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ASM813LEPA-T Datasheet(PDF) 1 Page - Alliance Semiconductor Corporation |
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ASM813LEPA-T Datasheet(HTML) 1 Page - Alliance Semiconductor Corporation |
1 / 16 page Alliance Semiconductor 2575 Augustine Drive . Santa Clara, CA 95054 . Tel: 408.855.4900 . Fax: 408.855.4999 . www.alsc.com Notice: The information in this document is subject to change without notice February 2005 Low Power µP Supervisor Circuits ASM705 / 706 / 707 / 708 ASM813L rev 1.5 Typical Operating Circuit +5V Regulator VCC PFI MR (RESET) WDI WDO PFO VCC (RESET) I/O LINE NMI INTERRUPT Unregulated DC R1 R2 µP ASM705 ASM706 (ASM813L) RESET RESET General Description The ASM705 / 706 / 707 / 708 and AS813L are cost effective CMOS supervisor circuits that monitors power-supply and battery voltage level, and µP/µC operation. The family offers several functional options. Each device generates a reset signal during power-up, power-down and during brownout conditions. A reset is generated when the supply drops below 4.65V (ASM705/707/813L) or 4.40V (ASM706/708). For 3V power supply applications, refer to the ASM705P/R/S/T data sheet. In addition, the ASM705/706/813L feature a 1.6 second watchdog timer. The ASM707/708 have both active-HIGH and active-LOW reset outputs but no watchdog function. The ASM813L has the same pin-out and functions as the ASM705 but has an active-HIGH reset output. A versatile power-fail circuit has a 1.25V threshold, useful in low battery detection and for monitoring non-5V supplies. All devices have a manual reset (MR) input. The watchdog timer output will trigger a reset if connected to MR. All devices are available in 8-pin DIP, SO and MicroSO packages. Features • Precision power supply monitor •4.65V threshold (ASM705/707/813L) •4.40V threshold (ASM706/708) • Debounced manual reset input • Voltage monitor •1.25V threshold •Battery monitor / Auxiliary supply monitor • Watchdog timer (ASM705/706/813L) • 200ms reset pulse width • Active HIGH reset output (ASM707/708/813L) • MicroSO package Applications • Computers and embedded controllers • Portable/Battery-operated systems • Intelligent instruments • Wireless communication systems • PDAs and hend-held equipment • Automative Systems • Safety Systems |
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