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Infineon Technologies CY7C1020B-12VXC — Memory (DRAM / SRAM / Flash / EEPROM)

Infineon CY7C1020B-12VXC 512Kbit SRAM, 12 ns, 44-SOJ

MPNCY7C1020B-12VXC
Obsolete

Infineon CY7C1020B-12VXC, 512Kbit (32K x 16) Asynchronous SRAM, 12 ns Access Time, Parallel Interface, 4.5V-5.5V Supply, 44-SOJ Surface Mount, 0°C-70°C Commercial Temperature.

$1.9974Ref. price · indicative, final on quote
Infineon Technologies CY7C1020B-12VXC datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

CY7C1020B-12VXC specifications
ParameterValue
Memory typeVolatile
MountingSurface Mount
Supply voltage4.5V ~ 5.5V
Memory interfaceParallel
Operating temperature0°C ~ 70°C (TA)
PackageTube
TechnologySRAM - Asynchronous
Access time12 ns
Memory size512Kbit
Memory formatSRAM
Case44-BSOJ (0.400\", 10.16mm Width)
Memory organization32K x 16
Write cycle time - word, page12ns

Product details

12 ns asynchronous SRAM for legacy 5V bus designs

The Infineon CY7C1020B-12VXC is a 512Kbit asynchronous SRAM organized as 32K x 16 bits, with a 12 ns access time that keeps it viable for late-90s and early-2000s 5V bus architectures. This is a volatile memory — data is lost when power is removed.

The part delivers data within 12 ns of the address being valid.

Infineon (formerly Cypress Semiconductor) has marked the CY7C1020B-12VXC as obsolete.

The package is a 44-lead SOJ with a 0.400" body width and 10.16 mm body width.

Frequently asked questions

What is the replacement for CY7C1020B-12VXC?

There is no official replacement part number listed by Infineon for the CY7C1020B-12VXC. For new designs, look for a current-production asynchronous SRAM in a 44-SOJ or 44-TSOP-II footprint with a 5V supply, 512Kbit x16 organization, and 12 ns or faster access time. Several vendors (ISSI, Alliance Memory, Renesas) offer pin-compatible parts in this density and speed class. For existing BOMs that must use this exact code, the part is sourced through surplus channels.

What voltage does CY7C1020B-12VXC require?

It is a 5V nominal part and will not operate from a 3.3V rail. If your system runs on 3.3V, you need a different SRAM.