5 Volt, Byte Alterable E2PROM The X28C512D-12 is a 512K (64K x 8) CMOS EEPROM manufactured by XICOR. Below are its key specifications, descriptions, and features:
### **Specifications:**
- **Organization:** 64K x 8 (512K bits)
- **Access Time:** 120 ns
- **Operating Voltage:** 5V ±10%
- **Operating Temperature Range:** Commercial (0°C to +70°C) or Industrial (-40°C to +85°C)
- **Endurance:** 100,000 write cycles per byte
- **Data Retention:** 100 years
- **Package Options:** 28-lead PDIP, PLCC, SOIC, TSOP
### **Descriptions:**
- The X28C512D-12 is a high-performance, byte-alterable EEPROM with a fast read access time.
- It features a simple, byte-wide interface for easy integration into microprocessor-based systems.
- The device supports both parallel programming and in-system write operations.
### **Features:**
- **Fast Read Access Time:** 120 ns
- **Low Power Consumption:**
- Active Read Current: 30 mA (max)
- Standby Current: 100 µA (max)
- **Automatic Write Timing:** Internal control for write operations.
- **Hardware & Software Data Protection:**
- Write protect pin (WP)
- Software-controlled write protection
- **High Reliability:**
- Endurance: 100,000 cycles per byte
- Data retention: 100 years
- **Compatibility:** JEDEC-standard pinout for easy replacement of EPROMs.
For exact timing diagrams, programming algorithms, or additional details, refer to the official XICOR datasheet.
