Cypress Semiconductor Corp CY7C1354C-166AXI

Overview

CY7C1354C-166AXI from Cypress Semiconductor is a 9-Mbit (256K × 36) synchronous pipelined SRAM with NoBL™ architecture, designed for high-throughput memory subsystems in networking 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 in TQFP-100 package.

For engineers reviewing the CY7C1354C-166AXI datasheet, CY7C1354C-166AXI pinout, CY7C1354C-166AXI application, or CY7C1354C-166AXI equivalent, key selection criteria include burst order configuration (linear/interleaved), byte-write select granularity (BWa–BWd), synchronous self-timed write timing, and JTAG boundary-scan support for system-level testability.

Technical Context

The CY7C1354C-166AXI implements fully registered synchronous interfaces: all address, control, and data inputs are latched on the rising edge of CLK, and all outputs pass through output registers synchronized to the same edge. Its NoBL™ logic eliminates bus latency by enabling true back-to-back read/write operations without pipeline stalls.

Burst operation is configurable via the MODE strap pin (linear or interleaved), while write sequencing is managed by synchronous WE and four independent byte-write enables (BWa–BWd). The device integrates IEEE 1149.1 JTAG boundary scan and supports ZZ sleep mode for low-power standby.

Key Specifications

Pinout & Package

Package: 100-pin TQFP (14 × 20 × 1.4 mm), Pb-free, with exposed thermal pad (pin 50 = VSS, thermally connected).

Key Features

Applications

Equivalent & Alternatives

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

Compared with IDT72V2115L16PF and IS61WV102436BLL-166TQLI, the CY7C1354C-166AXI uniquely combines NoBL™ zero-latency pipelining, dual-voltage I/O, and JTAG testability - making it optimal for high-reliability telecom and defense systems where timing determinism and production test coverage are critical.

Availability

CY7C1354C-166AXI is available at Aetrix Electronics and suitable for telecom line card buffering, network processor interfacing, and radar signal processing applications requiring stable component supply across extended product lifecycles.

Supply support for CY7C1354C-166AXI 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 and communications infrastructure.

The CY7C1354C belongs to Cypress's NoBL™ SRAM product line, engineered specifically for deterministic, high-throughput memory subsystems in packet-switched networks and real-time signal processing equipment.

FAQ

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

The MODE pin is a static strap input that configures burst address sequencing: tied HIGH for interleaved burst order (e.g., 0,2,4,6,… then 1,3,5,7,…), pulled LOW for linear order (0,1,2,3,…). It must be set at power-up and remain stable during operation - no dynamic reconfiguration is supported.

Does CY7C1354C-166AXI support asynchronous output enable (OE) during writes?

Yes - OE is asynchronous but masked during the data portion of write cycles, upon exit from deselected state, and when the device is deselected. This prevents bus contention by forcing tristate on DQ/DQP pins regardless of OE state during writes, ensuring safe bidirectional I/O handling.

How does the ZZ (sleep) mode affect data retention in CY7C1354C-166AXI?

In ZZ mode, the device enters deep sleep with current draw reduced to <100 µA while maintaining full data retention across the industrial temperature range (–40°C to +85°C). No refresh or external intervention is required - data remains valid as long as VDD is maintained above 2.0 V.

Can CY7C1354C-166AXI operate with VDDQ = 2.5 V while VDD = 3.3 V?

Yes - the device supports independent 3.3 V core supply (VDD) and 2.5 V I/O supply (VDDQ), enabling direct interface to 2.5 V FPGA I/O banks or ASIC cores. This dual-rail configuration is explicitly validated in the datasheet's DC characteristics table and requires separate decoupling for each supply.