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IMP707CSA Datasheet(PDF) 1 Page - IMP, Inc |
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IMP707CSA Datasheet(HTML) 1 Page - IMP, Inc |
1 / 9 page © 1999 IMP, Inc. 408-432-9100/www.impweb.com 1 Applications N Computers and embedded controllers N Battery-operated systems N Intelligent instruments N Wireless communication systems N PDAs and handheld equipment Block Diagrams IMP705/6/7/8, 8 IMP705/6/7/8, 8113L 3L POWER MANAGEMENT RESET RESET V CC 0.25mA RESET Generator 4.65V (IMP707) 4.40V (IMP708) VCC + – + MR IMP707 IMP708 PFO GND 1.25V – + PFI 705_02.eps 1.25V – + MR WDI IMP705 IMP706 IMP813L WDO RESET (RESET) (IMP813L) PFO GND V CC 0.25mA RESET Generator 4.65V (IMP705/813L) 4.40V (IMP706) VCC + – + PFI Timebase Watchdog Timer Transition Detector 705_01.eps Lo Low w-P -Poow wer er µ µP Super P Supervisor Cir visor Circuits cuits – W – Watc atchdog timer hdog timer – Br – Bro ownout det wnout detection ection – P – Po ow wer suppl er supply monit y monitor or The IMP705/706/707/708 and IMP813L CMOS supervisor circuits monitor power-supply and battery voltage level, and µP/µC operation. Compared to pin-compatible devices offered by Maxim Integrated Products, IMP devices feature 60 percent lower maximum supply current. 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 (IMP705/707/813L) or 4.40V (IMP706/708). For 3V power supply applications, refer to the IMP705P/R/S/T data sheet. In addition, the IMP705/706/813L feature a 1.6 second watchdog timer. The IMP707/708 have both active-HIGH and active-LOW reset outputs but no watchdog function. The IMP813L has the same pin-out and functions as the IMP705 but has an active-HIGH reset output. A versatile power-fail circuit has a 1.25V threshold, useful in checking battery levels and 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. Key Features N Improved replacements for the Maxim MAX705/6/7/8, MAX813L – 140µA maximum supply current – 60% improvement N Precision power supply monitor – 4.65V threshold (IMP705/707/813L) – 4.40V threshold (IMP706/8) N Debounced manual reset input N Voltage monitor – 1.25V threshold – Battery monitor/Auxiliary supply monitor N Watchdog timer (IMP705/706/813L) N 200ms reset pulse width N Active HIGH reset output (IMP707/708/813L) N MicroSO package |
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