Infineon Technologies CYD36S36V18-200BGXC

Overview

CYD36S36V18-200BGXC from Cypress Semiconductor is a 36-Mbit (1,024 K × 36) synchronous true dual-port SRAM with independent 36-bit ports, 200 MHz SDR interface, deterministic collision control, and configurable I/O standards including 1.8 V LVCMOS and Extended HSTL. It operates at 1.5 V or 1.8 V core voltage and supports pipelined or flow-through read latency modes for high-speed packet buffering in telecom line cards.

For engineers reviewing the CYD36S36V18-200BGXC datasheet, CYD36S36V18-200BGXC pinout, CYD36S36V18-200BGXC application, or CYD36S36V18-200BGXC equivalent, key selection criteria include dual-port bandwidth (14.4 Gb/s), deterministic busy/flag signaling on address collision, echo clock support for timing margin improvement, and 484-ball PBGA package compatibility with depth-expansion via dual chip enables.

Technical Context

This device implements a synchronous dual-port architecture with two independent clock domains (CLKL/CLKR), each supporting single-data-rate operation up to 200 MHz. Each port features a 20-bit address bus, four byte enables (BE[3:0]), and full-duplex data transfer on separate 36-bit bidirectional data buses (DQ[35:0]L/R).

Collision detection is deterministic and occurs on back-to-back clock cycles; the device outputs a BUSY flag and provides first-busy address readback via the address bus. Internal burst counters, mailbox interrupts, and JTAG boundary scan (IEEE 1149.1) are integrated for system-level synchronization and debug.

Key Specifications

Pinout & Package

Package: 484-ball Plastic Ball Grid Array (PBGA), 27 mm × 27 mm, 1.0 mm ball pitch, RoHS-compliant. Pinout conforms to FullFlex36 family layout (Figure 2, Document 38-06082 Rev. *M, Page 5), with dedicated left/right port signals, dual chip enables (CE0L/CE1L and CE0R/CE1R), echo clocks (CQ0L/CQ1L and CQ0R/CQ1R), and impedance calibration balls (ZQ0L/ZQ1L and ZQ0R/ZQ1R).

Key Features

Applications

Equivalent & Alternatives

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

Compared with AS7C36S36P-200PCN and IS61WV102436BLL-200TQLI, CYD36S36V18-200BGXC uniquely delivers deterministic hardware arbitration, echo-clock timing assistance, and per-port I/O standard selection - reducing PCB layer count, eliminating level shifters, and guaranteeing worst-case latency in real-time systems.

Availability

CYD36S36V18-200BGXC is available at Aetrix Electronics and suitable for telecom line card buffering, network packet switching, FPGA-based protocol acceleration, and industrial real-time control requiring stable component supply and long-term lifecycle assurance.

Supply support for CYD36S36V18-200BGXC 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) is a fabless semiconductor company specializing in high-performance memory, microcontrollers, and programmable analog/digital ICs for industrial, automotive, and communications markets.

CYD36S36V18 belongs to the FullFlex™ Synchronous SDR Dual Port SRAM product line, designed specifically for deterministic, low-latency shared-memory architectures in high-speed networking and real-time embedded systems.

FAQ

What is the maximum supported I/O voltage for CYD36S36V18-200BGXC?

The device supports selectable I/O standards: 1.8 V LVCMOS, Extended HSTL (1.4 V to 1.9 V), and 2.5 V LVCMOS. Core voltage remains fixed at either 1.5 V or 1.8 V. I/O voltage is configured per port via CONFIG block settings and does not require external regulators beyond VDDIO_L/R supplies.

Does CYD36S36V18-200BGXC support depth expansion using multiple devices?

Yes - dual chip enable inputs (CE0/CE1) per port allow seamless depth expansion without external decode logic. When CE0 is asserted and CE1 is deasserted, the device responds to its full address range; asserting both enables partial-depth operation for interleaved addressing across stacked devices.

How does deterministic collision detection work in practice?

When both ports access the same memory location on consecutive clock edges, the device asserts BUSY within one cycle and places the colliding address on the address bus. The host reads this address synchronously on the next rising edge - enabling immediate corrective action without polling or timeout loops.

Can echo clocks (CQ0/CQ1) be disabled or repurposed?

No - echo clocks are dedicated outputs tied to internal clock paths and cannot be disabled or reassigned. They mirror CLKL/CLKR with minimal skew (<150 ps) and are intended solely for source-synchronous capture at the receiving device; using them as general-purpose clocks violates timing specifications.