Overview
The BQ4802LYDWR is a real-time clock (RTC) component manufactured by Texas Instruments. This model is designed to provide accurate timekeeping and calendar functions, integrated with CPU supervision and external NVSRAM control. It is widely used in applications requiring precise timing and data retention, such as industrial control systems, point-of-sale terminals, and data loggers. The BQ4802LYDWR is available in a 28-pin SOIC package, offering a compact and reliable solution for embedded systems.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Power Supply Voltage | 2.7 to 3.6 | V | Operating range |
| Battery Voltage | 2.4 to 4 | V | Backup power |
| Operating Temperature | 0 to 70 | °C | Standard range |
| Time Format | HH:MM:SS | - | 12/24 hour |
| Date Format | YY-MM-DD-dd | - | Calendar |
| Interface | Parallel | - | Data transfer |
| Package | 28-SOIC | - | Surface mount |
Key Features
- Integrated real-time clock and calendar functions.
- CPU supervision and watchdog timer for system reliability.
- External NVSRAM control for data retention.
- Low power consumption for extended battery life.
- Compact 28-pin SOIC package for space-constrained designs.
Applications
The BQ4802LYDWR is suitable for a variety of applications, including industrial automation, where precise timing and data logging are essential. It is also used in point-of-sale terminals to ensure accurate transaction timing and in data loggers for maintaining time-stamped records. Additionally, its CPU supervision feature makes it ideal for systems requiring high reliability and fault tolerance.
Q & A
What is the operating voltage range of the BQ4802LYDWR?
The operating voltage range is 2.7V to 3.6V.
Does the BQ4802LYDWR support battery backup?
Yes, it supports battery backup with a voltage range of 2.4V to 4V.
What is the time format used by the BQ4802LYDWR?
It uses the HH:MM:SS format, available in both 12-hour and 24-hour modes.
What is the date format supported by this component?
The date format is YY-MM-DD-dd.
What is the package type of the BQ4802LYDWR?
It comes in a 28-pin SOIC package.
Is the BQ4802LYDWR suitable for industrial applications?
Yes, it is designed for industrial control systems and other high-reliability applications.
Does this component include a watchdog timer?
Yes, it features a watchdog timer for system supervision.
What is the operating temperature range?
The operating temperature range is 0°C to 70°C.
Can the BQ4802LYDWR interface with external NVSRAM?
Yes, it includes external NVSRAM control for data retention.
Is the BQ4802LYDWR low power?
Yes, it is designed for low power consumption to extend battery life.
