Infineon Technologies S27KS0643GABHV020

Overview

S27KS0643GABHV020 from Infineon is a 64Mb self-refresh DRAM (PSRAM) with octal xSPI interface, supporting 1.8 V/3.0 V I/O, 200 MHz DDR clock, and 400 MBps data throughput. It delivers pseudo-static operation via on-die refresh control, uses 24-ball FBGA (5 × 5 mm), and targets high-bandwidth embedded memory expansion in automotive infotainment and industrial HMI systems.

For engineers reviewing the S27KS0643GABHV020 datasheet, S27KS0643GABHV020 pinout, S27KS0643GABHV020 application, or S27KS0643GABHV020 equivalent, key selection criteria include xSPI command compatibility, RWDS timing alignment for DDR read strobe, configurable burst lengths (16–128 bytes), hybrid sleep power mode, and AEC-Q100 Grade 2 qualification (-40°C to +105°C).

Technical Context

The device implements an octal xSPI interface with 12-signal bus (CK/CK#, CS#, DQ[7:0], RWDS, RESET#) and supports both single-ended and differential clocking. Its internal DRAM array uses 38-nm process technology and performs autonomous partial or full refresh without host intervention.

Read transactions use bidirectional RWDS as read data strobe (center-aligned with DCARS option) or write mask; latency is indicated at transaction start. Burst configurations include linear, wrapped (8/16/32/64 clocks), and hybrid modes - all configurable via mode registers accessible over xSPI.

Key Specifications

Pinout & Package

24-ball FBGA (5 × 5 mm, 0.8 mm pitch) with ball grid arranged in 5×5 array excluding corner balls. Pin functions defined per Infineon datasheet Rev. *E, page 51–52.

Key Features

Applications

Equivalent & Alternatives

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

Compared with S27KS0643GABHV020, the Cypress-branded variant offers identical functionality and drop-in compatibility, while the ISSI SRAM demands significant interface redesign and adds refresh overhead - making the Infineon HYPERRAM optimal for xSPI-capable SoCs needing compact, low-power memory expansion.

Availability

S27KS0643GABHV020 is available at Aetrix Electronics and suitable for automotive infotainment head units, industrial HMI display controllers, and medical edge imaging processors requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for S27KS0643GABHV020 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 MCUs, and high-performance memory solutions.

This device belongs to the HYPERRAM™ family - designed specifically to replace parallel SRAM and low-density DDR in bandwidth-constrained embedded systems using minimal pins and simplified controller logic.

FAQ

What voltage supplies does S27KS0643GABHV020 require?

The device operates with separate VCC (core array) and VCCQ (I/O buffer) supplies, each configurable for 1.8 V or 3.0 V nominal. Both must be within ±5% tolerance and powered simultaneously. The specific voltage combination is fixed per ordering part number - this variant supports 1.8 V VCC/VCCQ as indicated by the 'G' suffix in the OPN.

Does S27KS0643GABHV020 require external refresh commands from the host?

No. The device contains fully autonomous refresh logic that executes partial or full array refreshes internally without host involvement. The host only issues standard xSPI commands (READ/WRITE/REGISTER ACCESS); refresh timing and scheduling are managed entirely on-die.

How is RWDS used during write operations?

During write transactions, RWDS functions as a write data mask: each rising edge samples one bit of mask data on DQ[0], enabling byte-level write masking. This allows selective updating of portions of a burst without reading-modify-write cycles, reducing bus traffic and power consumption.

Can S27KS0643GABHV020 operate with a single-ended clock only?

Yes. The device supports both single-ended (CK only) and differential (CK/CK#) clocking modes. When using single-ended mode, CK# must be tied to VSS or VCC per datasheet guidance (Section 3.1), and the internal receiver automatically configures for single-ended operation upon power-up.