The Qimonda HYB18H512321BF Internet Data Sheet provides specifications, features, and electrical characteristics for the 512‑Mbit GDDR3 graphics RAM.
The HYB18H512321BF is a 512‑Mbit GDDR3 graphics RAM designed for high‑bandwidth PC graphics applications. It features an 8‑bank architecture with a 4n pre‑fetch design, differential clock inputs, and support for both 1.8 V and 2.0 V VDDQ IO voltages.
The data sheet details the chip’s organization (2048K × 32 × 8 banks), supported CAS latencies (7‑17), burst lengths (4 and 8), and package type (PG‑TFBGA‑136). Electrical specifications, timing parameters, and boundary‑scan information are also provided for designers.
| Organization | 2048K × 32 × 8 banks |
|---|---|
| VDDQ IO voltage | 2.0 V (or 1.8 V for revision 11/12/14) |
| CAS latencies | 7‑17 |
| Burst length | 4 and 8 |
| Package | PG‑TFBGA‑136 (10 mm × 14 mm) |
| Refresh interval | 8k Refresh (32 ms) |
It uses a PG‑TFBGA‑136 package measuring 10 mm × 14 mm.
The chip supports 2.0 V VDDQ IO voltage and, for the 11/12/14 revision, 1.8 V VDDQ IO voltage.
Burst length is fixed to 4 and 8.