4Meg x 32 128-MBIT SYNCHRONOUS DRAM The IS42S32400B-7T is a synchronous DRAM (SDRAM) manufactured by Integrated Silicon Solution Inc. (ISSI). Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:
### **Specifications:**
- **Part Number:** IS42S32400B-7T
- **Type:** 128Mb (4M x 32) Synchronous DRAM (SDRAM)
- **Organization:** 4 banks x 1,048,576 words x 32 bits
- **Voltage Supply:** 3.3V ± 0.3V
- **Speed Grade:** -7T (7ns access time, 143MHz clock frequency)
- **Package:** 86-pin TSOP-II (400mil width)
- **Interface:** Fully synchronous with all signals registered on the positive edge of the clock
- **Refresh:** Auto-refresh and self-refresh modes supported
- **Burst Length:** Programmable (1, 2, 4, 8, or full page)
- **CAS Latency:** Programmable (2 or 3 cycles)
- **Operating Temperature Range:** Commercial (0°C to +70°C)
### **Descriptions:**
- The IS42S32400B-7T is a high-performance CMOS SDRAM optimized for applications requiring high-speed data access.
- It supports burst read and write operations for efficient data transfer.
- The device is compatible with JEDEC standards for SDRAMs.
### **Features:**
- **High-Speed Operation:** Up to 143MHz clock frequency.
- **Low Power Consumption:** Auto power-down and self-refresh modes reduce power usage.
- **Programmable Burst Length:** Supports 1, 2, 4, 8, or full-page bursts.
- **CAS Latency Options:** Configurable for 2 or 3 cycles.
- **Auto Precharge:** Supports auto precharge for improved efficiency.
- **Single 3.3V Power Supply:** Simplifies system design.
- **Industrial Standard Pinout:** Ensures compatibility with other SDRAMs.
This information is based on the manufacturer's datasheet and technical documentation.
