needing high-bandwidth, low-pin-count external memory - bridging the gap between SRAM cost and DRAM density with integrated self-refresh intelligence.

FAQ

What is the function of the RWDS pin during read and write operations?

RWDS serves three distinct roles: (1) as a read data strobe output during memory reads, indicating valid DQ data; (2) as a write data mask input during writes, enabling byte-level masking; and (3) as a refresh latency indicator - driven HIGH during command/address phases when internal refresh is pending, requiring host to insert additional clock cycles before data transfer begins.

Does the S80KS5123GABHM023 require external refresh circuitry?

No. The device contains fully autonomous self-refresh logic that manages DRAM cell refresh without host intervention. The host sees it as pseudo-static RAM (PSRAM), eliminating the need for refresh commands, timers, or dedicated controller resources - though it must respect RWDS latency signaling and limit burst durations to allow internal refresh windows.

How does the hybrid burst mode operate across the dual-die architecture?

Hybrid burst mode executes one wrapped burst (e.g., 64-byte wrap) on Die 0, then transitions to linear burst on Die 1 - but only for 256 Mb segments. Linear bursts cannot cross die boundaries; the device enforces this via internal address decoding. This mode optimizes sequential access across die boundaries without requiring host-side address remapping or interleaving logic.

What are the implications of using single-ended versus differential clock (CK/CK#)?

Single-ended CK supports basic operation with reduced layout complexity but limits noise immunity and maximum reliable trace length. Differential CK/CK# improves jitter tolerance and EMI resilience, enabling robust operation at 200 MHz over longer PCB traces or in electrically noisy automotive environments - required for AEC-Q100 Grade 2 compliance in production deployments.