5 Volt, Byte Alterable E2PROM The X28C256DI-25 is a 256K (32K x 8) CMOS EEPROM manufactured by XICOR. Below are its key specifications, descriptions, and features:
### **Specifications:**
- **Organization:** 32K x 8
- **Technology:** CMOS EEPROM
- **Access Time:** 250 ns
- **Operating Voltage:** 5V ±10%
- **Operating Temperature Range:**
- Commercial (0°C to +70°C)
- Industrial (-40°C to +85°C)
- **Endurance:** 100,000 write cycles (minimum)
- **Data Retention:** 100 years (minimum)
- **Package:** 28-lead DIP (Dual In-line Package)
### **Descriptions:**
- The X28C256DI-25 is a high-performance, byte-alterable EEPROM with a fast access time of 250 ns.
- It supports a simple 5V-only operation, eliminating the need for additional power supplies.
- Features a write-protect pin (WP) to prevent accidental writes.
- Compatible with JEDEC standards for easy integration into existing designs.
### **Features:**
- **Fast Read Access Time:** 250 ns
- **Low Power Consumption:**
- Active Current: 30 mA (max)
- Standby Current: 100 µA (max)
- **Byte and Page Write Modes:**
- Byte write (single-byte programming)
- Page write (up to 64 bytes in a single operation)
- **Hardware and Software Data Protection:**
- WP pin for hardware write protection
- Software-controlled write protection
- **Self-Timed Write Cycle:** No external timing components required.
- **High Reliability:**
- 100,000 write cycles per byte
- 100-year data retention
This information is based on the manufacturer's datasheet. For detailed electrical characteristics and timing diagrams, refer to the official documentation.
