Infineon Technologies CYD09S72V18-200BBXI

Overview

CYD09S72V18-200BBXI from Cypress Semiconductor is a 9-Mbit (128 K × 72) synchronous true dual-port SRAM with independent 72-bit SDR interfaces operating at 200 MHz, supporting deterministic collision resolution and mailbox-based inter-processor communication in high-throughput networking and packet buffering applications.

For engineers reviewing the CYD09S72V18-200BBXI datasheet, CYD09S72V18-200BBXI pinout, CYD09S72V18-200BBXI application, or CYD09S72V18-200BBXI equivalent, this device delivers deterministic access control, selectable pipelined/flow-through latency modes, variable impedance matching (VIM), echo clocks, and dual chip enables for depth expansion-critical for FPGA-to-FPGA or ASIC-to-ASIC shared memory architectures requiring simultaneous read/write on both ports.

Technical Context

This device implements two fully independent synchronous ports, each with 72-bit data width, 17 address bits (A0L–A16L / A0R–A16R), eight byte enables (BE[7:0]L/R), and separate R/WL/R/WR control. Each port supports configurable read latency (1–3 cycles) and operates in either pipelined (two-stage) or flow-through mode.

Collision detection is deterministic: simultaneous access to the same address triggers BUSYL/BUSYR flags, outputs the conflicting address on the bus, and asserts CNTINTL/CNTINTR for interrupt-driven recovery. Built-in burst counters, mailbox registers with INTL/INTR flags, and JTAG boundary scan (IEEE 1149.1) support real-time message passing and system-level testability.

Key Specifications

Pinout & Package

Package: 484-ball plastic BGA (PBGA), 19 mm × 19 mm, 1.0 mm ball pitch, RoHS-compliant. Pin layout follows FullFlex72 family specification (Document 38-06082 Rev. *J, Figure 1).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar synchronous dual-port SRAM applications.

Compared with CYD09S36V18-200BAXI, CYD09S72V18-200BBXI delivers double the per-cycle bandwidth and advanced signal integrity features at the cost of larger package and higher pin count; versus CYD18S72V18-200BBXI, it offers identical interface flexibility at half the memory depth and lower power draw-making it optimal for latency-critical, bandwidth-constrained embedded systems.

Availability

CYD09S72V18-200BBXI is available at Aetrix Electronics and suitable for telecom packet buffering, FPGA co-processing memory, industrial motion control, and avionics data recorders requiring stable component supply, long-term lifecycle assurance, and industrial temperature compliance.

Supply support for CYD09S72V18-200BBXI 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 programmable solutions for industrial, automotive, and communications infrastructure markets.

The FullFlex™ SDR Dual Port SRAM product line targets deterministic, high-bandwidth shared-memory architectures in FPGA-based systems, network processors, and real-time control platforms-emphasizing simultaneous access, signal integrity, and hardware-managed arbitration.

FAQ

What is the maximum supported data rate per port for CYD09S72V18-200BBXI?

The device supports up to 200 MHz clock frequency per port, enabling 200 million transfers per second on each 72-bit bus. With single data rate (SDR) operation, this yields 1.44 Gb/s per port (200 MHz × 72-bit) and 2.88 Gb/s aggregate for read+write on one port. Total bidirectional bandwidth across both ports reaches 28.8 Gb/s.

How does deterministic collision resolution work without external arbitration logic?

When both ports access the same memory address in the same clock cycle, the device asserts BUSYL and BUSYR low, outputs the conflicting address on the address bus, and latches the "first busy" address for readback. No external logic is needed-the resolution is fixed in silicon with guaranteed timing, and the CNTINTL/CNTINTR flags notify hosts to initiate recovery sequences.

Can CYD09S72V18-200BBXI operate with different I/O voltages on left and right ports?

Yes. Each port independently supports LVTTL (3.3 V), Extended HSTL (1.4–1.9 V), 1.8 V LVCMOS, or 2.5 V LVCMOS I/O standards. VDDIOL powers the left port I/Os; VDDIOR powers the right port I/Os; VTTL sets the threshold reference for LVTTL mode. This enables heterogeneous system interfacing-for example, connecting to a 1.8 V FPGA on one side and a 3.3 V microcontroller on the other.

Is the 484-ball PBGA package lead-free and RoHS compliant?

Yes. The CYD09S72V18-200BBXI is manufactured in a lead-free, RoHS-compliant 484-ball PBGA package (package code BBXI). It meets JEDEC J-STD-020 moisture sensitivity level 3 (MSL-3) and is qualified for reflow soldering per IPC/JEDEC J-STD-020D.1 specifications.