5 Volt, Byte Alterable E2PROM The X28C64D is a 64K (8K x 8) CMOS EEPROM manufactured by XICOR. Below are its key specifications, descriptions, and features:
### **Specifications:**
- **Memory Size:** 64Kbit (8K x 8)
- **Technology:** CMOS EEPROM
- **Supply Voltage:** 5V ±10%
- **Access Time:** 150ns (max)
- **Operating Temperature Range:**
- Commercial: 0°C to +70°C
- Industrial: -40°C to +85°C
- **Endurance:** 100,000 write cycles (min)
- **Data Retention:** 100 years (min)
- **Package Options:**
- 28-pin DIP (Dual In-line Package)
- 28-pin PLCC (Plastic Leaded Chip Carrier)
- 28-pin SOIC (Small Outline IC)
### **Descriptions:**
- The X28C64D is a byte-alterable EEPROM, allowing individual byte writes without requiring a full erase cycle.
- It features a simple **JEDEC-standard** 28-pin interface, ensuring compatibility with industry-standard EPROMs.
- The device includes **internal control circuitry** for automatic write timing and data verification.
- It supports **software data protection (SDP)**, preventing accidental writes.
### **Features:**
- **Low Power Consumption:**
- Active Read Current: 30mA (max)
- Standby Current: 100μA (max)
- **Fast Write Cycle Time:** 5ms (max) per byte
- **Hardware & Software Write Protection**
- **TTL-Compatible Inputs & Outputs**
- **Self-Timed Erase/Write Cycles**
- **Automatic Write Completion Detection** (via polling or toggle bit)
- **High Reliability** with built-in error correction
This information is based solely on the manufacturer's datasheet for the X28C64D EEPROM from XICOR.
