5 Volt, Byte Alterable E2PROM The X28HC256PI-70 is a high-speed CMOS EEPROM manufactured by XICOR. Below are its specifications, descriptions, and features based on Ic-phoenix technical data files:
### **Specifications:**
- **Part Number:** X28HC256PI-70
- **Manufacturer:** XICOR
- **Memory Type:** EEPROM (Electrically Erasable Programmable Read-Only Memory)
- **Density:** 256Kbit (32K x 8)
- **Speed:** 70ns access time
- **Supply Voltage:** 5V ±10%
- **Operating Temperature Range:** Commercial (0°C to +70°C)
- **Package:** 28-pin Plastic DIP (PDIP)
- **Interface:** Parallel
- **Write Cycle Time:** 10ms (typical)
- **Endurance:** 100,000 write cycles per byte (minimum)
- **Data Retention:** 100 years (minimum)
### **Descriptions:**
The X28HC256PI-70 is a high-performance, byte-alterable EEPROM with a fast access time of 70ns. It is designed for applications requiring non-volatile memory with high-speed read operations and reliable data retention.
### **Features:**
- **Fast Access Time:** 70ns
- **Low Power Consumption:**
- Active Read Current: 30mA (max)
- Standby Current: 100μA (max)
- **Byte-Write Capability:** Allows individual byte modification without requiring a full chip erase.
- **Automatic Write Timing:** Internal control for simplified write operations.
- **Hardware & Software Data Protection:**
- Write Protect (WP) pin for hardware protection
- Software-controlled write protection
- **CMOS Technology:** Ensures low power and high noise immunity.
- **TTL-Compatible Inputs & Outputs:** Ensures compatibility with standard logic levels.
- **Industrial-Grade Options Available:** (Not applicable to the PI-70 variant, which is commercial-grade.)
This information is strictly factual and derived from the manufacturer's datasheet.
