Everything to know about USB RTC for Raspberry Pi

USB Real Time Clock For Raspberry Pi

There are products like Data Loggers, Digital clock, Attendance system, Digital camera, etc. that have become devices for daily usage in the modern-day world. Advanced technologies like these need the timestamp for which RTC is an adequate option. For beginners, RTC is the abbreviation of "Real-Time Clock" which is an electronic device that allows the user to measure the passage of time. We came up with the product “USB RTC” for Raspberry Pi, Windows, LINUX, MACOS, STM32, etc and with the help of our design partner “SB Components”, USB RTC came into existence. It will increase the efficiency of the users with its powerful components and compact size.

Significance of USB RTC

A lot of people do not have an understanding of the utilization of the RTC in their devices. RTC or Real-Time Clock is a device to maintain the time in your system, that does not sound like the most important work to do but here most of the people are wrong. Before the extensive usage of the internet, RTC modules were used in devices like computers, sensors, monitoring devices, Digital watches, etc. to make them work efficiently in real-time.

Benefits of USB RTC

Now the devices are connected with the internet or GPS from which it can get the information in real-time that make the RTC useless but think about the scenarios where a user does not have a constant internet connection. A lot of places do not have the luxury of the constant internet connection that we will explore in this article. USB Real Time Clock For Raspberry Pi

Communication via MCP2221

MCP2221 is the key component of the USB RTC module that works as a USB 2.0 to I2C /UART Protocol Converter with GPIO. It supports full-speed USB (12 Mb/s) that makes the communication between the Host and USB RTC with high efficiency. It comes with the Human Interface Device(HID) for both the chip control and I2CTM that allows better control of the user on the system. MCP2221 has built with Four GPIO lines that are configurable for GPIO Operations which enables the users to make better technically advanced products. USb RTC

Features of MCP2221

I2C/SMBus supported clock and data lines
User-selectable via jumper cable for 3.3V or 5V level output (up to 500 mA)
Four GPIO lines that are configurable for GPIO Operations
Pins for Serial(UART) Communication
Supports full-speed USB (12 Mb/s)
64-byte Transmit
64-byte Receive
USB 2.0 Compliant

Features of DS3231

Extremely accurate I2C real-time clock (RTC)
Integrated temperature-compensated crystal oscillator (TCXO)
Incorporates a battery input
16-pin, 300-mil SO package
Automated Backup Power Supply
Fast (400kHz) I2C Interface

Specifications

Accuracy ±2ppm from 0°C to +40°C
Accuracy ±3.5ppm from -40°C to +85°C
Battery Backup Input for Continuous Timekeeping
Operating Temperature Ranges Commercial: 0°C to +70°C Industrial: -40°C to +85°C ♦ Low-Power Consumption
Real-Time Clock Counts Seconds, Minutes, Hours, Day, Date, Month, and Year with Leap Year Compensation Valid Up to 2100
Two Time-of-Day Alarms
Programmable Square-Wave Output
Fast (400kHz) I2C Interface
3.3V Operation
Digital Temp Sensor Output: ±3°C Accuracy
Register for Aging Trim
RST Output/Push Button Reset Debounce Input
Underwriters Laboratories (UL®) Recognized