Details

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BUY RTC58321A https://www.utsource.net/itm/p/12610649.html

Parameter	Symbol	Conditions	Min	Typ	Max	Unit
Supply Voltage	Vcc	Operating	1.6	-	5.5	V
Operating Temperature	Ta		-40	-	85	°C
Clock Frequency	fclk	Nominal	32.768	-	32.768	kHz
Current Consumption	Icc	Vcc = 3V, Ta = 25°C	0.25	0.5	1.0	μA
Time Accuracy	Δt	25°C, 1 year	-20	-	+20	ppm
Output Drive Capability	IOL	Vcc = 5V, Vo = 0.4V	4	-	8	mA
Output Drive Capability	IOH	Vcc = 5V, Vo = 4.6V	-4	-	-8	mA

Instructions for Use:

1. Power Supply:

   • Ensure the supply voltage (Vcc) is within the range of 1.6V to 5.5V.
   • Connect the Vcc pin to the power supply and GND to ground.

2. Clock Input:

   • Connect a 32.768 kHz crystal or oscillator to the X1 and X2 pins for accurate timekeeping.

3. Current Consumption:

   • The RTC58321A is designed for low power consumption, typically consuming around 0.5 μA at 3V and 25°C.

4. Time Accuracy:

   • The time accuracy is ±20 ppm at 25°C over a period of one year. For better accuracy, use a high-quality crystal and ensure stable operating conditions.

5. Output Drive:

   • The output pins can drive up to 8 mA (sink) and -8 mA (source) when Vcc is 5V.
   • Ensure that the load connected to the output pins does not exceed these limits to avoid damage.

6. Operating Temperature:

   • The device is rated to operate from -40°C to 85°C. Ensure that the operating environment does not exceed these temperature limits.

7. Programming:

   • Use the appropriate I2C or SPI commands to set and read the time and date registers.
   • Refer to the datasheet for specific command codes and register addresses.

8. Storage:

   • Store the device in a dry, cool place to prevent damage from moisture and extreme temperatures.

9. Handling:

   • Handle the device with care to avoid static discharge and physical damage.
   • Use proper ESD protection when handling the device.

For detailed programming and application notes, refer to the full datasheet provided by the manufacturer.

(For reference only)