EtronTech EM639165 is a high-speed synchronous dynamic random access memory (SDRAM) with features including single 3.3V power supply, fast clock rate, 4-bank operation, and programmable mode registers.
The EM639165 is a high‑speed synchronous dynamic RAM organized as four banks of 2,097,152 words each, providing 8 Mega × 16‑bit capacity. All inputs and outputs are synchronized to the rising edge of the clock and it supports PC133 (133 MHz, CL3) and PC100 (100 MHz, CL2) operation.
The device offers a single 3.3 V (+0.3 V tolerance) power supply, LVTTL interface, and a 54‑pin TSOP package. It includes programmable mode registers, auto‑precharge, self‑refresh (standard and low‑power), and a range of burst options. The datasheet provides detailed pin assignments, functional truth tables, and mechanical dimensions.
| Capacity | 8 Mega × 16 bits |
|---|---|
| Organization | 4 banks × 2,097,152 words × 16 bits |
| Power Supply | 3.3 V ±0.3 V |
| Refresh Cycle | 4096 cycles per 64 ms |
| Self‑Refresh Current (low‑power option) | < 800 µA |
| Package | 54‑pin TSOP, 400 mil (10.16 mm) pitch |
It uses a single 3.3 V supply with a ±0.3 V tolerance.
It performs 4096 refresh cycles every 64 ms.
It is supplied in a 54‑pin TSOP (Thin Small‑Outline Package).