supervisory circuits with watchdog and manual reset in 5-lead sot-23 preliminary technical data adm6316Cadm6322 rev. prb 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 ri ghts of analog devices. trademarks and registered trademarks are the proper ty of their respective companies. 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: 2.5v to 5v in 100mv increments 4 reset timeout options: 1ms, 20ms, 140ms and 1120ms (min) 4 watchdog timeout options: 6.3ms, 102ms, 1600ms 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 (3a) guaranteed reset output valid to v cc =1v power supply glitch immunity specified over industrial temperature range 5-lead sot-23 package applications microprocessor systems computers controllers intelligent instruments portable equipment general description the adm6316-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. functional block diagram
each part is available in a choice of 26 reset threshold options ranging from 2.5v to 5v in 100mv increments. there are also 4 reset timeout options of 1ms, 20ms, 140ms and 1120ms (min) and 4 watchdog timeout options of 6.3ms 102ms, 1600ms and 25.6s (typ). the adm6316-adm6322 are available in 5-lead sot-23 packages and typically consum e only 3a, 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
adm6316Cadm6322 preliminary technical data rev.prb | page 2 of 8 adm6316-adm6322specifications table 2. v cc =full operating range, t a =t min to t max , unless otherwise noted parameter min typ max units test conditions/comments supply v cc operating voltage range 1 5.5 v supply current 10 20 a v cc =5.5v 5 12 a v cc =3.6v reset threshold voltage v th -1.5% v th v th +1.5% v t a =+25c v th -2.5% v th v th +2.5% v t a =-40c to +85c reset threshold temperature coefficient 40 ppm/c reset threshold hysteresis 3 mv reset timeout period adm63__a 1 1.4 2 ms adm63__b 20 28 40 ms adm63__c 140 200 280 ms adm63__d 1120 1600 2240 ms v cc to reset delay 40 s v cc falling at 1mv/s push-pull output (adm6316, adm6317, adm6318, adm6319, adm6321, adm6322) reset output voltage 0.3 v v cc >=1.0v, i sink =50a 0.3 v v cc >=1.2v, i sink =100a 0.3 v v cc >=2.7v, i sink =1.2ma 0.4 v v cc >=4.5v, i sink =3.2ma 0.8x v cc v v cc >=2.7v, i source =500a v cc -1.5 v v cc >=4.5v, i source =800a reset rise time 5 25 ns from 10% to 90% v cc , c l =5pf, v cc =3.3v reset output voltage 0.3 v v cc >=2.7v, i sink =1.2ma 0.4 v v cc >=4.5v, i sink =3.2ma 0.8x v cc v v cc >=1.8v, i source =150a 0.8x v cc v v cc >=2.7v, i source =500a v cc -1.5 v cc >=4.5v, i source =800a open-drain output (adm6320, adm6321, adm6322) reset output voltage 0.3 v v cc >=1.0v, i sink =50a 0.3 v v cc >=1.2v, i sink =100a 0.3 v v cc >=2.7v, i sink =1.2ma 0.4 v v cc >=4.5v, i sink =3.2ma open-drain reset output leakage current 1 a watchdog input (adm6316, adm6317, adm6318, adm6320, adm6321) watchdog timeout period 4.3 6.3 9.3 ms adm63___w 71 102 153 ms adm63___x 1.12 1.6 2.4 s adm63___y 17.9 25.6 38.4 s adm63___z wdi pulse width 50 ns v il =0.3xv cc , v ih =0.7xv cc , wdi input threshold 0.3xv cc v 0.7xv cc v wdi input current 120 160 a v wdi = v cc , time average -20 -15 a v wdi =0, time average
preliminary technical data adm6316Cadm6322 rev.prb | page 3 of 8 parameter min typ max units test conditions/comments manual reset input (adm6316, adm6317, adm6319, adm6320, adm6322) mr input threshold 0.8 v v th >4.0v 2.0 v v th >4.0v 0.3xv cc v v th <4.0v 0.7xv cc v v th <4.0v mr input pulse width 1 s mr glitch rejection 100 ns mr pull-up resistance 35 52 75 k mr to reset delay 230 ns v cc =5v absolute maximum ratings table 3. t a = 25c unless otherwise noted. parameter rating v cc -0.3v to +6v reset (adm6320, adm6321, adm6322) -0.3v to +6v output current (reset, reset ) 20ma operating temperature range -40c to +85c storage temperature range -65c to +125c ja thermal impedance, sot-23 270c/w lead temperature soldering (10 sec) 300c vapour phase (60 sec) 215c infrared (15 sec) 220c stresses above those listed under absolute maximum ratings may cause permanent damage to the device. this is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. exposure to absolute maximum rating conditions for extended periods may affect device reliability.
adm6316Cadm6322 preliminary technical data rev.prb | page 4 of 8 pin configurations and functional descriptions
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table 4. pin functional descriptions pin no. name description 1 reset (adm6316/18/19/20/21/22) active-low reset output, which is asserted whenever v cc is below the reset.threshold, v th . push-pull output stage for adm6316/18/19. open-drain output stage for adm6320/21/22. reset (adm6317) active-high, push-pull reset output. 2 gnd ground 3 mr (adm6316/17/20) manual reset input. this is an active-low in put which, when forced low for at least 1s, generates a reset. features a 52k internal pull-up. reset (adm6318/19/21/22) active- high, push-pull reset output. 4 wdi (adm6316/17/18/20/21) watchdog input. generates a reset if the logic level on the pin remains low or high for the duration of the watchdog timeout. the timer is cleared if a logic transi tion occurs on this pin or if a reset is generated. leave floating to disable the watchdog timer. mr (adm6319/22) manual reset input. 5 v cc power supply voltage being monitored esd caution ` esd (electrostatic discharge) sensitive device. electrosta tic charges as high as 4000 v readily accumulate on the human body and test equipment and can discharge with out detection. although this product features proprietary esd protection circuitry, permanent dama ge may occur on devices subjected to high energy electrostatic discharges. therefore, proper esd precautions are recommended to avoid performance degradation or loss of functionality.
preliminary technical data adm6316Cadm6322 rev.prb | page 5 of 8 typical performance characteristics figure 1. supply current vs. temperature (adm6316/adm6317/adm6318/adm6320/adm6321) figure 2. v cc falling to reset propagation delay vs. temperature figure 3. manual reset to reset propagation delay vs. temperature (adm6316/adm6317/adm6319/adm6320/adm6322) figure 4. normalized reset timeout period vs. temperature figure 5. normalized watchdog timeout period vs. temperature (adm6316/adm6317/adm6318/adm6320/adm6321) figure 6. maximum v cc transient duration vs. reset threshold overdrive
adm6316Cadm6322 preliminary technical data rev.prb | page 6 of 8 table 5. reset threshold options table 6. reset timeout options table 7. watchdog timeout options table 8. standard models t a =+25c t a =-40c to +85c part no. min typ max min max adm63__50 4.925 5.000 5.075 4.875 5.125 adm63__49 4.827 4.900 4.974 4.778 5.023 adm63__48 4.728 4.800 4.872 4.680 4.920 adm63__47 4.630 4.700 4.771 4.583 4.818 adm63__46 4.561 4.630 4.699 4.514 4.746 adm63__45 4.433 4.500 4.568 4.388 4.613 adm63__44 4.314 4.390 4.446 4.270 4.490 adm63__43 4.236 4.300 4.365 4.193 4.408 adm63__42 4.137 4.200 4.263 4.095 4.305 adm63__41 4.039 4.100 4.162 3.998 4.203 adm63__40 3.940 4.00 4.060 3.900 4.100 adm63__39 3.842 3.900 3.959 3.803 3.998 adm63__38 3.743 3.800 3.857 3.705 3.895 adm63__37 3.645 3.700 3.756 3.608 3.793 adm63__36 3.546 3.600 3.654 3.510 3.690 adm63__35 3.448 3.500 3.553 3.413 3.588 adm63__34 3.349 3.400 3.451 3.315 3.485 adm63__33 3.251 3.300 3.350 3.218 3.383 adm63__32 3.152 3.200 3.248 3.120 3.280 adm63__31 3.034 3.080 3.126 3.003 3.157 adm63__30 2.955 3.000 3.045 2.925 3.075 adm63__29 2.886 2.930 2.974 2.857 3.000 adm63__28 2.758 2.800 2.842 2.730 2.870 adm63__27 2.660 2.700 2.741 2.633 2.768 adm63__26 2.591 2.630 2.669 2.564 2.696 adm63__25 2.463 2.500 2.538 2.438 2.563 suffix min typ max units a 1 1.6 2 ms b 20 30 40 ms c 140 200 280 ms d 1.12 1.60 2.24 s suffix min typ max units w 4.3 6.3 9.3 ms x 71 102 153 ms y 1.12 1.6 2.4 s z 17.9 25.6 38.4 s model reset threshold (v) minimum reset timeout (ms) typical watchdog timeout (s) adm6316larj29cy 2.93 140 1.6 adm6316larj46cy 4.63 140 1.6 adm6318lharj46cy 4.63 140 1.6 adm6319lharj46c 4.63 140 1.6 adm6320parj29cy 2.93 140 1.6 adm6320parj46cy 4.63 140 1.6 adm6321hparj46cy 4.63 140 1.6 adm6322hparj46c 4.63 140 1.6
preliminary technical data adm6316Cadm6322 rev.prb | page 7 of 8 outline dimensions pin 1 1.60 bsc 2.80 bsc 1.90 bsc 0.95 bsc 1 3 4 5 2 0.22 0.08 10 5 0 0.50 0.3 0.15 max seating plane 1.45 max 1.30 1.15 0.90 2.90 bsc 0. 0.45 0.3 compliant to jedec standards mo-178aa figure 7. 5-lead small outline transistor package [sot-23] (rj-5) dimensions shown in millimeters
adm6316Cadm6322 preliminary technical data rev.prb | page 8 of 8 ordering guide (( (( ) (( (( (( #*#+, - . $ / 0/ *1,2/+! , *3 43 ,5#.4 6 3 ,5#.,27 3 0#*. +!,* #80#+! /+# !*2#3 3 . 9& ! :!2# ;#3 )3 .4#!; . #<# 7+#<7 "; - . $ #<# ,8# / #+, ; 3 8< 8,*$
3 8< 8,*$ 3 8< 8,*$ 3 8< 8,*$ ! 7; 2 ,8# / #+, ; 3 -8< =0$ >3 8< =0$ ?3 -< =0$ @3 < =0$ figure 8. ordering code structure 1 contact factory for availability of non-standard models (see table 8 for list of standard models) model 1 temperature range quantity package type branding adm6316__arj __ _ _ -rl -40c to +85c 10k sot-23-5 n00 adm6316__arj __ _ _ -r7 -40c to +85c 3k sot-23-5 n00 adm6317__arj __ _ _ -rl -40c to +85c 10k sot-23-5 n01 adm6317__arj __ _ _ -r7 -40c to +85c 3k sot-23-5 n01 adm6318__arj __ _ _ -rl -40c to +85c 10k sot-23-5 n02 adm6318__arj __ _ _ -r7 -40c to +85c 3k sot-23-5 n02 adm6319__arj __ _ _ -rl -40c to +85c 10k sot-23-5 n03 adm6319__arj __ _ _ -r7 -40c to +85c 3k sot-23-5 n03 adm6320__arj __ _ _ -rl -40c to +85c 10k sot-23-5 n04 adm6320__arj __ _ _ -r7 -40c to +85c 3k sot-23-5 n04 adm6321__arj __ _ _ -rl -40c to +85c 10k sot-23-5 n05 adm6321__arj __ _ _ -r7 -40c to +85c 3k sot-23-5 n05 adm6322__arj __ _ _ -rl -40c to +85c 10k sot-23-5 n06 adm6322__arj __ _ _ -r7 -40c to +85c 3k sot-23-5 n06 ? 2004 analog devices, inc. all rights reserved. trademarks and registered trademarks are the proper ty of their respective companies. printed in the u.s.a. pr04533-0-3/04(prb) a: -40c to +85c
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