Infineon Technologies CY7C09099V-12AC

Overview

CY7C09099V-12AC from Cypress Semiconductor is a 128K × 8-bit synchronous dual-port static RAM with true dual-port architecture, pipelined/flow-through mode selection, and 100-pin TQFP packaging. It supports simultaneous independent read/write access on left and right ports, delivers 12 ns max clock-to-data (pipelined), operates at 3.3 V, and draws only 115 mA typical active current - used in high-speed FPGA co-processor buffers and real-time video frame stores.

For engineers reviewing the CY7C09099V-12AC datasheet, CY7C09099V-12AC pinout, CY7C09099V-12AC application, or CY7C09099V-12AC equivalent, this device is selected for deterministic latency control in dual-clock domain interconnects, burst-addressed memory expansion, and low-power industrial embedded buffering where simultaneous port arbitration and CMOS-level standby (<10 µA) are required.

Technical Context

This SRAM implements fully synchronous dual-port operation with independent clock domains (CLKL/CLKR), internal burst counters per port, and selectable pipelined (tCD2 = 12 ns) or flow-through (tCD1 = 25 ns) output paths. Address strobes (ADSL/ADSR) load counters, while CNTENL/CNTENR enable auto-incrementing for sequential burst transfers across the full 128K address space (A0–A16).

Chip enable logic requires CE0 ≤ VIL *and* CE1 ≥ VIH to activate a port; asserting CE0 HIGH or CE1 LOW powers down that port's circuitry. FT/PIPE pins independently configure left/right port timing modes, enabling mixed-mode operation - e.g., pipelined left port for CPU writes and flow-through right port for DSP reads.

Key Specifications

Pinout & Package

Package: 100-pin Thin Quad Plastic Flatpack (TQFP), 0.5 mm pitch, body size 14 mm × 14 mm, exposed pad not present.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IDT70V9099L12PF and Renesas R1EX24099AS0C, CY7C09099V-12AC uniquely combines selectable pipelined/flow-through operation, lowest ISB3 (10 µA), and industrial-grade temperature support - making it optimal for power-constrained, timing-flexible embedded buffering where parity or extended temp are unnecessary.

Availability

CY7C09099V-12AC is available at Aetrix Electronics and suitable for industrial PLC I/O modules, FPGA-based vision processors, and edge network packet buffers requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant 3.3 V memory solutions.

Supply support for CY7C09099V-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 industrial, automotive, and communications markets, with emphasis on low-power, high-reliability silicon.

CY7C09099V belongs to Cypress's synchronous dual-port SRAM product line, engineered specifically for deterministic-latency inter-processor communication, real-time video buffering, and FPGA co-processor interfacing in resource-constrained embedded systems.

FAQ

What is the maximum supported clock frequency in pipelined mode for CY7C09099V-12AC?

The CY7C09099V-12AC supports up to 50 MHz in pipelined mode (fMAX2), corresponding to a 20 ns minimum clock cycle time (tCYC2). This is confirmed in the "Switching Characteristics" table on page 7 of the official datasheet (Doc #38-06043 Rev. *C), where -12 speed grade specifies 50 MHz pipelined operation with tCD2 = 12 ns max.

Can the left and right ports operate with different timing modes simultaneously?

Yes - FT/PIPEL and FT/PIPER are independent inputs, allowing left port to run in pipelined mode (FT/PIPEL = HIGH) while right port runs in flow-through mode (FT/PIPER = LOW). This configuration is explicitly supported in the Functional Description (page 2) and enables asymmetric latency tuning for heterogeneous processor interfaces.

Does CY7C09099V-12AC support burst addressing, and how is it initialized?

Yes - each port has a dedicated burst counter loaded via its Address Strobe (ADSL or ADSR). When CNTENL or CNTENR is asserted LOW, the counter increments on every rising CLK edge, generating sequential addresses without external bus cycles. Initialization occurs automatically on ADS assertion, as documented in the Functional Description (page 2) and Pin Definitions (page 4).

What is the recommended power sequencing for CY7C09099V-12AC?

VCC must be stable before applying any input signals, and no input voltage may exceed VCC during power-up (per Maximum Ratings note 10, page 5). Ground should be established first; VCC ramp rate should be monotonic and ≥ 100 µs. This prevents latch-up and ensures reliable initialization of internal registers and output drivers.