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Infineon Technologies CY7C027-20AXI — Memory (DRAM / SRAM / Flash / EEPROM)

Cypress CY7C027-20AXI 512Kbit Dual-Port SRAM, 20 ns

MPNCY7C027-20AXI
Obsolete

Cypress CY7C027-20AXI, 512Kbit (32K x 16) asynchronous dual-port SRAM, 20 ns access time, 4.5V-5.5V supply, -40°C to 85°C, 100-TQFP (14x14) tray.

Infineon Technologies CY7C027-20AXI datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

CY7C027-20AXI specifications
ParameterValue
Memory typeVolatile
MountingSurface Mount
Voltage4.5V ~ 5.5V
Memory interfaceParallel
Operating temperature-40°C ~ 85°C (TA)
PackageTray
TechnologySRAM - Dual Port, Asynchronous
Access time20 ns
Memory size512Kbit
Memory formatSRAM
Case100-LQFP
Memory organization32K x 16
Write cycle time - word, page20ns

Product details

The CY7C027-20AXI is marked obsolete. For new designs or replacement, the pin-compatible CY7C027-15AXI (15 ns access time, same 100-TQFP footprint, same 5V supply and industrial temperature range) is a direct functional alternative — verify timing margin against your bus cycle before swapping.

20 ns access time and 20 ns write-cycle time let this dual-port SRAM keep up with a 25 MHz to 33 MHz shared-memory bus without wait states. The 32K x 16 organization gives a 16-bit-wide data path, common in DSP or dual-processor mailbox buffers. The 5V-only supply rail (4.5V min to 5.5V max) means no 3.3V operation — level translators are needed for mixed-voltage systems.

Package and temperature — industrial, surface-mount

Housed in a 100-TQFP (14x14 mm) body, surface-mount only. Supply is 4.5V to 5.5V — factor in a 5V rail with ±10% tolerance for the BOM.

Frequently asked questions

Is CY7C027-20AXI obsolete?

Yes, the product status is obsolete. No official successor is recorded. The pin-compatible CY7C027-15AXI (15 ns access time) is a direct functional alternative — verify timing margin for your bus cycle before substituting.

Does CY7C027-20AXI work at 3.3V?

No. The supply voltage range is 4.5V to 5.5V only. 3.3V operation is not supported. Level translators are required for mixed-voltage interfaces.

What is the difference between CY7C027-20AXI and CY7C027-15AXI?

The CY7C027-15AXI has a 15 ns access time versus 20 ns for the -20AXI. The -15AXI is faster but otherwise identical in footprint and function.