Details

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BUY DS1231-20 https://www.utsource.net/itm/p/713250.html
Power Supply Supervisor

Parameter	Symbol	Conditions	Min	Typ	Max	Unit
Operating Voltage	Vcc		2.2	3.6	5.5	V
Standby Current	Icc	Vcc = 5.5V		1		μA
Write Current	Iw	Vcc = 5.5V		1		mA
Read Current	Ir	Vcc = 5.5V		1		mA
Data Retention Time	Tr	Vcc = 2.2V to 5.5V		10		years
Operating Temperature	Toper		-40		85	°C
Storage Temperature	Tstg		-65		150	°C
Write Cycle Time	Twc			5		ms
Read Cycle Time	Trc			0.5		μs
Clock Frequency	fCLK			1	4	MHz

Instructions for DS1231-20

1. Power Supply:

   • Ensure the supply voltage (Vcc) is within the range of 2.2V to 5.5V.
   • The device operates optimally at 3.6V.

2. Current Consumption:

   • During standby, the current consumption is typically 1 μA at 5.5V.
   • During write and read operations, the current consumption is typically 1 mA at 5.5V.

3. Data Retention:

   • The device retains data for up to 10 years when the supply voltage is between 2.2V and 5.5V.

4. Temperature Range:

   • The operating temperature range is from -40°C to 85°C.
   • The storage temperature range is from -65°C to 150°C.

5. Write and Read Cycles:

   • The write cycle time is typically 5 ms.
   • The read cycle time is typically 0.5 μs.

6. Clock Frequency:

   • The clock frequency can range from 1 MHz to 4 MHz.

7. Handling Precautions:

   • Avoid exposing the device to temperatures outside the specified ranges.
   • Ensure proper grounding and decoupling capacitors are used to maintain stable operation.
   • Follow standard ESD (Electrostatic Discharge) precautions when handling the device.

(For reference only)