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ADM6320CY29ARJ Datenblatt(PDF) 1 Page - Analog Devices |
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ADM6320CY29ARJ Datenblatt(HTML) 1 Page - Analog Devices |
1 / 11 page Supervisory Circuits with Watchdog and Manual Reset in 5-Lead SOT-23 ADM6316/ADM6317/ADM6318/ADM6319/ADM6320/ADM6321/ADM6322 Rev.PrC Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.326.8703 © 2004 Analog Devices, Inc. All rights reserved. FEATURES 26 reset threshold options: 2.5 V to 5 V in 100 mV increments 4 reset timeout options: 1 ms, 20 ms, 140 ms, and 1120 ms (Min) 4 watchdog timeout options: 6.3 ms, 102 ms, 1600 ms, and 25.6s (Typ) Manual reset input Reset output stages: Push-pull active-low Open-drain active-low Push-pull active-high Low power consumption (3 µA) Guaranteed reset output valid to VCC = 1 V Power supply glitch immunity Specified over industrial temperature range 5-lead SOT-23 package APPLICATIONS Microprocessor systems Computers Controllers Intelligent instruments Portable equipment FUNCTIONAL BLOCK DIAGRAM ADM6316 VCC VCC MR GND WDI RESET RESET GENERATOR WATCHDOG DETECTOR DEBOUNCE VREF Figure 1. GENERAL DESCRIPTION The ADM6316/ADM6317/ADM6318/ADM6319/ADM6320/ ADM6321/ADM6322 are supervisory circuits which monitor power supply voltage levels and code execution integrity in microprocessor-based systems. As well as providing power on reset signals, an on-chip watchdog timer can reset the microprocessor if it fails to strobe within a preset timeout period. A reset signal can also be asserted by means of an external push-button, through a manual reset input. The seven parts feature different combinations of watchdog input, manual reset input and output stage configuration, as shown in Table 1. Each part is available in a choice of 26 reset threshold options ranging from 2.5 V to 5 V in 100 mV increments. There are also four reset timeout options of 1 ms, 20 ms, 140 ms, and 1120 ms (min) and four watchdog timeout options of 6.3 ms, 102 ms, 1600 ms, and 25.6s (typ). The ADM6316-ADM6322 are available in 5-lead SOT-23 packages and typically consume only 3 µA, making them suitable for use in low power portable applications. Table 1. Selection Table Output Stage Part No. Watchdog Manual Reset RESET RESET ADM6316 Yes Yes Push-Pull – ADM6317 Yes Yes – Push-Pull ADM6318 Yes – Push-Pull Push-Pull ADM6319 – Yes Push-Pull Push-Pull ADM6320 Yes Yes Open-Drain – ADM6321 Yes - Open-Drain Push-Pull ADM6322 – Yes Open-Drain Push-Pull PRELIMINARY TECHNICAL DATA |
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