Details

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BUY MAX705ESA https://www.utsource.net/itm/p/12603684.html

Parameter	Symbol	Conditions	Min	Typical	Max	Unit
Supply Voltage	VCC	Operating	2.1	-	5.5	V
Supply Current (Active)	ICC	VCC = 5V, fosc = 32kHz	-	20	-	渭A
Supply Current (Shutdown)	ICC	VCC = 5V	-	1	-	渭A
Watchdog Timer Period	TWDT	VCC = 5V, fosc = 32kHz	1.6	2.1	2.6	s
Reset Output Low Time	tRSTL	VCC = 5V	100	200	400	ms
Manual Reset Input Low	tMRSTL	VCC = 5V	10	20	40	ms
Power-On Reset Threshold	VPORH	Rising	2.1	-	5.5	V
Power-On Reset Threshold	VPORL	Falling	2.1	-	5.5	V

Instructions for Using the MAX705ESA

1. Supply Voltage (VCC):

   • Ensure the supply voltage is within the range of 2.1V to 5.5V.
   • The device operates optimally at 5V.

2. Supply Current:

   • In active mode, the typical supply current is 20渭A at 5V.
   • In shutdown mode, the typical supply current is 1渭A at 5V.

3. Watchdog Timer (WDT):

   • The watchdog timer period is approximately 2.1 seconds at 5V and 32kHz.
   • Adjust the external resistor if a different timing is required.

4. Reset Output (RST):

   • The reset output remains low for 200ms after power-on or manual reset.
   • Ensure the reset pulse duration is sufficient to initialize the connected system.

5. Manual Reset (MR):

   • To manually trigger a reset, hold the MR pin low for at least 20ms.
   • This can be done using a push-button or a logic signal.

6. Power-On Reset (POR):

   • The device triggers a reset when the supply voltage rises above 2.1V and falls below 2.1V.
   • Ensure the power supply is stable and does not drop below the threshold during operation.

7. External Components:

   • Use a 32.768kHz crystal for the oscillator.
   • Connect appropriate decoupling capacitors close to the VCC and GND pins to ensure stable operation.

8. Handling and Storage:

   • Handle the device with care to avoid static damage.
   • Store in a dry environment to prevent moisture-related issues.

9. Application Notes:

   • Refer to the datasheet for detailed application notes and circuit diagrams.
   • Ensure all connections are secure and follow recommended PCB layout guidelines.

By following these instructions, you can effectively use the MAX705ESA in your microcontroller or system reset applications.

(For reference only)