Infineon Technologies CYD36S72V18-200BGXC

Overview

CYD36S72V18-200BGXC from Cypress Semiconductor is a 36-Mbit (512K × 72) synchronous true dual-port SRAM with independent 72-bit SDR interfaces per port, 200 MHz clock support, deterministic collision resolution, and 1.5 V/1.8 V core supply-designed for high-bandwidth inter-processor communication in telecom line cards and packet buffer applications.

For engineers reviewing the CYD36S72V18-200BGXC datasheet, CYD36S72V18-200BGXC pinout, CYD36S72V18-200BGXC application, or CYD36S72V18-200BGXC equivalent, key selection criteria include simultaneous 72-bit read/write capability per port, pipelined/flow-through mode configurability, JTAG boundary scan compliance, echo clocking for timing margin improvement, and 484-ball PBGA package compatibility with high-density PCB routing.

Technical Context

This device implements two fully independent synchronous ports sharing a single 512K × 72 memory array, each supporting 200 MHz SDR operation with selectable 1- or 2-cycle read latency. Collision detection logic ensures deterministic arbitration on simultaneous access to identical addresses, generating BUSY flags and enabling first-busy address readback.

Each port features programmable I/O standards (1.8 V LVCMOS, 2.5 V LVCMOS, or Extended HSTL), variable impedance matching (VIM) via ZQ pins, burst counters with interrupt flags, mailbox registers with interrupt signaling, and echo clocks (CQ0/CQ1) synchronized to data valid windows for improved setup/hold margins.

Key Specifications

Pinout & Package

Package: 484-ball plastic BGA (PBGA), 27 mm × 27 mm, 1.0 mm ball pitch, RoHS-compliant. Pin mapping validated per Cypress Document No. 38-06082 Rev. *S, Figure 1 (FullFlex72 484-ball BGA top view).

Key Features

Applications

Equivalent & Alternatives

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

Compared with AS7C36S72P-200BIN and IS61WV102472BLL-200BLI, CYD36S72V18-200BGXC uniquely combines 1.5/1.8 V operation, echo clocking, deterministic arbitration, and JTAG testability - making it optimal for new designs prioritizing signal integrity, low power, and debuggability in high-speed interconnects.

Availability

CYD36S72V18-200BGXC is available at Aetrix Electronics and suitable for telecom infrastructure, network processor interfacing, FPGA-to-FPGA bridging, and real-time video processing applications requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for CYD36S72V18-200BGXC 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 communications, industrial, and automotive markets, with emphasis on signal integrity and system-level integration.

CYD36S72V18 belongs to the FullFlex™ SDR Dual-Port SRAM product line, engineered specifically for deterministic, low-latency, high-bandwidth memory sharing between heterogeneous processors and ASICs in packet-processing and real-time imaging systems.

FAQ

What is the minimum supported core voltage for CYD36S72V18-200BGXC?

The device operates at either 1.5 V ±0.075 V or 1.8 V ±0.09 V core supply, with both voltages fully supported across commercial (0°C to +70°C) and industrial (–40°C to +85°C) temperature ranges. The 1.5 V option reduces dynamic power by ~25% versus 1.8 V at identical frequency and activity factor.

Does CYD36S72V18-200BGXC support asynchronous reset?

Yes - the device includes an asynchronous Master Reset (MRST) input that forces all internal registers, counters, and mailboxes into a known state regardless of clock or enable status. MRST is active-low and must be held for ≥100 ns to guarantee full initialization.

How is echo clock timing related to data valid window?

Echo clocks CQ0L/CQ1L and CQ0R/CQ1R are generated internally and edge-aligned to the center of the DQ valid window. Their rising edges occur at t_DS (data setup) + t_DH (data hold)/2 relative to DQ transitions, enabling receivers to sample data with maximum timing margin without external delay tuning.

Can the burst counter be used independently on each port?

Yes - each port has its own dedicated burst counter (CNT/MSKL/R, CNTENL/R, CNTRSTL/R), mask register, and mirror register. Counters operate autonomously; one port can perform sequential reads while the other executes random accesses without interference or synchronization overhead.