Infineon Technologies CYD09S72V18-167BBXC

Overview

CYD09S72V18-167BBXC from Cypress Semiconductor is a 9-Mbit (128 K × 72) synchronous true dual-port SRAM with independent 72-bit SDR interfaces per port, 1.8 V core supply, and deterministic collision arbitration-designed for high-bandwidth inter-processor communication in telecom line cards and packet buffer applications operating at 167 MHz.

For engineers reviewing the CYD09S72V18-167BBXC datasheet, CYD09S72V18-167BBXC pinout, CYD09S72V18-167BBXC application, or CYD09S72V18-167BBXC equivalent, key selection criteria include simultaneous read/write access capability, 72-bit bus width per port, 167 MHz clock support, deterministic busy/flag signaling on address collision, and 484-ball PBGA package compatibility with impedance-matched signal integrity features.

Technical Context

This device implements two fully independent synchronous ports, each supporting pipelined or flow-through latency modes, with separate chip enables (CE0/CE1), read/write controls (R/WL/R/WR), and echo clocks (CQ0L/CQ1L, CQ0R/CQ1R) to align data capture timing. Address collision detection triggers deterministic flag assertion and first-busy-address readback within one cycle.

It integrates burst counters with interrupt flags (CNTINTL/CNTINTR), mailbox registers with interrupt signaling (INTL/INTR), variable impedance matching (ZQ0L/ZQ1L, ZQ0R/ZQ1R), and JTAG boundary scan (TCK/TMS/TDI/TDO/TRST). Power management includes low-power standby (LOWSPDL/LOWSPDR) and master reset (MRST).

Key Specifications

Pinout & Package

Package: 484-ball plastic BGA (PBGA), 19 mm × 19 mm, 1.0 mm ball pitch, RoHS-compliant. Pinout conforms to FullFlex72 family layout (Figure 1, Rev. *J).

Key Features

Applications

Equivalent & Alternatives

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

Compared with CYD09S36V18-167BAXC, this part delivers double the per-port bandwidth and larger package for thermal dissipation; versus ISL71091SEH, it offers 67% higher speed and commercial-industrial temperature range at lower cost and power, but lacks radiation hardening.

Availability

CYD09S72V18-167BBXC is available at Aetrix Electronics and suitable for telecom infrastructure, network processor coherency, real-time video buffering, and radar signal processing applications requiring stable component supply across extended product lifecycles.

Supply support for CYD09S72V18-167BBXC 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 U.S.-based semiconductor company specializing in high-performance memory, microcontrollers, and connectivity solutions for industrial and communications markets.

The FullFlex™ synchronous dual-port SRAM product line was engineered specifically for deterministic, high-bandwidth inter-processor communication in carrier-grade networking and real-time embedded systems.

FAQ

What is the maximum supported clock frequency for CYD09S72V18-167BBXC?

The "167" in the part number specifies a guaranteed maximum clock frequency of 167 MHz for both ports under industrial temperature and 1.8 V supply conditions. This is validated per AC switching characteristics in datasheet Rev. *J, Table 26, with setup/hold margins maintained at 167 MHz using echo clocks and proper PCB layout.

Does CYD09S72V18-167BBXC support 1.5 V core operation?

Yes - the device supports 1.5 V ±0.1 V core voltage (VCORE) in addition to 1.8 V, as confirmed in Section "Power Supply Requirements" (page 19) and "Electrical Characteristics" (pages 21–24) of the datasheet. Core voltage selection is fixed at power-up and affects timing parameters and power draw.

How does deterministic collision handling work on this device?

When both ports access the same memory location in the same or consecutive cycles, BUSYL/BUSYR assert within one clock cycle, and the busy address appears on the respective port's address bus on the next rising edge. The first-accessing port proceeds; the second receives a deterministic busy response - no arbitration delay variation occurs.

Can the burst counter be used independently on each port?

Yes - each port has dedicated burst counter control signals (CNTENL/CNTENR, CNTRSTL/CNTRSTR, CNT/MSKL/CNT/MSKR) and interrupt outputs (CNTINTL/CNTINTR). Counters operate autonomously, supporting different initial addresses, wrap points, and interrupt behaviors per port without cross-port dependency.