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

Infineon CY7C1021BN-15ZXIT 1Mbit Async SRAM, 15 ns

MPNCY7C1021BN-15ZXIT
Obsolete

Infineon CY7C1021BN-15ZXIT, 1Mbit asynchronous SRAM, 64K x 16 organization, 15 ns access time, 4.5V to 5.5V supply, parallel interface, -40°C to 85°C industrial temperature, 44-TSOP II package, Tape & Reel.

Infineon Technologies CY7C1021BN-15ZXIT datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

CY7C1021BN-15ZXIT specifications
ParameterValue
Memory typeVolatile
MountingSurface Mount
Voltage4.5V ~ 5.5V
Memory interfaceParallel
Operating temperature-40°C ~ 85°C (TA)
PackageTape & Reel (TR)
TechnologySRAM - Asynchronous
Access time15 ns
Memory size1Mbit
Memory formatSRAM
Case44-TSOP (0.400\", 10.16mm Width)
Memory organization64K x 16
Write cycle time - word, page15ns

Product details

The CY7C1021BN-15ZXIT: The 64K x 16 organization provides a 16-bit-wide data bus.

5V-only supply — legacy system fit

The supply range is 4.5V to 5.5V, so this is a 5V-only part. It won't work on a 3.3V bus without level shifters. If your design is a legacy 5V system — say an older industrial controller, a test instrument, or a telecom line card still running on 5V logic — this SRAM plugs straight in. The write cycle time matches the read access time at 15 ns, so back-to-back writes run at the same speed as reads.

Industrial temperature grade — where it goes

The 44-TSOP II package has a 10.16 mm body width. Ships on Tape & Reel.

Infineon lists the CY7C1021BN-15ZXIT as obsolete. That means the manufacturer no longer produces it, and the only channel to source it is the independent surplus/broker market. The -15ZXIT is the industrial-temperature, lead-free, Tape & Reel variant.

Frequently asked questions

Where can I buy CY7C1021BN-15ZXIT and how do I get a price?

The CY7C1021BN-15ZXIT is obsolete from the manufacturer, but we source it through independent distribution. Submit an RFQ — we confirm availability and current pricing at quote time. No stock or price is published because the surplus channel is dynamic.

Is CY7C1021BN-15ZXIT a drop-in replacement for CY7C1021BN-15ZXC?

Yes, the two parts are pin-compatible and share the same 44-TSOP II package, 1 Mbit organization, and 15 ns access time. The -15ZXIT can replace the -15ZXC in any application, but the reverse may not hold if the system requires the wider temperature range.

What is the lead time for CY7C1021BN-15ZXIT from distributors?

Because this part is obsolete, there is no standard factory lead time. Availability depends on surplus inventory. Submit an RFQ — we check current stock and provide a lead-time estimate at quote time.