5 Volt, Byte Alterable E2PROM The X28C512JI-25 is a 512Kb (64K x 8) CMOS EEPROM manufactured by Xicor. Below are its key specifications, descriptions, and features:
### **Specifications:**
- **Memory Size:** 512Kb (64K x 8)
- **Supply Voltage:** 5V ±10%
- **Access Time:** 25ns (max)
- **Operating Temperature Range:** -40°C to +85°C
- **Endurance:** 100,000 write cycles (min)
- **Data Retention:** 100 years (min)
- **Package:** 32-lead PLCC (Plastic Leaded Chip Carrier)
### **Descriptions:**
- The X28C512JI-25 is a high-performance, byte-erasable EEPROM with a fast access time of 25ns.
- It features a low-power CMOS design, making it suitable for battery-backed applications.
- The device supports a simple, microprocessor-compatible interface with no external components required for operation.
- It includes built-in software data protection to prevent accidental writes.
### **Features:**
- **Fast Read Access Time:** 25ns (max)
- **Low Power Consumption:**
- Active Current: 30mA (max)
- Standby Current: 100μA (max)
- **Byte-Write and Page-Write Capability:**
- Page mode allows up to 64 bytes to be written in a single operation.
- **Hardware and Software Data Protection:**
- Write protect pin (WP) and internal circuitry prevent unintended writes.
- **Self-Timed Write Cycle:**
- Typical write cycle time of 5ms (no external timing required).
- **Compatibility:**
- Directly replaces 512Kb EPROMs (e.g., 27C512) without circuit modifications.
- **Industrial Temperature Range:**
- Suitable for harsh environments (-40°C to +85°C).
This information is based solely on the manufacturer's datasheet for the X28C512JI-25.
