Infineon Technologies S71KS512SC0BHB000

Overview

S71KS512SC0BHB000 from Cypress Semiconductor is a 1.8V HyperBus™ Multi-Chip Package integrating 512 Mb (64 MB) HyperFlash™ NOR flash and 64 Mbit (8 MB) HyperRAM™ self-refresh DRAM in a single FBGA-24 package. It delivers DDR interface performance up to 333 MB/s at 166 MHz, supports differential clocking (CK/CK#), dual chip select (CS1#/CS2#), and bidirectional RWDS for latency signaling and write masking. Used in embedded boot code storage with real-time data buffering in automotive instrument clusters.

For engineers reviewing the S71KS512SC0BHB000 datasheet, S71KS512SC0BHB000 pinout, S71KS512SC0BHB000 application, or S71KS512SC0BHB000 equivalent, key selection criteria include HyperBus DDR timing compliance, 1.8V I/O voltage tolerance, dual-memory arbitration behavior, RWDS functional mode switching between read strobe and write mask, and FBGA-24 mechanical compatibility with 6×8 mm PCB footprints.

Technical Context

This MCP implements two independent HyperBus memory controllers sharing a common 8-bit DQ bus and RWDS signal, with separate chip selects (CS1# for HyperFlash, CS2# for HyperRAM) enabling time-multiplexed access. The differential CK/CK# pair defines precise DDR edge alignment for both memories, while RWDS serves as a dynamic latency indicator at transaction start and toggles function based on active device.

Electrical operation requires strict sequencing: only one chip select may be asserted low at a time; VCC and VCCQ are independently supplied but share ground planes (VSS/VSSQ internally connected); RESET# affects HyperFlash only, while RSTO# provides system-level POR indication derived solely from HyperFlash internal state.

Key Specifications

Pinout & Package

Package: ELA024 FBGA-24, 6 mm × 8 mm × 1.0 mm body, 0.4 mm ball pitch, 5×5 ball array with two balls depopulated (A1 marked by chamfer). VSS and VSSQ are internally bonded; CK# is reserved-for-future-use (RFU) in 3.0V variants but active in this 1.8V part.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar HyperBus memory integration applications.

Compared with S71KL512SC0BHB000 and S71KS256SC0BHB000, the S71KS512SC0BHB000 uniquely balances 1.8V compatibility, differential clock robustness, and maximum flash capacity-making it optimal for next-generation automotive and industrial SoCs demanding noise-immune high-bandwidth memory access.

Availability

S71KS512SC0BHB000 is available at Aetrix Electronics and suitable for automotive digital instrument clusters, industrial HMI controllers, and medical diagnostic displays requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for S71KS512SC0BHB000 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

Cypress Semiconductor (now part of Infineon Technologies) designs high-performance memory and microcontroller solutions for automotive, industrial, and IoT applications, with emphasis on reliability and integration.

This part belongs to the HyperBus™ MCP product line, engineered to replace discrete flash+RAM combinations in space-constrained, high-bandwidth embedded systems where signal integrity and board-level simplification are critical.

FAQ

Can S71KS512SC0BHB000 operate with only VCC applied, without VCCQ?

No. Both VCC (core) and VCCQ (I/O) must be powered within 1.7–1.95V simultaneously. The device will not initialize or respond to commands if either rail is missing or out-of-spec. VCCQ powers the DQ, RWDS, and CK/CK# input receivers; omission causes bus contention and undefined state on all I/O pins.

Is RWDS required to be terminated externally during HyperRAM write operations?

Yes. During HyperRAM writes, RWDS functions as an input (write mask), requiring a 10 kΩ pull-up to VCCQ per JEDEC JESD8-12E guidelines. Without termination, the floating RWDS input may cause metastability, leading to corrupted write data or bus lockup. Termination is not needed during HyperFlash operations.

Does RESET# affect HyperRAM functionality?

No. RESET# is connected exclusively to the HyperFlash die. When asserted, it resets only the flash controller, places DQ/RWDS in Hi-Z, and halts all flash operations. HyperRAM remains fully operational and retains its self-refresh state unless CS2# is deasserted or power is cycled.

What is the maximum allowable skew between CK and CK# signals?

The datasheet specifies ≤50 ps differential skew between CK and CK# at the device ball. Exceeding this violates setup/hold timing for DDR sampling and may cause command decode failures or data corruption. Layout must maintain matched trace lengths (<0.5 mm length difference) and controlled impedance (100 Ω differential) from source to S71KS512SC0BHB000 ball B1.