Infineon Technologies CYD09S36V18-200BBXC

Overview

CYD09S36V18-200BBXC from Cypress Semiconductor is a 9-Mbit (256 K × 36) synchronous true dual-port SRAM with independent 36-bit ports, 200 MHz SDR interface, 1.8 V/1.5 V core supply, and deterministic collision resolution logic for real-time inter-processor communication in telecom line cards.

For engineers reviewing the CYD09S36V18-200BBXC datasheet, CYD09S36V18-200BBXC pinout, CYD09S36V18-200BBXC application, or CYD09S36V18-200BBXC equivalent, this device supports pipelined/flow-through mode selection, echo clocks, variable impedance matching (VIM), mailbox interrupts, and burst counter operations - all critical for high-reliability packet buffering and shared-memory co-processing.

Technical Context

This device implements two fully independent synchronous ports, each with configurable 36-bit data bus, 18 address bits (A0–A17), four byte enables (BE[3:0]), and separate R/W, CE0/CE1, OEN, and clock control. Collision detection is deterministic and outputs busy flags and first-busy address readback on back-to-back cycles.

Each port supports selectable I/O standards (1.8 V LVCMOS, 2.5 V LVCMOS, Extended HSTL, LVTTL), echo clocking for timing margin improvement, and DLL-based clock alignment. The internal burst counter and mailbox with interrupt flags enable efficient sequential access and inter-processor messaging without external arbitration logic.

Key Specifications

Pinout & Package

Package: 256-ball Fine-Pitch BGA (FBGA), RoHS-compliant, 17 mm × 17 mm body, 1.0 mm ball pitch, bottom-side thermal pad not present. Pinout conforms to FullFlex36 family layout (Figure 2, Rev. *M).

Key Features

Applications

Equivalent & Alternatives

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

Compared with CYD09S36V18-200BBXC, the -250 variant trades timing margin for bandwidth headroom, while the ISSI part sacrifices feature richness for lower unit cost - making the Cypress device optimal for systems requiring deterministic inter-processor coordination without added logic.

Availability

CYD09S36V18-200BBXC is available at Aetrix Electronics and suitable for telecom line cards, network processor subsystems, industrial PLC I/O hubs, and avionics data concentrators requiring stable component supply across extended product lifecycles.

Supply support for CYD09S36V18-200BBXC 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 real-time determinism.

CYD09S36V18 belongs to the FullFlex36 family - engineered specifically for synchronous dual-port applications demanding deterministic arbitration, flexible I/O interfacing, and integrated messaging primitives in space-constrained systems.

FAQ

What is the maximum operating temperature range for CYD09S36V18-200BBXC?

The device is qualified for industrial temperature range: –40°C to +85°C ambient. This rating is validated per JEDEC JESD22-A104 and confirmed in the "Operating Range" section (page 19) of Document Number 38-06082 Rev. *M. No derating is required within this range.

Does CYD09S36V18-200BBXC support both 1.5 V and 1.8 V core supply simultaneously?

No - VCORE must be set to either 1.5 V or 1.8 V (not both). The core voltage is selected at power-up and remains fixed; switching mid-operation is not supported. The IO voltage (VDDIO) is independently configurable per port.

How does deterministic collision resolution work during simultaneous same-address access?

When both ports access the same address on the same clock edge, the left port wins by default. The right port asserts BUSYR, outputs the collided address on its address bus, and sets CNTINTR. The left port's access completes normally with no delay or retry overhead.

Can the burst counter operate across both ports simultaneously?

No - the burst counter is per-port and independent. Each port has its own CNT/MSK, CNTEN, CNTRST, and CNTINT signals. There is no hardware linkage between left and right counters; synchronization must be handled externally via mailbox or software handshake.