256-MBIT SYNCHRONOUS DRAM The IS42S16160B-6BL is a 256Mb (16M x 16) Synchronous Dynamic RAM (SDRAM) manufactured by Integrated Silicon Solution Inc. (ISSI). Below are its key specifications, descriptions, and features:
### **Specifications:**
- **Density:** 256Mb (16M words × 16 bits)
- **Organization:** 4 banks × 4M words × 16 bits
- **Voltage Supply:** 3.3V ± 0.3V
- **Speed Grade:** -6BL (6ns access time, 166MHz clock frequency)
- **Package:** 54-pin TSOP-II (400mil width)
- **Refresh Mode:** Auto-refresh and self-refresh
- **Refresh Cycles:** 4096 refresh cycles every 64ms
- **CAS Latency (CL):** 2, 3 programmable
- **Burst Length:** 1, 2, 4, 8, or full page
- **Operating Temperature Range:** Commercial (0°C to +70°C) or Industrial (-40°C to +85°C)
### **Descriptions:**
- Fully synchronous operation with pipeline architecture.
- Supports burst read and write operations.
- Programmable burst length and burst sequence (sequential or interleave).
- Auto precharge option for each burst access.
- Compatible with JEDEC-standard SDRAM specifications.
### **Features:**
- **High-Speed Performance:** Up to 166MHz operation.
- **Low Power Consumption:** Standby and self-refresh modes reduce power usage.
- **Single 3.3V Power Supply:** Simplifies system design.
- **4 Internal Banks:** Enables concurrent operations.
- **Data Mask (DM) Control:** Allows byte-wise write operations.
- **RoHS Compliant:** Lead-free and environmentally friendly.
This SDRAM is commonly used in networking, telecommunications, and embedded systems requiring high-speed memory access.
