ASM8500 Datasheet | Alliance Semiconductor Corporation

Description The ASM8500 is a voltage supervisory device with a low-power, 5V/3.3V µP Reset, active LOW, open-drain output. Maximum supply current over temperature is a low 6µA. The ASM8500 generates an active LOW reset signal whenever the monitored supply is out of tolerance. A precision reference and parator circuit monitor power supply (VCC) level. Reset threshold tolerance level is ±1.5%. When an out-of-tolerance condition is detected, an internal power-fail signal is generated which forces an active LOW reset signal. After VCC returns to an in-tolerance condition, the reset signal remains active for .. 1.5ms to allow the power supply and system microprocessor to stabilize. The ASM8500 is designed with a open-drain output stage and operates over the extended industrial temperature range. Devices are available in pact surface mount SOT-89 packages. Other low power products in this family include the ASM1810/ 11/12/15/16/17, ASM1233D and ASM1233M. Typical Operating Circuit Microprocessor RESET RESET Block Diagram Key Features - - - - - - - - Low Supply Current - 6 µA maximum (5.5 V) Automatically restarts a microprocessor after power failure 1.5ms reset delay after VCC returns to an in-tolerance condition Active LOW power-up reset Precision temperature-pensated voltage reference and parator Eliminates external ponents pact surface mount SOT-89 package Operating temperature -40°C to +85°C Supply Tolerance Bias 5ΚΩ RESET + Reference Delay 1.5ms Typical Applications - - - - - Set-top boxes Cellular phones PDAs Energy management systems Embedded control systems Alliance Semiconductor 2575 Augustine Drive . Santa Clara, CA 95054 . Tel: 408.855.4900 . Fax: 408.855.4999 . .alsc. Notice: The information in this document is subject to change without notice November 2003 rev 1.0 Pin Configuration RESET .. Pin Description Pin # 1 2 3 Pin Name VCC GND RESET Description Power supply input Ground...