Infineon Technologies CY7C09379V-12AXC

Overview

CY7C09379V-12AXC from Cypress Semiconductor is a 3.3V, 32K × 18-bit synchronous dual-port static RAM with pipelined/flow-through operation, 100-pin TQFP package, and 50 MHz maximum pipelined clock frequency. It supports simultaneous independent read/write access on left and right ports, features burst counters for interleaved memory addressing, and delivers 12 ns max clock-to-data access in pipelined mode - used in high-speed FPGA co-processor buffers and real-time video frame stores.

For engineers reviewing the CY7C09379V-12AXC datasheet, CY7C09379V-12AXC pinout, CY7C09379V-12AXC application, or CY7C09379V-12AXC equivalent, key selection criteria include x18 data width support, dual-byte enables (LB/UB), CMOS-level standby current (10 μA), and pipelined vs. flow-through mode selection via FT/PIPE pin - critical for deterministic timing in synchronized multi-processor interconnects.

Technical Context

This device implements true dual-ported SRAM architecture with fully synchronous interfaces on both ports, using separate clock (CLKL/CLKR), address (A0L–A14L / A0R–A14R), and control (CE0/CE1, R/W, OE, ADS) signals per port. Each port includes an internal burst counter enabled by CNTEN and reset by CNTRST, supporting automatic sequential addressing without external address generation.

Two configurable output modes are supported: pipelined (FT/PIPE = HIGH), delivering 12 ns tCD2 access at 50 MHz, and flow-through (FT/PIPE = LOW), eliminating pipeline latency with 25 ns tCD1 access. Byte controls (LBL/UBL, LBR/UBR) allow independent 9-bit upper/lower byte access for x18 organization, matching 16-bit or 18-bit bus widths.

Key Specifications

Pinout & Package

Package: 100-pin Thin Quad Plastic Flatpack (TQFP), 14 mm × 14 mm body, 0.5 mm pitch, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IDT70V27L12PF8 and IS61WV3218BLL-12MLI, CY7C09379V-12AXC uniquely combines x18 width, per-port pipelining, and hardware burst counters - reducing external logic count and guaranteeing sub-20 ns read determinism in multi-clock embedded systems.

Availability

CY7C09379V-12AXC is available at Aetrix Electronics and suitable for telecom infrastructure, industrial motion control, broadcast video processing, and automotive ADAS applications requiring stable component supply, long-lifecycle support, and guaranteed industrial temperature performance.

Supply support for CY7C09379V-12AXC 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 logic solutions for industrial, automotive, and communications markets.

CY7C09379V belongs to Cypress's synchronous dual-port SRAM product line, designed specifically for deterministic, low-latency shared memory in multi-processor and FPGA-based real-time systems where concurrent access and precise timing control are mandatory.

FAQ

What is the difference between flow-through and pipelined output modes?

In pipelined mode (FT/PIPE = HIGH), data is registered on the output path, yielding faster cycle times (20 ns min) and 12 ns clock-to-data access - ideal for throughput-critical applications. In flow-through mode (FT/PIPE = LOW), data bypasses the register, eliminating pipeline latency for zero-cycle read access (25 ns tCD1), suited for real-time control loops requiring deterministic timing.

Can CY7C09379V-12AXC be used in a 16-bit data bus configuration?

Yes - the device supports x18 organization but allows x16 operation by tying I/O16L/I/O17L and I/O16R/I/O17R to unused or grounded states. The lower 16 bits (I/O0–I/O15) function identically to x16 devices, and byte controls (LBL/LBR, UBL/UBR) remain fully operational for 8-bit granularity access.

How does the burst counter operate during simultaneous port access?

Each port has an independent burst counter controlled by its own CNTEN and CNTRST signals. When CNTEN is asserted, the counter increments on each rising CLK edge - regardless of activity on the opposite port. ADS loads the counter with the external address, enabling synchronized burst sequences across ports without cross-port dependency.

Is CY7C09379V-12AXC pin-compatible with earlier Cypress dual-port SRAMs?

It shares the same 100-pin TQFP footprint and core signal mapping (CLK, CE, R/W, OE, ADS, A0–A14, I/O0–I/O17) with CY7C09279V and CY7C09369V, but differs in pin assignments for A15 and NC locations per density variant. Full compatibility requires verifying address depth (A14 used for 32K) and confirming FT/PIPE pin behavior matches design intent.