Details

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BUY RTC4543SAA https://www.utsource.net/itm/p/12609715.html

Parameter	Symbol	Conditions	Min	Typ	Max	Unit
Supply Voltage	VDD	-	2.0	-	5.5	V
Operating Temperature	Toper	-	-40	-	85	掳C
Storage Temperature	Tstg	-	-65	-	150	掳C
Clock Frequency	fCLK	-	32.768	-	32.768	kHz
Output Current (IOL)	IOL	VDD = 5V, VOUT = 0.4V	10	-	20	mA
Output Current (IOH)	IOH	VDD = 5V, VOUT = 4.6V	-10	-	-20	mA
Input Leakage Current	IIK	VDD = 5V	-1	-	1	渭A
Quiescent Current	IQ	VDD = 5V, No Load	0.5	-	2	渭A
Time Update Rate	tUPD	-	-	1	-	s
Time Accuracy	tACC	25掳C, 32.768kHz crystal	-20	0	+20	ppm

Instructions for RTC4543SAA

1. Power Supply:

   • Ensure the supply voltage (VDD) is within the range of 2.0V to 5.5V.
   • The device operates over a wide temperature range from -40掳C to 85掳C.

2. Clock Source:

   • Use a 32.768kHz crystal oscillator for accurate timekeeping.
   • Ensure the crystal is properly connected to the designated pins.

3. Output and Input Currents:

   • The output current (IOL) should not exceed 20mA when VDD = 5V and VOUT = 0.4V.
   • The output current (IOH) should not exceed -20mA when VDD = 5V and VOUT = 4.6V.
   • The input leakage current (IIK) should be within 卤1渭A at VDD = 5V.

4. Quiescent Current:

   • The quiescent current (IQ) is typically around 0.5渭A but can go up to 2渭A under no load conditions.

5. Time Update and Accuracy:

   • The time is updated every second.
   • The time accuracy is 卤20ppm at 25掳C with a 32.768kHz crystal.

6. Storage and Handling:

   • Store the device in a temperature range of -65掳C to 150掳C.
   • Handle with care to avoid damage from static electricity and physical stress.

7. Programming:

   • Use the appropriate control registers to set and read the time and date.
   • Refer to the datasheet for detailed register maps and programming instructions.

8. Application Notes:

   • For optimal performance, ensure the PCB layout minimizes noise and interference.
   • Use decoupling capacitors close to the power supply pins to stabilize the supply voltage.

For more detailed information, refer to the official datasheet of the RTC4543SAA.

(For reference only)