Infineon Technologies CYD18S18V18-200BBAXC

Overview

CYD18S18V18-200BBAXC from Cypress Semiconductor is a 18-Mbit (1M × 18) synchronous true dual-port SRAM with independent 18-bit ports, 200 MHz SDR clocking per port, deterministic collision arbitration, and support for 1.5 V/1.8 V core supply. It enables simultaneous read/write access to shared memory in high-throughput inter-processor communication, network packet buffering, and real-time video frame storage.

For engineers reviewing the CYD18S18V18-200BBAXC datasheet, CYD18S18V18-200BBAXC pinout, CYD18S18V18-200BBAXC application, or CYD18S18V18-200BBAXC equivalent, key selection criteria include dual-port bandwidth (3.6 Gbps per port), pipelined/flow-through mode configurability, echo clocking for timing margin improvement, mailbox interrupt support for message passing, and JTAG boundary scan for system-level testability.

Technical Context

This device implements a synchronous dual-port architecture with two independent address/data buses, each supporting 20-bit addressing (1M × 18), 18-bit data width, and selectable pipelined (2-cycle latency) or flow-through (1-cycle latency) read operation. Collision detection logic provides deterministic flag output and first-busy-address readback on simultaneous access to identical locations.

Each port features configurable I/O standards (1.8 V LVCMOS, 2.5 V LVCMOS, or Extended HSTL), variable impedance matching (VIM) for signal integrity, burst counters with mask/mirror registers, and dedicated mailbox registers with interrupt flags for inter-processor messaging. The device uses a 256-ball FBGA package with 1.0 mm pitch and thermal pad.

Key Specifications

Pinout & Package

Package: 256-ball Fine-Pitch Ball Grid Array (FBGA), 15 mm × 15 mm, 1.0 mm ball pitch, with exposed thermal pad (ball A1–A22 / Y1–Y22 layout per FullFlex36/18 family diagrams). Pin functions are defined per port (Left/Right), with dedicated control, data, address, clock, and auxiliary signals.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IS61VPS51218A-200BQI and SN74ALVC7804-200PAG, CYD18S18V18-200BBAXC uniquely integrates mailbox interrupts, echo clocks, and deterministic collision arbitration - making it the only option among the three that supports lock-free inter-processor communication with guaranteed timing predictability.

Availability

CYD18S18V18-200BBAXC is available at Aetrix Electronics and suitable for network packet buffering, real-time video frame storage, multi-core processor cache coherency, and industrial PLC data exchange requiring stable component supply across extended product lifecycles.

Supply support for CYD18S18V18-200BBAXC 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 embedded systems, with expertise in low-power SRAM, PSoC, and USB-C controllers.

CYD18S18V18 belongs to the FullFlex™ Synchronous SDR Dual-Port SRAM product line, engineered specifically for deterministic, high-bandwidth inter-processor communication in networking, video, and industrial automation systems.

FAQ

What is the maximum operating temperature range for CYD18S18V18-200BBAXC?

The CYD18S18V18-200BBAXC is rated for industrial temperature operation from –40 °C to +85 °C. This range is validated per the device's DC and AC specifications in the official datasheet (Document Number 38-06082 Rev. *S), and applies to both 1.5 V and 1.8 V core supply configurations under specified load and timing conditions.

Does CYD18S18V18-200BBAXC support JTAG boundary scan, and how is it implemented?

Yes, CYD18S18V18-200BBAXC fully supports IEEE 1149.1 JTAG boundary scan. Pins TDI, TDO, TMS, TCK, and TRST are dedicated for this function, enabling board-level interconnect testing and in-system programming verification. The boundary scan chain covers all I/O pins and internal logic blocks as documented in Section 18 of the datasheet.

Can the left and right ports operate at different I/O voltage standards simultaneously?

Yes - each port independently supports 1.8 V LVCMOS, 2.5 V LVCMOS, or Extended HSTL I/O standards. Configuration is set via the CONFIG block during initialization, allowing Left Port to interface with a 1.8 V FPGA bank while Right Port connects to a 2.5 V ASIC, without external level translation.

How does the burst counter function, and what address ranges does it support?

The burst counter supports linear increment from any loaded 20-bit starting address (A[19:0]) up to 1M words, with wrap-around controlled by the mask register. It operates autonomously after CNTEN activation, and the CNTINT flag asserts one cycle before reaching the maximum count - enabling precise DMA trigger timing without CPU intervention.