16M x 8, 8M x16 128Mb SYNCHRONOUS DRAM The **IS42S16800E-6TL** is a **128Mb (8Mx16) SDRAM** manufactured by **ISSI (Integrated Silicon Solution Inc.)**. Below are its key specifications, descriptions, and features:

### **Specifications:**
- **Density:** 128Mb (8,388,608 words Ã— 16 bits)
- **Organization:** 8M Ã— 16
- **Voltage Supply:** 3.3V Â± 0.3V
- **Speed Grade:** -6 (166MHz clock frequency)
- **Access Time:** 5.4ns (CL=3)
- **Refresh Cycles:** 4,096 refresh cycles every 64ms
- **Operating Temperature Range:** Commercial (0°C to +70°C) or Industrial (-40°C to +85°C)
- **Package:** 54-pin TSOP-II (400mil width)

### **Descriptions:**
- **Synchronous DRAM (SDRAM)** with fully synchronous operation.
- **Internal Pipelined Architecture** for high-speed data transfer.
- **Auto Refresh (CBR) and Self Refresh** modes supported.
- **Programmable Burst Lengths:** 1, 2, 4, 8, or full page.
- **CAS Latency (CL) Options:** 2 or 3.
- **Single 3.3V power supply** with LVTTL-compatible inputs/outputs.

### **Features:**
- **High-Speed Performance:** Supports up to **166MHz** operation.
- **Low Power Consumption:** Auto and self-refresh modes reduce power usage.
- **Burst Read/Write Operations** for efficient data transfer.
- **Four Internal Banks** for concurrent operations.
- **Compatible with JEDEC Standard** (JESD21-C SDRAM specifications).
- **RoHS Compliant** (lead-free).

This SDRAM is commonly used in **networking, telecommunications, and embedded systems** requiring high-speed memory.