R1LP5256ESA-7SI#B0, 256Kbit (32K x 8) Parallel SRAM, 70 ns access time, 4.5V ~ 5.5V supply, -40°C to 85°C, 28-TSOP, Bulk.
| Parameter | Value |
|---|---|
| Memory type | Volatile |
| Mounting | Surface Mount |
| Voltage | 4.5V ~ 5.5V |
| Memory interface | Parallel |
| Operating temperature | -40°C ~ 85°C (TA) |
| Package | Bulk |
| Technology | SRAM |
| Access time | 70 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 | 70ns |
Housed in a 28-TSOP (11.80 mm body width) surface-mount package. The 0.465-inch (11.80 mm) width is the standard thin small-outline footprint for 28-pin SRAMs; it shares a common pad layout with other 28-TSOP parallel memory devices. Mounting is surface-mount only — no through-hole option.
No. The supply range is 4.5V to 5.5V — this is a 5V-only SRAM. Driving it from a 3.3V controller requires external level shifters on the address, data, and control lines.
No official replacement or successor is listed. The part is still active, so a direct replacement is not required at this time.