128Mb: x32 SDRAM is a memory product produced by Micron Technology, Inc. It has PC100 functionality, supports programmable burst lengths of 1, 2, 4, 8, or full page, and has internal banks for hiding row access/precharge. It also supports auto precharge, including concurrent auto precharge and auto refresh modes, as well as self refresh mode.
The MT48LC4M32B2 is a 128‑Mb SDRAM organized as 1 M × 32 × 4 banks. It features a fully synchronous interface, internal pipelined operation, and programmable burst lengths. The device operates from a single +3.3 V + 0.3 V supply and supports CAS latencies of 1, 2, and 3.
Key features include PC100 functionality, auto‑precharge and auto‑refresh modes, LVTTL‑compatible I/Os, and selectable speed grades (-6 at 166 MHz, -7 at 143 MHz). The part is supplied in an 86‑pin TSOP (400 mil) package.
| Capacity | 128 Mbit (1 M × 32 × 4 banks) |
|---|---|
| Speed grade -6 | 166 MHz |
| Speed grade -7 | 143 MHz |
| CAS latency | 1, 2, 3 |
| Supply voltage | +3.3 V + 0.3 V |
| Package | 86‑pin TSOP (400 mil) |
| tRCD (RAS to CAS delay) | 20 ns |
It is supplied in an 86‑pin TSOP (400 mil) plastic package.
The SDRAM operates from a single +3.3 V + 0.3 V power supply.
The device supports CAS latencies of 1, 2, and 3.