Infineon Technologies CY7C1354C-166AXC

Overview

CY7C1354C-166AXC from Cypress Semiconductor is a 9-Mbit (256K × 36) synchronous pipelined SRAM with NoBL™ architecture, designed for high-throughput memory buffering in network packet processors and telecom line cards. It operates at 166 MHz with zero wait states, supports 3.3 V core supply and 2.5/3.3 V I/O, and delivers 3.5 ns clock-to-output access time.

For engineers reviewing the CY7C1354C-166AXC datasheet, CY7C1354C-166AXC pinout, CY7C1354C-166AXC application, or CY7C1354C-166AXC equivalent, this device is selected for systems requiring deterministic back-to-back read/write cycles, burst-mode addressing (linear or interleaved), byte-selectable writes, and JTAG boundary-scan testability in space-constrained TQFP layouts.

Technical Context

The CY7C1354C-166AXC implements fully registered synchronous interfaces: all address, control, and data inputs pass through rising-edge-triggered registers, and outputs are driven from output registers synchronized to CLK. Its NoBL™ logic eliminates bus latency by enabling consecutive read/write operations without pipeline stalls.

Burst operation is controlled by ADV/LD and MODE pins, supporting both linear and interleaved address sequences. Write timing is managed by synchronous self-timed circuitry, while OE remains asynchronous for tristate control-automatically disabled during write data phases to prevent bus contention.

Key Specifications

Pinout & Package

Package: 100-pin TQFP (14 × 20 × 1.4 mm), Pb-free, RoHS-compliant, with exposed thermal pad (not electrically connected).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar synchronous pipelined SRAM applications.

Compared with IDT72V2115L16PF and IS61WV102436B, the CY7C1354C-166AXC uniquely combines 36-bit width, dual-VDDQ support, programmable burst order, byte-write select, and IEEE 1149.1 testability - making it the only option meeting full telecom equipment qualification requirements for backplane-facing buffers.

Availability

CY7C1354C-166AXC is available at Aetrix Electronics and suitable for telecom line card buffering, network packet processor cache, and baseband processing memory requiring stable component supply across extended product lifecycles.

Supply support for CY7C1354C-166AXC 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 programmable system-on-chip solutions.

The CY7C1354C belongs to Cypress's NoBL™ SRAM product line, engineered specifically for deterministic, zero-latency memory interfacing in high-speed communications infrastructure and real-time signal processing systems.

FAQ

What is the function of the MODE pin on CY7C1354C-166AXC?

The MODE pin is a static strap input that configures burst address sequencing: tied HIGH for interleaved burst order (e.g., 0, 8, 1, 9…), pulled LOW for linear burst order (e.g., 0, 1, 2, 3…). It is sampled at power-up and remains latched; no dynamic reconfiguration is supported during operation.

Can CY7C1354C-166AXC operate with 2.5 V I/O while using 3.3 V core supply?

Yes. VDD must be 3.3 V ±0.3 V, while VDDQ can be independently set to either 2.5 V ±0.2 V or 3.3 V ±0.3 V. This allows direct interfacing with 2.5 V FPGAs or ASICs without level shifters, provided VDDQ stability meets AC timing requirements.

How does the ZZ (sleep) mode affect power consumption and timing recovery?

In ZZ mode, core current drops to ≤5 µA (typical), and the device retains all data. Exiting ZZ requires ≥100 ns stabilization time before first valid access; CLK must be running, and CEN must be asserted LOW before issuing any command.

Is the CY7C1354C-166AXC pin-compatible with ZBT SRAMs?

Yes - it is explicitly designed as pin-compatible and functionally equivalent to ZBT devices such as the IDT72V2115. Identical pin assignments for address, data, control, and power terminals enable drop-in replacement in existing ZBT-based PCB layouts.