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Infineon Technologies CY7C1399BNL-12ZXCT — Memory (DRAM / SRAM / Flash / EEPROM)

CY7C1399BNL-12ZXCT SRAM 256Kbit 12ns TSOP I Obsolete

MPNCY7C1399BNL-12ZXCT
Obsolete

Infineon CY7C1399BNL-12ZXCT, 256Kbit (32K x 8) asynchronous SRAM, 12 ns access time, 3V–3.6V supply, 28-TSOP I package, Tape & Reel.

Infineon Technologies CY7C1399BNL-12ZXCT datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

CY7C1399BNL-12ZXCT specifications
ParameterValue
Memory typeVolatile
MountingSurface Mount
Supply voltage3V ~ 3.6V
Memory interfaceParallel
Operating temperature0°C ~ 70°C (TA)
PackageTape & Reel (TR)
TechnologySRAM - Asynchronous
Access time12 ns
Memory size256Kbit
Memory formatSRAM
Case28-TSSOP (0.465\", 11.80mm Width)
Memory organization32K x 8
Write cycle time - word, page12ns

Product details

CY7C1399BNL-12ZXCT is listed as Obsolete by Infineon.

12 ns access time in a 3.3V system

This is a 256Kbit asynchronous SRAM organised as 32K x 8, with a 12 ns access time. The supply range is 3V to 3.6V, so it drops straight into a 3.3V rail without a regulator.

Housed in a 28-TSOP I (0.465", 11.80mm width) package, surface-mount. The supplier device package is 28-TSOP I. The 0.50 mm pitch is standard for this form factor; a two-layer board breaks out the outer rows cleanly. The Tape & Reel (TR) option suits automated pick-and-place.

This limits it to indoor, office, or appliance environments.

Frequently asked questions

Can I use CY7C1399BNL-12ZXCT in a 3.3V system?

Yes, the supply range is 3V to 3.6V, so it works directly on a 3.3V rail without level translation.