128Mb: x4, x8, x16 DDR333 SDRAM is a storage product produced by Micron Technology. The product uses a 167MHz clock frequency, 333Mb/s/p data rate, and works at a voltage of +2.5V ±0.2V, VDDQ = +2.5V ±0.2V.
The addendum describes Micron's 128 Mb DDR333 SDRAM family, covering three data‑width options (x4, x8, x16) and part numbers MT46V32M4, MT46V16M8 and MT46V8M16. It outlines the device architecture, timing, package options and electrical characteristics needed for designers.
Key features include a 167 MHz clock (333 Mb/s per pin) operation, 2.5 V SSTL_2‑compatible I/O, bidirectional DQS, internal DLL, and support for auto‑precharge and self‑refresh. Both 66‑pin TSOP and 60‑ball FBGA packages are offered, with detailed pin‑out and capacitance data.
| Clock frequency | 167 MHz |
|---|---|
| Data rate per pin | 333 Mb/s |
| I/O voltage | 2.5 V (SSTL_2 compatible) |
| Supply voltage | +2.5 V ±0.2 V |
| Supported data widths | x4, x8, x16 |
| Package types | 66‑Pin TSOP (OCPL) TG, 60‑Ball FBGA (16×9 mm) FJ |
| Average periodic refresh interval | 15.6 µs |
The device operates at a 167 MHz clock.
The SDRAM is offered in x4, x8, and x16 configurations.
Both a 66‑pin TSOP (OCPL) and a 60‑ball FBGA (16 × 9 mm) package are available.
The average periodic refresh interval is 15.6 µs.