Infineon Technologies CY7C09179V-12AC

Overview

CY7C09179V-12AC from Cypress Semiconductor is a 3.3V, 32K × 9 synchronous dual-port static RAM with true dual-ported architecture, pipelined/flow-through operation modes, 12 ns max clock-to-data access time (pipelined), 50 MHz max pipelined clock frequency, and 100-pin TQFP package - used in high-speed inter-processor communication buffers and real-time DSP data exchange systems.

For engineers reviewing the CY7C09179V-12AC datasheet, CY7C09179V-12AC pinout, CY7C09179V-12AC application, or CY7C09179V-12AC equivalent, this device supports simultaneous independent read/write access to shared memory, burst counter-driven address sequencing, dual chip enable for depth expansion, and low-power CMOS design optimized for deterministic timing in embedded control and telecom infrastructure.

Technical Context

The CY7C09179V-12AC implements a fully synchronous dual-port SRAM core with independent left/right clock domains (CLKL/CLKR), each supporting pipelined output mode (tCD2 = 12 ns) or flow-through mode (tCD1 = 25 ns). Address strobes (ADSL/ADSR) load internal burst counters, enabling sequential memory access without external address generation.

Each port features dedicated control signals: CE0/CE1 for hierarchical chip enable, R/WL/R/WR for direction control, OEL/OER for output gating, and FT/PIPEL/FT/PIPER to select latency vs. throughput trade-off. The device uses 0.35-μm CMOS process and supports both TTL- and CMOS-level standby current states (ISB1–ISB4).

Key Specifications

Pinout & Package

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

Key Features

Applications

Equivalent & Alternatives

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

Compared with IDT70V27L12PF, CY7C09179V-12AC delivers integrated burst addressing and dual CE flexibility at no pin count penalty; versus CY7C09469V-12AC, it offers lower power and cost where 32K × 9 capacity suffices.

Availability

CY7C09179V-12AC is available at Aetrix Electronics and suitable for telecom infrastructure, industrial PLCs, medical imaging subsystems, and real-time DSP platforms requiring stable component supply across extended production lifecycles.

Supply support for CY7C09179V-12AC 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, emphasizing reliability, low power, and deterministic timing.

The CY7C09x79V/89V/99V family targets high-speed inter-processor communication and real-time data buffering in telecom, industrial control, and medical electronics - prioritizing dual-clock domain isolation and hardware-accelerated burst access.

FAQ

What is the maximum operating frequency in pipelined mode?

The CY7C09179V-12AC supports up to 50 MHz in pipelined mode, corresponding to a 20 ns clock cycle time (tCYC2). This is verified under commercial temperature range (0°C to +70°C) and 3.3 V ± 300 mV supply, with load conditions matching Figure 5's derating curve for 10 pF capacitance.

Can both ports access the same memory location simultaneously?

Yes - the device uses true dual-ported memory cells enabling simultaneous read/write access to any address. However, simultaneous writes to the same location produce undefined final data; simultaneous read/write is deterministic and supported per datasheet functional description on page 2.

Does the device support burst mode without external address generation?

Yes - asserting CNTENL/CNTENR LOW while ADSL/ADSR is HIGH enables internal burst counter increment on each clock rising edge. The counter wraps automatically across the full 32K address space, eliminating need for external address logic in streaming applications.

What is the purpose of the dual CE0/CE1 input scheme?

The dual CE0/CE1 pair implements hierarchical chip enable: CE0 must be LOW and CE1 HIGH to activate a port. This allows multi-chip depth expansion where CE1 serves as bank select and CE0 as per-chip enable - reducing control signal fanout and improving noise immunity in large memory arrays.