5 Volt, Byte Alterable E2PROM The X28HC256J-70 is a high-speed CMOS EEPROM manufactured by XICOR. Below are its specifications, descriptions, and features based on Ic-phoenix technical data files:
### **Specifications:**
- **Memory Size:** 256Kbit (32K x 8)
- **Speed:** 70ns access time
- **Technology:** High-Speed CMOS
- **Supply Voltage:** 5V ±10%
- **Operating Temperature Range:** Commercial (0°C to +70°C)
- **Package:** 28-pin PLCC (Plastic Leaded Chip Carrier)
- **Endurance:** 100,000 write cycles (minimum)
- **Data Retention:** 100 years (minimum)
### **Descriptions:**
- The X28HC256J-70 is a high-performance Electrically Erasable Programmable Read-Only Memory (EEPROM).
- It features a fast access time of 70ns, making it suitable for high-speed applications.
- The device supports a simple byte-write operation with a self-timed programming cycle.
- It includes a write-protect feature to prevent accidental data corruption.
### **Features:**
- **Fast Read Access Time:** 70ns
- **Low Power Consumption:**
- Active current: 30mA (typical)
- Standby current: 100µA (typical)
- **Byte-Write Capability:** Allows individual byte programming without requiring a full-chip erase.
- **Hardware Write Protection:** WP pin enables/disables write operations.
- **Self-Timed Write Cycle:** Internal timing for programming operations.
- **CMOS Technology:** Ensures low power and high noise immunity.
- **Industry-Standard Pinout:** Compatible with other 256Kbit EEPROMs.
This information is strictly based on the factual specifications and features of the X28HC256J-70 EEPROM from XICOR.
