2M Words x 32 Bits x 4 Banks (256-MBIT) SYNCHRONOUS DYNAMIC RAM The IS42S32800B-7TLI is a synchronous dynamic random-access memory (SDRAM) chip manufactured by Integrated Silicon Solution Inc. (ISSI). Below are its specifications, descriptions, and features based on factual data:
### **Specifications:**
- **Part Number:** IS42S32800B-7TLI
- **Manufacturer:** ISSI (Integrated Silicon Solution Inc.)
- **Type:** 128Mb (4M x 32) Synchronous DRAM (SDRAM)
- **Speed Grade:** -7 (143 MHz clock frequency)
- **Voltage Supply:** 3.3V ± 0.3V
- **Organization:** 4 banks x 4,194,304 words x 32 bits
- **Refresh Cycles:** 4,096 refresh cycles every 64ms
- **CAS Latency (CL):** 2, 3 programmable
- **Operating Temperature Range:** Commercial (0°C to +70°C)
- **Package:** 86-pin TSOP-II (Thin Small Outline Package)
### **Descriptions:**
- The IS42S32800B-7TLI is a high-speed CMOS SDRAM designed for applications requiring high-density and high-bandwidth memory.
- It supports burst read and write operations with programmable burst lengths (1, 2, 4, 8, or full page).
- Features an auto-refresh and self-refresh mode for low-power operation.
### **Features:**
- **High-Speed Operation:** 143 MHz clock frequency (7ns access time).
- **Programmable Burst Length:** Supports 1, 2, 4, 8, or full-page bursts.
- **Auto & Self-Refresh:** Reduces power consumption in standby modes.
- **Single 3.3V Power Supply:** Operates at 3.3V ± 0.3V.
- **Fully Synchronous Operation:** All signals are registered on the positive edge of the clock.
- **4 Internal Banks:** Allows concurrent operations for improved performance.
- **Industrial Standard Pinout:** Compatible with other 128Mb SDRAMs.
This information is based on the manufacturer's datasheet and technical documentation.
