MT48LC16M4A2, MT48LC8M8A2, MT48LC4M16A2 are 64Mb SDRAM chips produced by Micron, supporting PC66-, PC100-, and PC133-standards, with fully synchronous, internal pipelined operation, internal banks, programmable burst length, automatic precharge, self refresh modes, 64ms, 4,096-cycle refresh and other features
The Micron 64 Mb SDRAM family includes the MT48LC16M4A2 (16 M × 4), MT48LC8M8A2 (8 M × 8) and MT48LC4M16A2 (4 M × 16) devices. They are quad‑bank, fully synchronous DRAMs that operate from a single 3.3 V supply and support PC66, PC100 and PC133 memory standards.
Key features include programmable burst lengths (1, 2, 4, 8, full page), auto‑precharge and self‑refresh modes, LVTTL‑compatible I/O, and a range of operating temperatures from commercial to industrial. The document provides functional block diagrams, pin descriptions, timing tables, and electrical characteristics for design engineers.
| Memory density | 64 Mb (x4, x8, x16) |
|---|---|
| Supply voltage | Single +3.3 V |
| Burst lengths | 1, 2, 4, 8, full page |
| CAS latency options | CL = 2, CL = 3 |
| Maximum clock frequency | 166 MHz (≈5.5 ns cycle) |
The device operates from a single +3.3 V power supply.
The memory is organized as a quad‑bank DRAM.
CKE activates (HIGH) and deactivates (LOW) the clock signal.