Infineon Technologies S27KL0642DPBHI030

Overview

S27KL0642DPBHI030 from Infineon is a 64Mb self-refresh DRAM (PSRAM) with HYPERBUS™ interface, operating at 1.8 V or 3.0 V VCC/VCCQ, supporting DDR transfers up to 200 MHz clock rate and 400 MBps throughput. It features bidirectional RWDS strobe, configurable burst lengths (16–128 bytes), partial/full array refresh, and industrial temperature range (–40°C to +85°C) in 24-ball FBGA package. Used as high-bandwidth, low-pin-count external memory for microcontrollers in automotive instrument clusters.

For engineers reviewing the S27KL0642DPBHI030 datasheet, S27KL0642DPBHI030 pinout, S27KL0642DPBHI030 application, or S27KL0642DPBHI030 equivalent, key selection criteria include HYPERBUS™ timing compliance, RWDS phase alignment support, DCARS capability, burst configuration flexibility, and AEC-Q100 Grade 3 qualification for automotive use.

Technical Context

This PSRAM integrates DRAM array with on-die refresh controller and HYPERBUS™ physical layer logic, eliminating host-managed refresh. Its DDR interface uses CK/CK# differential clocking (optional) and 8-bit DQ bus with RWDS as bidirectional data strobe-output during read latency indication and read data capture, input as write mask.

The device implements hybrid sleep and deep power-down modes, supports linear/wrapped burst configurations, and allows dynamic adjustment of output drive strength. Internal register space enables runtime control of burst length, refresh partitioning (1/8 to full array), and DCARS phase offset for optimized read-data eye positioning.

Key Specifications

Pinout & Package

24-ball FBGA (5 × 5 array, 0.8 mm pitch) with ball-out defined per Infineon datasheet Rev. *I, page 49–50. Pin functions validated from Signal Description section (page 9) and Physical Interface chapter.

Key Features

Applications

Equivalent & Alternatives

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

Compared with S27KL0642DPBHI030, the Cypress variant offers drop-in replacement assurance, while the ISSI SRAM demands board-level redesign and host refresh logic - making the Infineon part optimal for new HYPERBUS™-based designs prioritizing density, power, and pin efficiency.

Availability

S27KL0642DPBHI030 is available at Aetrix Electronics and suitable for automotive instrument clusters, industrial HMIs, medical patient monitors, and smart home gateways requiring stable component supply across extended product lifecycles.

Supply support for S27KL0642DPBHI030 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 AG is a German semiconductor manufacturer specializing in power management, sensor, and memory solutions for automotive, industrial, and IoT markets.

This device belongs to the HYPERRAM™ family, designed specifically to replace parallel NOR/NAND and SRAM in MCU-based systems where high bandwidth, low pin count, and self-refresh simplicity are critical.

FAQ

What is the difference between S27KL0642DPBHI030 and S27KS0642DPBHI030?

S27KL0642DPBHI030 and S27KS0642DPBHI030 are identical silicon devices with identical electrical specifications, pinout, and package. The 'L' and 'S' prefixes reflect post-acquisition branding alignment: 'L' denotes Infineon-labeled parts, 'S' denotes legacy Cypress labeling. Both share the same datasheet (002-24692 Rev. *I) and are fully interchangeable in hardware design and firmware.

Does S27KL0642DPBHI030 require external refresh circuitry?

No. S27KL0642DPBHI030 contains an integrated self-refresh controller that autonomously manages DRAM refresh cycles without host intervention. The host only needs to observe initial latency indications via RWDS and limit burst duration per datasheet Section 1 - no external refresh signals or timing control are required.

Can this device operate with single-ended clock only?

Yes. S27KL0642DPBHI030 supports both single-ended (CK only) and differential (CK/CK#) clock modes. In single-ended mode, it uses 11 signal lines (CS#, CK, RWDS, DQ[7:0], RESET#); differential mode adds CK# for improved noise immunity at 12 signals. Configuration is fixed by internal metal option - PBH suffix indicates differential-capable version.

What HYPERBUS™ transaction types does this device support?

S27KL0642DPBHI030 supports full HYPERBUS™ command set: read/write memory array transactions, register read/write (for configuration registers), and status polling. It implements all mandatory timing parameters including tRWR (read-write recovery), tACC (access latency), and tRWDS (RWDS assertion delay), as specified in Infineon datasheet Sections 4.2–4.4 and Table 10.5.