Infineon Technologies CY7C1352F-100AC

Overview

CY7C1352F-100AC from Cypress Semiconductor is a 4-Mbit (256K × 18) synchronous pipelined SRAM with NoBL™ architecture, designed for high-throughput back-to-back read/write operations in networking and telecom data buffers. It operates on a single 3.3V core supply with 2.5V/3.3V I/O compatibility, supports linear or interleaved burst modes, and delivers 4.5 ns clock-to-output delay at 100 MHz.

For engineers reviewing the CY7C1352F-100AC datasheet, CY7C1352F-100AC pinout, CY7C1352F-100AC application, or CY7C1352F-100AC equivalent, key selection criteria include burst order control via MODE pin, synchronous self-timed write timing, byte-write select (BWA/BWB) granularity, and ZZ sleep mode entry/exit timing compliance.

Technical Context

The CY7C1352F-100AC implements a fully pipelined synchronous interface with all inputs registered on the rising edge of CLK and all outputs registered on the same edge. Its NoBL™ logic eliminates bus latency by enabling true consecutive read/write cycles without wait states, using internal burst counters and address steering logic.

It features three synchronous chip enables (CE1 active-low, CE2 active-high, CE3 active-low), asynchronous OE and ZZ controls, and on-chip self-timed write circuitry that latches data on the second clock edge after WE assertion. Burst order (linear/interleaved) is determined by the MODE pin voltage level.

Key Specifications

Pinout & Package

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

Key Features

Applications

Equivalent & Alternatives

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

Compared with IDT72V2115L10PF and IS61WV25618BLL-10TLI, the CY7C1352F-100AC uniquely combines NoBL™ zero-wait-state operation, configurable burst order, and hardware sleep mode - making it optimal for power-aware, high-throughput packet and signal processing buffers.

Availability

CY7C1352F-100AC is available at Aetrix Electronics and suitable for packet buffering in network switches, line card memory in telecom routers, and DSP co-processor data caches requiring stable component supply and long-term lifecycle support.

Supply support for CY7C1352F-100AC 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 logic solutions for communications and industrial markets.

The CY7C1352F belongs to Cypress's NoBL™ SRAM product line, engineered specifically to eliminate bus latency in high-speed packet-processing and real-time signal-path applications requiring deterministic burst access.

FAQ

What is the function of the MODE pin on CY7C1352F-100AC?

The MODE pin selects burst address sequencing: tied to GND for linear burst (00→01→10→11), or to VDD/floating for interleaved burst (00→01→11→10). This setting is sampled at power-up and remains static during operation - no dynamic reconfiguration is supported. The pin has no internal pull-up; external biasing is required for reliable mode selection.

How does the ZZ sleep mode affect timing behavior during wake-up?

Upon deasserting ZZ (HIGH → LOW), the device requires two full CLK cycles before accepting new commands. During this tZZREC period (minimum 2 × tCLK), all inputs except CEN are ignored. The memory retains data throughout sleep, but pending operations at entry are invalidated - software must ensure the device is deselected before asserting ZZ.

Can CY7C1352F-100AC perform byte writes to parity bits DQPA/DQPB?

Yes - DQPA and DQPB are parity I/O pins functionally identical to DQA and DQB. When BWA is asserted, DQPA is written along with DQA; when BWB is asserted, DQPB is written with DQB. Parity byte writes occur synchronously with data writes and follow the same self-timed write timing - no additional control signals are needed.

Is the CY7C1352F-100AC pin-compatible with ZBT™ SRAMs?

Yes - the CY7C1352F-100AC is explicitly designed as pin-compatible and functionally equivalent to industry-standard ZBT™ SRAMs (e.g., IDT72V2115), sharing identical 100-pin TQFP footprint, signal naming, and burst timing behavior. However, it adds NoBL™ enhancements including automatic OE elimination and enhanced ZZ sleep control not present in baseline ZBT devices.