Cypress Semiconductor Corp CY7C131-55NCT

Mfr. Part

CY7C131-55NCT

Manufacturer

Cypress Semiconductor

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Detailed Description

Dual-port asynchronous SRAM, 8 Kbit total organized as 1K x 8

55 ns access and 55 ns write cycle

5 V supply range 4.5 V to 5.5 V

Parallel interface

Surface-mount 52-pin PQFP 10 x 10 mm package, BQFP variant also noted

Commercial temperature 0 to 70°C

RoHS not applicable

Base product family CY7C131

Available stock 10568 units

Main category Integrated Circuits

Small classification Memory

Key Features

True dual-port SRAM lets two processors access the same memory at the same time

Asynchronous reads and writes for simple timing

55 ns read access for fast data retrieval

55 ns write cycle for quick updates

1K x 8 organization, easy to map and address

Parallel interface, no complex protocols

5 V tolerant design, works in legacy 5 V systems

Commercial temp 0 to 70°C

Proven Cypress reliability

Key Advantages

Simplifies multi-processor communication and data sharing

Reduces glue logic and arbitration complexity

Deterministic timing for real-time systems

Works in existing 5 V designs without redesign

Mature technology with long field history

Y-IC can deliver from stock and help with cross references or upgrades

Packaging

Type PQFP 52-lead, and BQFP 52-lead option noted

Material Molded plastic package with copper leadframe

Size 10 mm x 10 mm body for the PQFP version

Pin configuration 52 pins including per-port address lines, per-port data I/O, per-port chip enable, output enable, read/write control, and handshake/arbitration signals like BUSY or INT depending on revision, plus VCC and GND

Mounting Surface mount, fine-pitch gull-wing leads

Thermal characteristics Commercial operation 0 to 70°C ambient; follow datasheet thermal guidelines for airflow and board layout

Electrical properties Supply 4.5 V to 5.5 V, 55 ns access, 55 ns write cycle, CMOS inputs and outputs, parallel interface, 8 Kbit capacity organized as 1K x 8

Shipment Packaging Bulk

Lifecycle

Status The CY7C131 family is a mature 5 V dual-port SRAM series. Some speed grades and packages may be limited or discontinued in the market. Availability can vary by suffix and lot.

Equivalent or alternative models to consider

- Cypress CY7C131 family with other speed grades and suffixes such as 35 ns or 45 ns variants if available

- IDT Renesas 7130 series 1K x 8 dual-port SRAM, 5 V, similar function and often offered in QFP packages

- Rochester Electronics may offer remanufactured or continued-support versions of legacy 5 V dual-port SRAMs

- Higher-density Cypress dual-port families such as CY7C133 2K x 8 or CY7C134 4K x 8 if you need more memory, noting pinout differences

Important Always check pinout and timing before substituting. If you need exact pin-to-pin compatibility, contact Y-IC via our website and our sales team will verify the best fit and current availability.

Key Application Areas

Multi-processor communication and shared memory

Embedded systems needing fast inter-CPU data exchange

Networking equipment and telecom systems

Industrial control, robotics, motion control

Printers, copiers, and imaging systems

Test and measurement instruments

Video or audio subsystems requiring small shared buffers

Legacy 5 V platforms that need deterministic memory sharing

Datasheet

Y-IC hosts the most authoritative datasheet for CY7C131-55NCT on our product page. For the latest specifications, pin descriptions, and timing diagrams, download the datasheet directly from this page.

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