Real Time Clock/Calendar with EEPROM Here are the factual details about part **X1226V8I** from manufacturer **XICOR**:
### **Specifications:**
- **Part Number:** X1226V8I
- **Manufacturer:** XICOR
- **Type:** Real-Time Clock (RTC) with EEPROM
- **Interface:** I²C (2-wire serial)
- **Supply Voltage:** 2.7V to 5.5V
- **Clock Accuracy:** ±5 ppm (at 25°C)
- **Timekeeping Current:** 400nA (typical)
- **EEPROM Size:** 256 bytes (non-volatile)
- **EEPROM Endurance:** 1,000,000 write cycles
- **EEPROM Retention:** 100 years
- **Operating Temperature Range:** -40°C to +85°C
- **Package:** 8-lead SOIC
### **Descriptions:**
- The **X1226V8I** is a low-power RTC with an integrated 256-byte EEPROM.
- It provides accurate timekeeping with battery backup capability.
- Features include alarm functions, programmable square wave output, and automatic leap-year compensation.
- The EEPROM can be used for storing system configuration or other critical data.
### **Features:**
- **Battery Backup Support** – Maintains timekeeping during power loss.
- **Two Time-of-Day Alarms** – Configurable for system wake-up or interrupts.
- **Programmable Square Wave Output** – Frequencies from 32.768 kHz to 1 Hz.
- **Automatic Leap-Year Compensation** – Valid up to the year 2100.
- **Low Power Consumption** – Ideal for battery-powered applications.
- **I²C Interface** – Supports standard (100 kHz) and fast (400 kHz) modes.
- **Power-On Reset (POR) Circuit** – Ensures proper initialization.
This information is based on the manufacturer's datasheet for the **X1226V8I**.
