PCF8593
Low-power real-time clock ICs with calendar and alarm features
Manufacturer： nxp
series introduction
# PCF8593 Product Series Introduction
## 1. Overview
The PCF8593 is a highly integrated and versatile product series that offers a range of features suitable for a variety of applications. It is a real - time clock (RTC) with an integrated EEPROM, designed to provide accurate timekeeping and non - volatile data storage capabilities. This combination makes it an ideal choice for systems that require both time management and data retention, such as industrial control systems, consumer electronics, and smart meters.
## 2. Key Features
### Real - Time Clock Functionality
- **Accurate Timekeeping**: The PCF8593 is capable of keeping track of seconds, minutes, hours, days, months, and years with high precision. It uses an internal oscillator circuit that can be calibrated to ensure accurate timekeeping even in different environmental conditions. The clock can operate in either a 12 - hour or 24 - hour format, providing flexibility for different user requirements.
- **Alarm Function**: It includes an alarm function that can be set to trigger at a specific time. The alarm can be configured to generate an interrupt signal, which can be used to wake up a microcontroller or other components in a system, enabling power - saving modes and event - driven operations.
- **Leap Year Compensation**: The RTC in the PCF8593 automatically compensates for leap years, ensuring accurate date calculations over long periods. This feature is essential for applications that rely on correct date information, such as scheduling and logging.
### EEPROM Storage
- **Non - Volatile Memory**: The integrated EEPROM in the PCF8593 provides non - volatile data storage, which means that the stored data is retained even when the power is removed. This is useful for storing configuration parameters, calibration data, or historical records that need to be preserved across power cycles.
- **Multiple Memory Locations**: The EEPROM has a certain number of memory locations, allowing for the storage of multiple data items. The data can be easily written to and read from the EEPROM using standard I²C communication protocols, which simplifies the integration with microcontrollers and other devices.
- **Write Protection**: To prevent accidental data overwriting, the PCF8593 offers a write - protection feature. This can be enabled or disabled as needed, providing an additional layer of data security.
### Communication Interface
- **I²C Bus Compatibility**: The PCF8593 uses the widely adopted I²C (Inter - Integrated Circuit) bus interface for communication with other devices. This interface is simple, requires only two wires (SDA and SCL), and allows for easy connection to a microcontroller or other I²C - compatible devices. It also supports multi - master communication, enabling multiple devices to share the same bus.
- **Low - Power Communication**: The I²C interface operates at low power, making it suitable for battery - powered applications. The low - power consumption helps to extend the battery life of the system, which is crucial for portable and remote devices.
## 3. Electrical Characteristics
### Power Supply
- **Wide Voltage Range**: The PCF8593 can operate over a wide power supply voltage range, typically from 2.5V to 5.5V. This wide voltage range allows it to be used in different types of systems, including those powered by batteries or regulated power supplies.
- **Low - Power Consumption**: In standby mode, the power consumption of the PCF8593 is extremely low, which helps to conserve energy. This is especially important for battery - operated devices where power efficiency is a critical factor.
### Temperature Range
- **Industrial - Grade Temperature Support**: The PCF8593 is designed to operate over a wide temperature range, usually from -
Images for reference
8-DIP SOT97-1
8-DIP
8-SOIC