UPort Saver EEPROM Part X84256S8I-2.5 is a 256Kbit (32K x 8) Serial EEPROM manufactured by XICOR. Below are its specifications, descriptions, and features:
### **Specifications:**
- **Memory Size:** 256Kbit (32K x 8)
- **Interface:** I²C (2-wire serial)
- **Supply Voltage:** 2.5V to 5.5V
- **Operating Temperature Range:** Industrial (-40°C to +85°C)
- **Package:** 8-lead SOIC (S8)
- **Write Cycle Endurance:** 1,000,000 cycles
- **Data Retention:** 100 years
- **Clock Frequency:** Up to 400kHz (I²C Fast Mode)
- **Page Write Buffer:** 64 bytes
### **Descriptions:**
- The X84256S8I-2.5 is a low-power, byte-alterable EEPROM with a serial I²C interface.
- It supports both random and sequential read operations.
- The device includes a write-protect pin (WP) for hardware data protection.
- It is designed for industrial applications requiring reliable non-volatile memory.
### **Features:**
- **Low Power Consumption:**
- Active Read Current: 1mA (typical)
- Standby Current: 5μA (typical)
- **Software Write Protection:** Selectable block protection (1/4, 1/2, or full array)
- **Hardware Write Protection:** WP pin for preventing writes
- **Built-in Error Correction:** Ensures data integrity
- **Self-Timed Write Cycle:** No external timing components required
- **Acknowledge Polling:** Detects completion of write cycles
This device is commonly used in industrial controls, automotive systems, and embedded applications requiring reliable non-volatile storage.
