5 Volt, Byte Alterable E2PROM The X28C512PI-12 is a 512Kbit (64K x 8) CMOS EEPROM manufactured by XICOR. Below are its key specifications, descriptions, and features:
### **Specifications:**
- **Density:** 512Kbit (64K x 8)
- **Organization:** 65,536 words × 8 bits
- **Access Time:** 120ns
- **Operating Voltage:** 5V ±10%
- **Operating Temperature Range:** Commercial (0°C to +70°C)
- **Package:** 28-pin PDIP (Plastic Dual In-line Package)
- **Endurance:** 100,000 write cycles per byte (minimum)
- **Data Retention:** 100 years (minimum)
### **Descriptions:**
- **High-Speed Read Operation:** Fast access time of 120ns.
- **Low Power Consumption:** Active current of 30mA (max), standby current of 100μA (max).
- **Byte-Write Capability:** Allows individual byte writes without needing to erase the entire chip.
- **Software Data Protection (SDP):** Prevents accidental writes via a software-controlled protection mechanism.
- **Hardware Write Protection:** WP pin enables/disables write operations.
- **JEDEC Standard Pinout:** Compatible with other 28-pin EEPROMs.
### **Features:**
- **CMOS Technology:** Low power consumption.
- **Self-Timed Write Cycle:** Internal control for programming.
- **Automatic Erase Before Write:** Ensures data integrity.
- **TTL-Compatible Inputs/Outputs:** Easy interfacing with microcontrollers.
- **Industrial-Grade Options Available:** Extended temperature range (-40°C to +85°C) in other variants.
This information is based on the manufacturer's datasheet for the X28C512PI-12.
