Infineon Technologies CY7C1370DV25-250AXCT

Overview

CY7C1370DV25-250AXCT from Cypress Semiconductor is a 18-Mbit (512 K × 36) synchronous pipelined SRAM with NoBL™ architecture, designed for high-throughput memory subsystems in networking and telecom infrastructure. It operates at 250 MHz with zero wait states, delivers 2.6 ns clock-to-output time, supports byte-write via four BW inputs, and uses dual 2.5 V supplies (VDD core, VDDQ I/O).

For engineers reviewing the CY7C1370DV25-250AXCT datasheet, CY7C1370DV25-250AXCT pinout, CY7C1370DV25-250AXCT application, or CY7C1370DV25-250AXCT equivalent, key selection criteria include pipelined burst timing, synchronous self-timed write control, JTAG boundary scan support, and compatibility with ZBT™-based system designs requiring back-to-back read/write transitions.

Technical Context

The device implements fully registered synchronous interfaces: all address, control, and data inputs are latched on the rising edge of CLK, while outputs pass through output registers also clocked by CLK. Its NoBL™ logic eliminates bus latency by enabling true back-to-back read/write operations without wait states, sustaining full 250 MHz throughput across consecutive cycles.

Burst addressing is configurable via the MODE pin (interleaved or linear), and write operations are controlled synchronously using WE and four byte-write selects (BWa–BWd). Output drivers are automatically three-stated during write data phases to prevent bus contention, independent of OE state.

Key Specifications

Pinout & Package

Package: 100-pin TQFP (JEDEC-standard Pb-free), 14 × 14 mm body, 0.5 mm pitch. Pin layout optimized for signal integrity in high-speed memory buses with dedicated VDDQ/VSS pairs adjacent to DQ groups.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IDT72V2115L15PF and IS61WV102436B, the CY7C1370DV25-250AXCT uniquely combines 250 MHz operation, 36-bit + parity I/O, JTAG testability, and configurable burst modes-making it optimal for next-generation telecom and networking systems demanding both performance and production test coverage.

Availability

CY7C1370DV25-250AXCT is available at Aetrix Electronics and suitable for network packet buffering, telecom line card memory, baseband processing cache, and industrial real-time controller applications requiring stable component supply across extended product lifecycles.

Supply support for CY7C1370DV25-250AXCT 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 solutions for industrial, automotive, and communications markets.

This device belongs to Cypress's NoBL™ SRAM product line, engineered specifically for zero-latency, high-frequency memory subsystems in packet-switched infrastructure where deterministic timing and burst efficiency are critical.

FAQ

What is the function of the MODE pin on CY7C1370DV25-250AXCT?

The MODE pin is a static configuration input that selects burst addressing order: tied HIGH (or left floating) enables interleaved burst, while pulled LOW selects linear burst. It must remain stable during device operation and is sampled at power-up initialization. This setting determines how the internal address counter increments during burst reads/writes and cannot be changed dynamically.

How does the ZZ pin reduce power consumption?

The ZZ pin places the device into deep sleep mode when asserted LOW, reducing core supply current (ICC) to ≤70 mA typical while retaining memory contents. In this state, CLK, CEN, and all control inputs are ignored except ZZ itself. Exit from ZZ mode requires ZZ HIGH followed by two valid CLK cycles before normal operation resumes.

Can CY7C1370DV25-250AXCT operate with only one power supply?

No. The device requires two independent 2.5 V supplies: VDD (core logic) and VDDQ (I/O interface). These must be decoupled separately per JEDEC TQFP layout guidelines. Mixing or sharing supplies violates absolute maximum ratings and causes timing violations or data corruption due to I/O-to-core voltage mismatch.

Is the ADV/LD pin required for non-burst operation?

Yes. Even in single-access mode, ADV/LD must be driven LOW before each new address load to ensure correct address capture. During burst sequences, ADV/LD is held HIGH to auto-increment the internal counter. Leaving ADV/LD unconnected or floating risks metastability and unpredictable address behavior on the first access after deselect.