RX8111CE B3 vs RV-4162-C7-32.768KHZ-20PPM-TA-QA
| Part Number |
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| Category | Clock/Timing - Real Time Clocks | Clock/Timing - Real Time Clocks |
| Manufacturer | Epson | Micro Crystal AG |
| Description | IC RTC CLK/CALENDAR I2C SMD | IC RTC CLK/CALENDAR I2C 8-SMT |
| Package | Tape & Reel (TR) | Tape & Reel (TR) |
| Series | RX8111CE | Automotive, AEC-Q200 |
| Type | Clock/Calendar | Clock/Calendar |
| Features | Alarm, RAM | Alarm, Leap Year, Watchdog Timer |
| Time Format | HH:MM:SS | HH:MM:SS:hh |
| Date Format | YY-MM-DD | YY-MM-DD-dd |
| Interface | I²C | I²C |
| Voltage - Supply | 1.6V ~ 5.5V | 1V ~ 4.4V |
| Current - Timekeeping (Max) | 3µA @ 3V | 0.5µA @ 3V |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 10-SMD, No Lead | 8-WCDFN |
| Supplier Device Package | 10-SMD | 8-SON (3.2x1.5) |
| Memory Size | - | - |
| Voltage - Supply, Battery | - | - |
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1. What are the typical applications of RTC?
RTC is widely used in embedded systems, computers, consumer electronic devices (such as smartphones and cameras), industrial control systems, data recording devices, and any device that requires precise time maintenance.
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2. How to communicate with real-time clock in the device?
Real time clocks typically communicate with microcontrollers or other processors through I2C or SPI communication interfaces, allowing for the reading and setting of time and other related information.
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3. How often do RTC batteries need to be replaced?
The battery life of RTC can usually last for several years, depending on the type of battery used, the power consumption of RTC, and the ambient temperature. Generally speaking, button batteries can last for 5-10 years under normal conditions.
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4. How to choose a suitable RTC chip?
When choosing RTC, factors such as power consumption, communication interface (I2C/SPI), time accuracy, whether there is a built-in crystal or external crystal required, battery support, temperature range, and whether there is an alarm function should be considered.
