Renesas 71V3557S75BG, Synchronous SRAM - SDR (ZBT), 4.5 Mbit (128K x 36), 7.5 ns access time, Parallel interface, 3.135V–3.465V supply, 0°C–70°C, 119-PBGA (14x22 mm), Surface Mount.
| Parameter | Value |
|---|---|
| Memory type | Volatile |
| Mounting | Surface Mount |
| Supply voltage | 3.135V ~ 3.465V |
| Memory interface | Parallel |
| Operating temperature | 0°C ~ 70°C (TA) |
| Package | Bulk |
| Technology | SRAM - Synchronous, SDR (ZBT) |
| Access time | 7.5 ns |
| Memory size | 4.5Mbit |
| Memory format | SRAM |
| Case | 119-BGA |
| Memory organization | 128K x 36 |
The 119-ball BGA (14x22 mm body) is a fine-pitch array that demands solder-paste stencil design, X-ray inspection, and reflow profiling. No socket exists for prototyping — first-article boards need the BGA placed. The supplier device package is 119-PBGA, and the mounting type is surface mount. For a repair technician: this is not a hand-solderable part; a failed SRAM means board-level rework with a BGA station or scrapping the board.
Access time is 7.5 ns, and the memory is organized as 128K x 36 bits (4.5 Mbit total).