The UPD4464C-15 is a 65,536-bit (64K) Static Random Access Memory (SRAM) chip manufactured by NEC. It's organized as 8,192 words by 8 bits. SRAMs are known for their fast access times and are commonly used in applications where speed is critical, such as cache memory in computer systems, high-speed data buffers, and embedded systems.
Applications
- Cache Memory: Used in computer systems to store frequently accessed data for fast retrieval.
- Data Buffers: Providing temporary storage for high-speed data transfers.
- Embedded Systems: Used in microcontrollers and other embedded applications requiring fast memory access.
- Instrumentation: Data logging and storage in test and measurement equipment.
- Medical Devices: Used in medical imaging and monitoring systems.
Features
- Fast Access Time: 150ns access time suitable for high-speed applications.
- Static RAM: Requires continuous power to maintain data storage.
- 8K x 8 Organization: Organized as 8,192 words by 8 bits.
- Low Power Consumption: Consumes less power than dynamic RAM (DRAM).
- TTL Compatible: Interfaces directly with TTL logic circuits.
Benefits
- High Speed: Fast access time enables high-performance operation.
- Easy to Use: Static RAM requires no refresh cycles, simplifying memory control.
- Wide Operating Voltage: Operates over a range of supply voltages.
- Reliable Data Storage: Provides stable and reliable data storage as long as power is maintained.
- Commonly Available: Widely used and supported by various development tools.
Additional Details
The UPD4464C-15 typically comes in a DIP (Dual In-Line Package). Key specifications include supply voltage, operating temperature range, and input/output voltage levels. The datasheet provides detailed information on pin assignments, timing diagrams, and electrical characteristics. Proper decoupling capacitors should be used to minimize noise and ensure stable operation. The memory is accessed by providing an address and enabling the chip select (CS), output enable (OE), and write enable (WE) signals. The write enable signal determines whether the memory is being read from or written to.
