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UPD4992CX from NEC

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UPD4992CX

Manufacturer: NEC

8-Bit Parallel I/O Calendar Clock

Partnumber Manufacturer Quantity Availability
UPD4992CX NEC 87 In Stock

Description and Introduction

8-Bit Parallel I/O Calendar Clock The UPD4992CX is a real-time clock (RTC) integrated circuit manufactured by NEC. Below are its key specifications, descriptions, and features:

### **Specifications:**
- **Manufacturer:** NEC (Nippon Electric Company)  
- **Type:** Real-Time Clock (RTC) IC  
- **Package:** Likely DIP (Dual In-line Package) or similar  
- **Supply Voltage:** Typically operates at **5V**  
- **Clock Function:** Provides **year, month, day, hour, minute, second, and day-of-week** functions  
- **Interface:** Parallel or serial (depending on variant)  
- **Oscillator:** Internal or external crystal oscillator support (usually **32.768 kHz**)  
- **Backup Power:** Supports battery backup for timekeeping during power loss  

### **Descriptions:**
- The UPD4992CX is designed for timekeeping applications in electronic systems.  
- It includes counters for seconds, minutes, hours, days, months, and years.  
- May feature alarm functions or programmable interrupts.  

### **Features:**
- **Low Power Consumption:** Suitable for battery-backed applications.  
- **High Accuracy:** Maintains precise timekeeping with a crystal oscillator.  
- **Wide Operating Temperature Range:** Typically **-40°C to +85°C** (industrial-grade).  
- **Automatic Leap Year Compensation:** Handles leap years up to 2100.  
- **Multiple Time Formats:** Supports 12-hour or 24-hour modes.  

For exact pinout and application details, refer to the NEC **UPD4992CX datasheet**.

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