This document is about HYS 64/72V32300GU SDRAM-Modules. It is a 168-pin Unbuffered DIMM Modules that use 256M Synchronous DRAMs (SDRAMs) and support PC100-222, PC133-333 and PC133-222 versions.
The HYS 64/72V32300GU series are 168‑pin unbuffered DIMM modules that use 256 Mbit SDRAM devices organized as 32 M × 64 or 32 M × 72 in a single memory bank. They are designed for PC‑100, PC‑133 and PC‑133‑333 applications and are fully compatible with Intel’s Rev. 1.0 module specification.
Key features include a 3.3 V (+0.3 V) supply, programmable CAS latency and burst length, LVTTL‑compatible I/Os, Serial Presence Detect with E²PROM, and detailed electrical ratings such as input high voltage of 2.0 V, storage temperature range –55 °C to +150 °C, and maximum clock frequencies up to 133 MHz for –7 and –7.5 speed grades.
| Supply voltage | 3.3 V (+0.3 V) |
|---|---|
| Package type | 168‑pin unbuffered DIMM |
| Memory organization | 32 M × 64 or 32 M × 72, one bank |
| Input high voltage | 2.0 V + 0.3 V |
| Input low voltage | -0.5 V |
| Maximum clock frequency (‑7 speed grade) | 133 MHz |
| Input capacitance (Cₒ) | 65 pF – 72 pF |
The modules operate from a 3.3 V supply with an additional 0.3 V headroom.
They are available in 32 M × 64 and 32 M × 72 configurations, each with a single memory bank.
The DIMM has 168 pins and is an unbuffered module.