Infineon Technologies CY7C199CN-12ZXC asynchronous SRAM, 256Kbit (32K x 8), 12 ns access time, 4.5V-5.5V supply, 28-TSOP I, tray.
| Parameter | Value |
|---|---|
| Memory type | Volatile |
| Mounting | Surface Mount |
| Supply voltage | 4.5V ~ 5.5V |
| Memory interface | Parallel |
| Operating temperature | 0°C ~ 70°C (TA) |
| Package | Tray |
| Technology | SRAM - Asynchronous |
| Access time | 12 ns |
| Memory size | 256Kbit |
| Memory format | SRAM |
| Case | 28-TSSOP (0.465\", 11.80mm Width) |
| Memory organization | 32K x 8 |
| Write cycle time - word, page | 12ns |
The CY7C199CN-12ZXC is a 256Kbit asynchronous SRAM organized as 32K x 8 bits, with a 12 ns access time that sets the read-cycle floor for the bus master. Packaged in a 28-TSOP I (0.465" body width, 11.80 mm), the surface-mount footprint is common for mid-density SRAMs and routes directly to a standard 28-pin TSOP layout.
No official replacement order code is recorded. For a functional equivalent, look for 256Kbit asynchronous SRAMs in 28-TSOP I with 12 ns access and 5V supply — confirm pin compatibility and timing before substituting.
The part is obsolete but available through independent distribution.