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Infineon Technologies CY7C131-15NXI — Memory (DRAM / SRAM / Flash / EEPROM)

CY7C131-15NXI Cypress 8Kbit Dual-Port SRAM, 15 ns Access

MPNCY7C131-15NXI
Obsolete

Cypress CY7C131-15NXI, 8Kbit (1K x 8) Dual-Port Asynchronous SRAM, 15 ns access time, 4.5V-5.5V supply, -40°C to 85°C, 52-PQFP (10x10), Tray.

Infineon Technologies CY7C131-15NXI datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

CY7C131-15NXI specifications
ParameterValue
Memory typeVolatile
MountingSurface Mount
Supply voltage4.5V ~ 5.5V
Memory interfaceParallel
Operating temperature-40°C ~ 85°C (TA)
PackageTray
TechnologySRAM - Dual Port, Asynchronous
Access time15 ns
Memory size8Kbit
Memory formatSRAM
Case52-BQFP
Memory organization1K x 8
Write cycle time - word, page15ns

Product details

15 ns dual-port SRAM for shared-memory arbitration

The Cypress CY7C131-15NXI is an 8Kbit (organized 1K x 8) dual-port asynchronous SRAM that gives two independent bus masters simultaneous access to a common memory array. The dual-port architecture eliminates the need for external arbitration logic in applications like multiprocessor mailboxes, FIFO buffers, and shared-data stores in industrial controllers or telecom line cards.

5V-only supply — not a 3.3V drop-in

The supply range is 4.5V to 5.5V, so this part cannot be used in a 3.3V-only system without a level translator on the address, data, and control lines.

Cypress (now Infineon) lists the CY7C131-15NXI as obsolete.

Frequently asked questions

Is CY7C131-15NXI obsolete?

Yes, Cypress (Infineon) lists the CY7C131-15NXI as obsolete. There is no official replacement order code published for this speed and package variant.

What is the access time of CY7C131-15NXI?

The access time is 15 ns, which matches the write cycle time (word/page) of 15 ns. This allows a single-cycle read or write from a host with a 66 MHz bus clock.