Overview
The RX8010SJ:B3 PURE SN is a Real Time Clock (RTC) module produced by EPSON. This module is designed to provide accurate timekeeping and various additional functionalities, making it a versatile component for a wide range of applications. It features a built-in frequency-adjusted 32.768 kHz crystal unit and supports an I2C-Bus interface with a clock speed of 400 kHz. The module operates within a broad voltage range, ensuring compatibility with different system designs.
Key Specifications
| Specification | Value | Unit |
|---|---|---|
| Interface Type | I2C-Bus | - |
| Interface Speed | 400 kHz | - |
| Operating Voltage Range | 1.6 V to 5.5 V | V |
| Wide Voltage for Time Keeping | 1.1 V to 5.5 V | V |
| Low Backup Current | 160 nA / 3 V (Typ.) | nA |
| Frequency Output Function | C-MOS or Open-Drain output | - |
| Built-in User RAM | 128 bit (8 bit x 16, SRAM) | - |
| Operating Temperature Range | -40°C to +85°C | °C |
| Frequency Tolerance | ±5 ppm (at Ta = +25°C, VDD = 3.0 V) | - |
| Oscillation Start-up Time | 1 s (Typ.) at Ta = +25°C, VDD = 1.6 V to 5.5 V | s |
Key Features
- Full calendar function including year, month, day, weekday, hour, minute, and second.
- Alarm function that can be set to day of week, day, hour, and minute.
- Timer function.
- Automatic recording of event occurrence to AF-bit and output via /IRQ1 pin.
- Low current consumption, especially in backup mode.
- 128-bit user RAM (8 bits x 16, SRAM).
- Frequency output function with C-MOS or Open-Drain output.
- Linux driver available for development.
Applications
The RX8010SJ:B3 PURE SN is suitable for a variety of applications that require accurate timekeeping and additional timing functions. These include:
- Industrial control systems.
- Automotive systems.
- Consumer electronics such as smart home devices and appliances.
- Medical devices requiring precise timing.
- IoT devices that need to maintain accurate time and perform scheduling tasks.
Q & A
- What is the interface type of the RX8010SJ:B3 PURE SN?
The interface type is I2C-Bus with a clock speed of 400 kHz. - What is the operating voltage range of the RX8010SJ:B3 PURE SN?
The operating voltage range is from 1.6 V to 5.5 V. - What is the low backup current of the RX8010SJ:B3 PURE SN?
The low backup current is 160 nA at 3 V (Typ.). - Does the RX8010SJ:B3 PURE SN have built-in user RAM?
Yes, it has 128-bit user RAM (8 bits x 16, SRAM). - What are the alarm functions available in the RX8010SJ:B3 PURE SN?
The alarm function can be set to day of week, day, hour, and minute. - Is there a Linux driver available for the RX8010SJ:B3 PURE SN?
Yes, EPSON has prepared a Linux driver for development. - What is the frequency tolerance of the RX8010SJ:B3 PURE SN?
The frequency tolerance is ±5 ppm at Ta = +25°C, VDD = 3.0 V. - What is the operating temperature range of the RX8010SJ:B3 PURE SN?
The operating temperature range is from -40°C to +85°C. - What are the types of frequency output functions available?
The frequency output functions include C-MOS or Open-Drain output. - How long does the oscillation start-up time typically take?
The oscillation start-up time typically takes 1 second at Ta = +25°C, VDD = 1.6 V to 5.5 V.
