Cypress CY7C1543KV18-400BZC, QDR II+ Synchronous SRAM, 72 Mbit (4M x 18), 400 MHz clock, 1.7V–1.9V supply, 165-FBGA (13x15), 0°C–70°C, Tray.
| Parameter | Value |
|---|---|
| Memory type | Volatile |
| Mounting | Surface Mount |
| Supply voltage | 1.7V ~ 1.9V |
| Clock frequency | 400 MHz |
| Memory interface | Parallel |
| Operating temperature | 0°C~70°C(TA) |
| Package | Tray |
| Technology | SRAM - Synchronous, QDR II+ |
| Memory size | 72Mbit |
| Memory format | SRAM |
| Case | 165-LBGA |
| Memory organization | 4M x 18 |
The 400 MHz clock transfers data on both edges of the clock, per QDR II+ architecture.
Housed in a 165-ball FBGA (13x15 mm) footprint, this is a surface-mount BGA package. The ball pitch and layout demand careful decoupling placement — the 1.7 V–1.9 V core rail is tight, and the 400 MHz clock edge needs low-inductance bypass capacitors within 2 mm of the BGA pads.
As the part is obsolete, buyers urgently need a drop-in or functional alternative to continue their design or repair.
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