5 Volt, Byte Alterable E2PROM The X28C256J-35 is a 256K (32K x 8) CMOS EEPROM manufactured by Xicor. Below are its key specifications, descriptions, and features:
### **Specifications:**
- **Memory Size:** 256Kbit (32K x 8)
- **Access Time:** 35 ns
- **Supply Voltage:** 5V ±10%
- **Operating Temperature Range:** 0°C to +70°C
- **Package:** 28-pin PLCC (Plastic Leaded Chip Carrier)
- **Endurance:** 100,000 write cycles (minimum)
- **Data Retention:** 100 years (minimum)
- **Interface:** Parallel
### **Descriptions:**
- The X28C256J-35 is a high-performance, byte-alterable EEPROM with a fast access time.
- It features a 5V-only operation, making it compatible with standard microprocessor systems.
- The device supports both read and write operations with a simple bus interface.
### **Features:**
- **Fast Read Access Time:** 35 ns
- **Low Power Consumption:**
- Active Read Current: 30 mA (max)
- Standby Current: 100 µA (max)
- **Byte-Write Capability:** Allows individual byte modification without erasing the entire chip.
- **Automatic Write Timing:** Internal control for simplified write operations.
- **Hardware & Software Data Protection:** Prevents accidental writes.
- **CMOS Technology:** Ensures low power and high reliability.
- **JEDEC Standard Pinout:** Compatible with industry-standard 28-pin EEPROMs.
This information is based solely on the manufacturer's specifications for the X28C256J-35.
