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Infineon Technologies CY7C1021BN-15VXI — Memory (DRAM / SRAM / Flash / EEPROM)

CY7C1021BN-15VXI Infineon 1Mbit Async SRAM 15ns 44-SOJ

MPNCY7C1021BN-15VXI
Obsolete

Infineon Technologies CY7C1021BN-15VXI, 1Mbit (64K x 16) Asynchronous SRAM, Parallel Interface, 15 ns Access Time, 4.5V ~ 5.5V Supply, -40°C ~ 85°C, Surface Mount 44-BSOJ (0.400", 10.16mm Width), Tube

Infineon Technologies CY7C1021BN-15VXI datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

CY7C1021BN-15VXI specifications
ParameterValue
Memory typeVolatile
MountingSurface Mount
Supply voltage4.5V ~ 5.5V
Memory interfaceParallel
Operating temperature-40°C ~ 85°C (TA)
PackageTube
TechnologySRAM - Asynchronous
Access time15 ns
Memory size1Mbit
Memory formatSRAM
Case44-BSOJ (0.400\", 10.16mm Width)
Memory organization64K x 16
Write cycle time - word, page15ns

Product details

Memory architecture and bus timing

The CY7C1021BN-15VXI is a 1Mbit asynchronous SRAM organized as 64K x 16 bits, accessed through a parallel interface with a 15 ns access time and a matching 15 ns write cycle time — this determines the bus-margin budget for any legacy 5 V controller or DSP that expects a zero-wait-state memory window.

Temperature grade and package — where it fits

The 44-BSOJ package (0.400-inch body width, 10.16 mm) is a surface-mount SOJ footprint — the J-bend leads save board area versus a DIP, but the pitch still allows two-layer PCB routing without micro-vias.

Infineon lists the CY7C1021BN-15VXI as Obsolete. The last-time-buy window has closed; no further production runs are scheduled. Buyers must source from existing distributor stock or the open market.

Frequently asked questions

What are the exact specifications of CY7C1021BN-15VXI?

Memory size: 1Mbit (64K x 16). Technology: Asynchronous SRAM. Interface: Parallel. Access time: 15 ns. Write cycle time: 15 ns. Supply voltage: 4.5V to 5.5V. Operating temperature: -40°C to 85°C. Package: 44-BSOJ (0.400", 10.16mm width), surface mount.

Does CY7C1021BN-15VXI have a direct cross reference or equivalent from other manufacturers?

The evidence does not list a specific cross-reference MPN. However, the 64K x 16 asynchronous SRAM in a 44-SOJ package with 15 ns access time and 5 V supply is a standard JEDEC pinout — several vendors (e.g., ISSI, Alliance Memory, Renesas) offer functionally equivalent parts. Verify the exact timing and package footprint against your PCB before substituting.