Cypress CY14B256LA-SP45XIT, 256Kbit NVSRAM, 45 ns access time, parallel interface, 2.7V ~ 3.6V supply, 48-BSSOP (7.50mm width), -40°C to 85°C, Tape & Reel.
| Parameter | Value |
|---|---|
| Memory type | Non-Volatile |
| Mounting | Surface Mount |
| Supply voltage | 2.7V ~ 3.6V |
| Memory interface | Parallel |
| Operating temperature | -40°C ~ 85°C (TA) |
| Package | Tape & Reel (TR); Cut Tape (CT) |
| Technology | NVSRAM (Non-Volatile SRAM) |
| Access time | 45 ns |
| Memory size | 256Kbit |
| Memory format | NVSRAM |
| Case | 48-BSSOP (0.295\", 7.50mm Width) |
| Memory organization | 32K x 8 |
| Write cycle time - word, page | 45ns |
The 48-SSOP package (0.295" body width, 7.50 mm) is a fine-pitch SSOP — reworkable with hot air if the pad layout has adequate solder mask dams between pins. The Tape & Reel variant (TR suffix) is the standard for automated pick-and-place; the Cut Tape option suits prototype or low-volume builds.
The parallel NVSRAM family has been stable for years; no successor has been announced.
The SP45XIT suffix indicates Tape & Reel packaging; the SP45XI suffix is typically Tube or Tray. The silicon, speed grade, temperature range, and package body are identical. Choose the XIT variant for automated assembly lines that feed from reels.
There is no pin-compatible second-source NVSRAM from another manufacturer at the same density and access time. The CY7C1399BN-12VXIT is a 256Kbit SRAM (volatile) in a similar package, but it loses data on power loss — it is not a functional replacement for the NVSRAM's non-volatile feature. For a non-volatile alternative, consider a serial EEPROM or FRAM, but those require a different interface and software changes.