Skip to main content
Log in
Infineon Technologies CY621472E30LL-45ZSXI — Memory (DRAM / SRAM / Flash / EEPROM)

CY621472E30LL-45ZSXI MoBL SRAM, 4Mbit, 45 ns, 2.2 V

MPNCY621472E30LL-45ZSXI
Active

Infineon MoBL® SRAM, 4Mbit (256K x 16), Parallel interface, 45 ns access time, 2.2 V supply, -40°C to 85°C, 44-TSOP II, Tray.

$7.79Ref. price · indicative, final on quote
Infineon Technologies CY621472E30LL-45ZSXI datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

CY621472E30LL-45ZSXI specifications
ParameterValue
SeriesMoBL®
InterfaceParallel
MountingSurface Mount
Operating temperature high-40°C to 85°C (TA)
Frame_size4Mbit
Access time45 ns
Memory typeVolatile
Package_typeTray
Memory formatSRAM
StatusActive
Supply voltage2.2
Memory organization256K x 16
Write cycle time - word, page45ns

Product details

4 Mbit MoBL SRAM in 44-TSOP II — 45 ns access, 2.2 V core

The Infineon CY621472E30LL-45ZSXI is a 4 Mbit MoBL® SRAM organized as 256K x 16 bits, accessed through a parallel interface. The 45 ns access time sets the read-cycle window for the host controller; at 2.2 V supply this part runs from a low-voltage rail. Housed in a 44-pin TSOP II package, it mounts on the board surface and occupies the same footprint as other 44-TSOP II 4 Mbit SRAMs.

2.2 V supply — rail planning and compatibility

This SRAM operates at a nominal 2.2 V supply. That means a dedicated regulator or a 2.2 V rail from a multi-output supply. The MoBL series is designed for low active and standby current, so the 2.2 V rail can share a small LDO with other low-power peripherals without excessive droop.

Frequently asked questions

Where can I buy CY621472E30LL-45ZSXI?

This part is sourced to order through independent distribution. Submit an RFQ for current availability and pricing; the quote confirms stock position and lead time at that moment.

What is the equivalent part for CY621472E30LL-45ZSXI?

The closest functional peer is the CY7C1041GN30-10BVXI, a 4 Mbit (256K x 16) parallel SRAM from the same Infineon family, but with a 10 ns access time and a BGA package. The 10 ns speed grade suits faster bus controllers, though the BGA footprint differs from the 44-TSOP II of the CY621472.

Is CY621472E30LL-45ZSXI compatible with 3.3V?

No, the supply voltage is 2.2 V nominal. Operating at 3.3 V exceeds the rated maximum and will damage the device. A 3.3 V host requires level shifters on the I/O lines.

What is the difference between CY621472E30LL-45ZSXI and CY621472E30LL-55ZSXI?

The only difference is the access time: 45 ns versus 55 ns. The 45 ns version provides tighter timing margin for faster bus controllers; the 55 ns version is more forgiving of slower address setup but may not meet cycle requirements above 18 MHz.