5 Volt, Byte Alterable E2PROM The X28C512JI-20 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:** 200 ns (JI-20 speed grade)
- **Operating Voltage:** 5V ±10%
- **Operating Temperature Range:**
- Commercial (0°C to +70°C)
- Industrial (-40°C to +85°C)
- **Endurance:** 100,000 write cycles per byte
- **Data Retention:** 100 years
- **Package:** 32-pin PLCC (Plastic Leaded Chip Carrier)
### **Descriptions:**
- **Memory Type:** Electrically Erasable Programmable Read-Only Memory (EEPROM)
- **Interface:** Parallel (byte-wide)
- **Write Protection:** Software and hardware write protection options
- **Low Power Consumption:**
- Active Read Current: 30 mA (max)
- Standby Current: 100 µA (max)
### **Features:**
- **Fast Write Cycle Time:** 200 ns access time
- **Page Write Mode:** Allows up to 64 bytes to be written in a single operation
- **Automatic Write Cycle Completion Detection:**
- Toggle Bit polling
- Data Polling
- **High Reliability:**
- Endurance: 100K write cycles
- Data retention: 100 years
- **CMOS Technology:** Low power consumption
- **Compatibility:** Pin-compatible with industry-standard 512K EEPROMs
This information is based on the manufacturer's datasheet for the X28C512JI-20 EEPROM.
