2M Words x 32 Bits x 4 Banks (256-MBIT) SYNCHRONOUS DYNAMIC RAM The IS42S32800B-7BL is a synchronous DRAM (SDRAM) manufactured by ISSI (Integrated Silicon Solution Inc.). Below are its key specifications, descriptions, and features:
### **Specifications:**
- **Density:** 128Mbit (32M x 32-bit)
- **Organization:** 4 banks x 8M words x 32 bits
- **Voltage Supply:** 3.3V ± 0.3V
- **Speed Grade:** -7BL (143MHz clock frequency, 7ns access time)
- **Interface:** Fully synchronous with all signals registered on the positive edge of the clock
- **Refresh:** Auto-refresh and self-refresh modes
- **CAS Latency (CL):** Programmable (2 or 3 cycles)
- **Burst Length:** Programmable (1, 2, 4, 8, or full page)
- **Operating Temperature Range:** Commercial (0°C to +70°C) or Industrial (-40°C to +85°C)
### **Descriptions:**
- The IS42S32800B-7BL is a high-speed CMOS SDRAM designed for applications requiring high bandwidth and low power consumption.
- It supports burst read and write operations for efficient data transfer.
- The device is compatible with JEDEC standards for SDRAMs.
### **Features:**
- **High Performance:** 143MHz operation with 7ns access time.
- **Low Power Consumption:** Supports power-down and self-refresh modes.
- **Programmable Burst Length:** Allows flexible data transfer.
- **Auto Precharge:** Supports auto precharge for improved efficiency.
- **Single 3.3V Power Supply:** Simplifies system design.
- **LVTTL-Compatible Inputs/Outputs:** Ensures compatibility with standard logic levels.
- **4 Banks Operation:** Enables concurrent operations for higher throughput.
This SDRAM is commonly used in networking, telecommunications, and embedded systems requiring high-speed memory access.
