Overview
The RTC-72423A, produced by EPSON, is a highly versatile and reliable 4-bit Real Time Clock (RTC) module. This component features a built-in crystal unit, which allows for adjustment-free and efficient operation. It supports both 12-hour and 24-hour time formats and automatically adjusts for leap years according to the Gregorian calendar. The RTC-72423A is packaged in a 24-pin SOIC (Small Outline Integrated Circuit) and is designed for surface mount applications.
Key Specifications
| Parameter | Conditions | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|---|
| Supply Voltage (VDD) | Ta=+25 °C | -0.3 | 7.0 | V | |
| Current Consumption (IDD1) | VDD=5 V, CS1=0 V | 1 | 10 | µA | |
| Current Consumption (IDD2) | VDD=2 V | 0.9 | 5 | µA | |
| Storage Temperature (TSTG) | -55 | 125 | °C | ||
| Operating Temperature (TOPR) | -40 | 85 | °C | ||
| Input Voltage (VI/O) | Ta=+25 °C | GND-0.3 | VDD+0.3 | V | |
| High Input Voltage (VIH1) | 2.2 | V | |||
| Low Input Voltage (VIL1) | 0.8 | V | |||
| Low Output Voltage (VOL1) | IOL=2.5 mA | 0.4 | V | ||
| High Output Voltage (VOH) | IOH=-400 µA | 2.4 | V | ||
| Frequency Precision (∆f/f) | Ta=+25 °C, VDD=5.0 V | ±20 ×10^-6 (72423A) | ±50 ×10^-6 (72423B) |
Key Features
- Built-in crystal unit for adjustment-free efficient operation.
- Supports both 12-hour and 24-hour time formats.
- Automatically adjusts for leap years according to the Gregorian calendar.
- Low power consumption: 1-10 µA at 5 V and 0.9-5 µA at 2 V.
- Wide operating temperature range: -40 °C to +85 °C.
- Parallel interface for easy integration with other components.
- Available in a 24-pin SOIC package for surface mount applications.
Applications
The RTC-72423A is suitable for a wide range of applications requiring accurate timekeeping, including:
- Embedded systems and microcontrollers.
- Industrial control systems.
- Medical devices.
- Automotive systems.
- Consumer electronics such as clocks, timers, and calendar devices.
Q & A
- What is the package type of the RTC-72423A?
The RTC-72423A is packaged in a 24-pin SOIC (Small Outline Integrated Circuit). - What are the supported time formats?
The RTC-72423A supports both 12-hour and 24-hour time formats. - Does the RTC-72423A adjust for leap years?
Yes, it automatically adjusts for leap years according to the Gregorian calendar. - What is the operating temperature range of the RTC-72423A?
The operating temperature range is -40 °C to +85 °C. - What is the typical current consumption of the RTC-72423A?
The typical current consumption is 1-10 µA at 5 V and 0.9-5 µA at 2 V. - Is the RTC-72423A RoHS compliant?
Yes, the RTC-72423A is available in RoHS-compliant versions. - What interface does the RTC-72423A use?
The RTC-72423A uses a parallel interface. - How accurate is the frequency precision of the RTC-72423A?
The frequency precision is ±20 ×10^-6 for the 72423A model and ±50 ×10^-6 for the 72423B model at Ta=+25 °C and VDD=5.0 V. - Can the RTC-72423A be used in high-temperature environments?
Yes, it can operate in temperatures ranging from -40 °C to +85 °C. - Is the RTC-72423A suitable for surface mount applications?
Yes, it is designed for surface mount applications.
