PCF85363ATT1/AZ vs MAX31341EWC+T
| Part Number |
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| Category | Clock/Timing - Real Time Clocks | Clock/Timing - Real Time Clocks |
| Manufacturer | NXP USA Inc. | Maxim Integrated |
| Description | IC RTC CLK/CALENDAR I2C 10TSSOP | IC REAL TIME CLK LO CURRENT W/I2 |
| Package | Tape & Reel (TR) | Cut Tape (CT) |
| Series | Automotive, AEC-Q100 | - |
| Type | Clock/Calendar | - |
| Features | Alarm, Leap Year, Watchdog Timer | - |
| Time Format | HH:MM:SS:hh (12/24 hr) | - |
| Date Format | YY-MM-DD-dd | - |
| Interface | I²C, 2-Wire Serial | - |
| Voltage - Supply | 0.9V ~ 1.8V, 0.9V ~ 5.5V | - |
| Current - Timekeeping (Max) | 0.885µA @ 3.3V | - |
| Operating Temperature | -40°C ~ 85°C (TA) | - |
| Mounting Type | Surface Mount | - |
| Package / Case | 10-XFDFN Exposed Pad | - |
| Supplier Device Package | 10-DFN (2.6x2.6) | - |
| Memory Size | 64B | - |
| Voltage - Supply, Battery | 0.9V ~ 5.5V | - |
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1. How does a real-time clock work?
RTC is usually driven by a low-power oscillator (such as a quartz crystal oscillator) and powered by an independent power source (such as a battery), which can continuously time even when the main power supply is off.
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2. How accurate is the real-time clock?
The accuracy of RTC usually depends on the clock source used (such as a crystal oscillator), and most RTC accuracies range from a few seconds to a few minutes per month. For higher precision, a temperature compensated crystal oscillator (TCXO) can be used.
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3. 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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4. Can real-time clocks be used to set timers or alarms?
Yes, many RTC chips have built-in alarm functions that can trigger interrupts at set times to perform specific tasks or wake up the system.
