5 Volt, Byte Alterable E2PROM The X28C512D-20 is a 512K (64K x 8) CMOS EEPROM manufactured by XICOR. Below are the key specifications, descriptions, and features:
### **Specifications:**
- **Density:** 512K (64K x 8)
- **Technology:** CMOS EEPROM
- **Operating Voltage:** 5V ±10%
- **Access Time:** 200ns (max)
- **Operating Temperature Range:** Commercial (0°C to +70°C) or Industrial (-40°C to +85°C)
- **Package Options:** 28-pin PDIP, PLCC, or SOIC
- **Endurance:** 100,000 write cycles (minimum) per byte
- **Data Retention:** 100 years (minimum)
### **Descriptions:**
- The X28C512D-20 is a high-performance, byte-alterable EEPROM with a fast read access time.
- It supports a simple, microprocessor-compatible interface for easy integration into systems.
- Features include a software data protection mechanism to prevent accidental writes.
### **Features:**
- **Byte-Write Capability:** Allows individual byte writes without requiring a full page erase.
- **Automatic Write Timing:** Internal control for write cycle completion.
- **Low Power Consumption:** Active current (max): 30mA, Standby current (max): 100μA.
- **Hardware & Software Data Protection:** Prevents inadvertent writes.
- **JEDEC Standard Pinout:** Ensures compatibility with other industry-standard EEPROMs.
- **Self-Timed Write Cycle:** Eliminates the need for external timing components.
This information is based solely on the manufacturer's specifications for the X28C512D-20 EEPROM from XICOR.
