ASM1815 / Alliance Semiconductor Corporation

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Part No.	ASM1815
Manufacturer	ALSC
Size	235 Kbytes
Pages	9 pages
Description	Low Power, 3.3V/3.0V uP Reset Active LOW, Push-Pull Output

Datasheet Summary with AI

1. Product Overview:

️· Product: ASM1815 (and variants like ASM1815R, ASM1815F)
️· Type: Low-Power Microprocessor Reset IC (Supervisory Circuit)
️· Function: Monitors power supply voltage and resets the microprocessor if it goes out of the safe operating range.
️· Manufacturer: Alliance Semiconductor Corporation
️· Website: www.alsc.com

2. Key Features & Variants:

️· Reset Voltage Options: Three options are available for the reset voltage threshold:
- 3.06V (ASM1815R-5, ASM1815-5)
- 2.88V (ASM1815R-10, ASM1815-10)
- 2.55V (ASM1815R-20, ASM1815-20)
️· Reset Tolerance: 5%, 10%, and 20% options (corresponding to the voltage options)
️· Reset Time: 150 milliseconds
️· Output Stage:
- Push-Pull: (Most common) Provides an active-high or active-low reset signal.
- Open-Drain: Requires an external pull-up resistor.
️· Lead-Free Options: Available (indicated by "F" suffix: e.g., ASM1815R-5F)
️· Tape and Reel: Available (indicated by "/T" suffix).

3. Package Options:

️· SOT-23: Small surface-mount package.
️· TO-92: Through-hole package.

4. Ordering Information (Examples):

️· ASM1815R-5: 3.06V reset, 5% tolerance, Push-Pull, SOT-23, LOW reset polarity, Package marking RJLL.
️· ASM1815-10F: 2.88V reset, 10% tolerance, Push-Pull, TO-92, LOW reset polarity, Package marking ASM1815-10F.
️· Package Marking: Package marking differs based on the product code.

5. Reset Polarity:

️· LOW: The reset signal is asserted (active) when the voltage is below the threshold.
️· HIGH: (Available in some variants, indicated by “2” in the part number) The reset signal is asserted when the voltage is above the threshold.

6. Important Notes (from the end of the datasheet):

️· Disclaimer: Alliance Semiconductor provides no warranties regarding the use of this product.
️· Not for Life-Critical Applications: This product is not intended for use in life-critical systems.
️· Terms & Conditions: All sales are governed by Alliance's Terms and Conditions.