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ap1705/6/7 processor supervisory circuits this datasheet contains new product information. anachip corp. reserves the rights to modify the product specification without notice. no liability is assumed as a result of the use of this product. no rights under any patent accompany the sale of the product. rev. 1.0 nov. 17, 2005 1/13 ? features - power-on reset generator with fixed delay time of 200ms (ap1705/6/7) - manual reset input (ap1705/7) - reset output available in active-low (ap1705/6/7), active-high (ap1706/7) - supply voltage supervision range 2.5v, 3v, 3.3v, 5v - watchdog timer (ap1705/6/7) - supply current of 25a (typ.) - sot23-5, sot23-6 ,tsot23-5 and tsot23-6 pb-free package - temperature range: -40c to 85c ? applications - applications using dsps, microcontrollers, or microprocessors - industrial equipment - programmable controls - automotive systems - portable/battery-powered equipment - intelligent instruments - wireless communications systems - notebook/desktop computers ? ordering information ap170xxx part no. 5: ap1705 6: ap1706 voltage a: 4.63 b: 4.38 c: 4.00 d: 3.08 e: 2.93 f: 2.63 g: 2.25 7: ap1707 package w5:sot23-5 w6:sot23-6 tw5:tsot23-5 tw6:tsot23-6 ? general description the ap1705/6/7 family of supervisors provides circuit initialization and timing supervision, primarily for dsp and processor-based systems. during power-on, reset is asserted when supply voltage v cc becomes higher than 1.1v. thereafter, the supply voltage supervisor monitors v cc and keeps reset active as long as v cc remains below the threshold voltage v it- . an internal timer delays the return of the output to the inactive state (high) to ensure proper system reset. the delay time ,t d , starts after v cc has risen above the threshold voltage v it- . when the supply voltage drops below the threshold voltage v it- , the output becomes active (low ) again. no external components are required. all the devices of this family have a fixed-sense threshold voltage v it- set by an internal voltage divider. the ap1705/7 devices incorporate a manual reset input, mr . a low level at mr causes reset to become active. the ap1706/7 devices include a high-level output reset. ap1705/6/7 have a watchdog timer that is periodically triggered by a positive or negative transition at wdi. when the supervising system fails to retrigger the watchdog circuit within the time-out interval, ttout, reset becomes active for the time period td. this event also reinitializes the watchdog timer. leaving wdi unconnected disables the watchdog. in applications where the input to the wdi pin may be active (transitioning high and low) when the ap1705/6/7 asserting reset , the ap1705/6/7 does not return to a non-reset state when the input voltage is above vt. if the application requires that input to wdi is active when reset is asserted, wdi must be decoupled from the active signal. this can be accomplished by using an n-channel fet in series with the wdi pin, with the gate of the fet connected to the reset output as shown in figure 1. wdi reset ap1706 figure 1. wdi external the product spectrum is designed for supply voltage of 2.5v, 3v, 3.3v and 5v. the circuits are available in a sot23-5l, sot23-6l, and tsot23-5l,tsot23-6l packages. the ap1705/6/7 devices are characterized for operation over a temperature range of -40 o c to 85 o c.
ap1705/6/7 processor supervisory circuits anachip corp. www.anachip.com.tw rev. 1.0 nov. 17, 2005 2/13 ? pin assignments sot23-5/tsot23-5 (top view) 1 2 v cc ap1705 2 5 3 4 reset gnd wdi mr (top view) 1 2 v cc ap1706 2 5 reset gnd sot23-5/tsot23-5 3 4 reset wdi sot23-6/tsot23-6 (top view) 1 2 v cc ap1707 2 6 3 4 reset reset gnd mr 5 wdi ? pin descriptions name description gnd ground reset (reset) reset output pin v cc operating voltage input wdi watchdog input mr manual reset ? absolute maxi mum ratings (over operating free-air temperature range, unless otherwise noted)* symbol parameter rating unit v cc supply voltage (see note 1) 6.5 v reset, reset , mr , wdi (see note 1) -0.3 to (v cc +0.3) v i ol maximum low output current 5 ma i oh maximum high output current -5 ma i ik input clamp current range(v i < 0 or v i > v cc ) 10 ma i ok output clamp current range(v o < 0 or v o > v cc ) 10 ma operating factor above t a = 25 o c 3.5 mw/c t a < 25 o c power rating 437 mw t a = 70 o c power rating 280 mw p d continuous total power dissipation t a = 85 o c power rating 227 mw t a operating free-air temperature range -40 to 85 c t stg storage temperature range -65 to 150 c t soldering temperature 260 c * stresses beyond those listed under ?absolute maximum ratings? may cause permanent damage to the device. these are stress rating s only, and functional operation of the device at these or any other conditions beyond those indicated under ?recommended operati ng conditions? is not implied. exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. note 1: all voltage values are with respect to gnd.
ap1705/6/7 processor supervisory circuits anachip corp. www.anachip.com.tw rev. 1.0 nov. 17, 2005 3/13 ? recommended oper ating conditions symbol parameter min. max. unit v cc supply voltage 1.1 6 v v in input voltage 0 (v cc +0.3) v v ih high-level input voltage at mr and wdi 0.8 ? t/ ? v input transition rise and fall rate at mr or wdi - 100 ns/v t a operating free-air temperature range -40 85 o c tr vcc rising time (vcc = 0~v t ) 1 us ? electrical characteristics (over recommended operating free-air temperature range, unless otherwise noted) sym. parameter test conditions min. typ. max. unit ap1705/6/7-25 v cc =v it- +0.2v i oh =-20a ap1705/6/7-30 ap1705/6/7-33 v cc =v it- +0.2v i oh =-30a 0.8 note 2: the lowest supply voltage at which reset becomes active. t r , v cc > 15s/v
ap1705/6/7 processor supervisory circuits anachip corp. www.anachip.com.tw rev. 1.0 nov. 17, 2005 4/13 ? electrical characteristics (over recommended operating free-air temperature range, unless otherwise noted) sym. parameter test conditions min. typ. max. unit ap1705/6/7-25 2.21 2.25 2.30 ap1705/6/7-30 2.59 2.63 2.69 ap1705/6/7-33 2.88 2.93 3.00 ap1705/6/7-35 3.00 3.08 3.15 ap1705/6/7-43 3.93 4.00 4.08 ap1705/6/7-45 4.31 4.38 4.46 ap1705/6/7-50 t a = 0 o c-85 o c 4.56 4.63 4.71 v ap1705/6/7-25 2.20 2.25 2.30 ap1705/6/7-30 2.57 2.63 2.69 ap1705/6/7-33 2.86 2.93 3.00 ap1705/6/7-35 3.00 3.08 3.15 ap1705/6/7-43 3.92 4.00 4.08 ap1705/6/7-45 4.30 4.38 4.46 v it- negative-going input threshold voltage (see note 3) ap1705/6/7-50 t a = -40 o c-85 o c 4.55 4.63 4.71 v ap1705/6/7-25 ap1705/6/7-30 ap1705/6/7-33 ap1705/6/7-35 - 50 - ap1705/6/7-43 ap1705/6/7-45 v hys hysteresis at v cc input ap1705/6/7-50 - 50 - mv i ih(av) average high-level input current wdi=v cc , time average (dc=88%) - 120 - a i il(av) average low-level input current wdi wdi=0.3v, v cc =5.5v time average (dc=12%) - -15 - a wdi wdi=v cc - 140 190 i ih high-level input current mr mr =v cc ? tc v out temperature coefficient 50 - ppm/ o c c i input capacitance at mr , wdi v i =0v to 5.5v - 5 - pf note 3: to ensure best stability of the threshold voltage, a bypass capacitor (ceramic, 0.1f) should be placed near the supply terminals. note 4: the reset short-circuit current is the maximum pull-up current when reset is driven low by a p bidirectional reset pin.
ap1705/6/7 processor supervisory circuits anachip corp. www.anachip.com.tw rev. 1.0 nov. 17, 2005 5/13 ? timing requirements (at r l =1m ? , c l =50pf, t a =25 o c) sym. parameter test conditions min. typ. max. unit at v cc v cc =v it- +0.2v, v cc =v it- -0.2v 3 - - s at mr v cc > v it- +0.2v, v il =0.3 ? switching characteristics (at r l =1m ? , c l =50pf, t a =25 o c) sym. parameter test conditions min. typ. max. unit t tout watchdog time out ap1705/6/7 v cc > v it- +0.2v, see timing diagram 0.9 1.6 2.5 s t d delay time ap1705/6/7 v cc > v it- +0.2v, see timing diagram 120 200 300 ms mr to reset delay (ap1705/7) v cc >v it- +0.2v, v il =0.3 ? application circuit v cc reset mr wdi gnd ap1705/6/7 v cc reset i/o gnd v cc 100nf
ap1705/6/7 processor supervisory circuits anachip corp. www.anachip.com.tw rev. 1.0 nov. 17, 2005 6/13 ? function/truth table inputs outputs mr * v cc > v it reset reset** l 0 l h l 1 l h h 0 l h h 1 h l * ap1705/7 ** ap1706/7 ? functional block diagram watchdog timer logic reset logic reset * reset mr ** + - transition detector wdi v cc v ref 300k 60k * ap170/6/7 ** ap1705/7 ? ? ? timing diagram undefined t d t d reset v cc v it 1.1v t tout t d undefined wdi
ap1705/6/7 processor supervisory circuits anachip corp. www.anachip.com.tw rev. 1.0 nov. 17, 2005 7/13 ? typical characteristics
ap1705/6/7 processor supervisory circuits anachip corp. www.anachip.com.tw rev. 1.0 nov. 17, 2005 8/13 ? typical characteristics (continued) i oh -high level outpur current - a
ap1705/6/7 processor supervisory circuits anachip corp. www.anachip.com.tw rev. 1.0 nov. 17, 2005 9/13 ? marking information xx : identification code (see appendix) y : year: 0-9 m : month: a~l sot23-5l xx y m 7 12 3 4 5 xx : identification code (see appendix) y : year: 0-9 m : month: a~l sot23-6l xx y m 7 12 3 4 6 5 xx : identification code (see appendix) y : year: 0-9 m : month: a~l tsot23-5l xx y m 7 12 3 4 5 xx : identification code (see appendix) y : year: 0-9 m : month: a~l tsot23-6l xx y m 7 12 3 4 6 5 appendix package type part number identification code sot23-5,tsopt23-5 ap1705a wa sot23-5,tsopt23-5 ap1705b wb sot23-5,tsopt23-5 ap1705c wc sot23-5,tsopt23-5 ap1705d wd sot23-5,tsopt23-5 ap1705e we sot23-5,tsopt23-5 ap1705f wf sot23-5,tsopt23-5 ap1705g wg sot23-5,tsopt23-5 ap1706a wh sot23-5,tsopt23-5 ap1706b wi sot23-5,tsopt23-5 ap1706c wj sot23-5,tsopt23-5 ap1706d wk sot23-5,tsopt23-5 ap1706e wl sot23-5,tsopt23-5 ap1706f wm sot23-5,tsopt23-5 ap1706g wn sot23-6,tsopt23-6 ap1707a wo sot23-6,tsopt23-6 ap1707b wp sot23-6,tsopt23-6 ap1707c wq sot23-6,tsopt23-6 ap1707d wr sot23-6,tsopt23-6 ap1707e ws sot23-6,tsopt23-6 ap1707f wt sot23-6,tsopt23-6 ap1707g wu
ap1705/6/7 processor supervisory circuits anachip corp. www.anachip.com.tw rev. 1.0 nov. 17, 2005 10/13 ? package information (1) package type: sot23-5l l e e he d a2 a1 b(5x) a view c l1 1(4x) 2(4x) e1 gauge plane c see view c dimensions in millimeters dimensions in inches symbol min. nom. max. min. nom. max. a 1.05 - 1.35 0.041 - 0.053 a1 0.05 - 0.15 0.002 - 0.006 a2 1.00 1.10 1.20 0.039 0.043 0.047 b 0.25 - 0.50 0.010 - 0.020 c 0.08 - 0.20 0.003 - 0.008 d 2.70 2.90 3.00 0.106 0.114 0.118 e 1.50 1.60 1.70 0.059 0.063 0.067 he 2.60 2.80 3.00 0.102 0.110 0.118 l 0.30 - 0.60 0.012 - 0.024 l1 0.50 0.60 0.70 0.020 0.024 0.028 e 1.80 1.90 2.00 0.071 0.075 0.079 e1 0.85 0.95 1.05 0.033 0.037 0.041 0 o 5 o 10 o 0 o 5 o 10 o 1 3 o 5 o 7 o 3 o 5 o 7 o 2 6 o 8 o 10 o 6 o 8 o 10 o
ap1705/6/7 processor supervisory circuits anachip corp. www.anachip.com.tw rev. 1.0 nov. 17, 2005 11/13 ? package information (continued) (2) package type: sot23-6l e he d a2 a1 b(6x) e e1 a 1(4x) 2(4x) l view c l1 gauge plane c see view c dimensions in millimeters dimensions in inches symbol min. nom. max. min. nom. max. a 1.05 - 1.35 0.041 - 0.053 a1 0.05 - 0.15 0.002 - 0.006 a2 1.00 1.10 1.20 0.039 0.043 0.047 b 0.25 - 0.50 0.010 - 0.020 c 0.08 - 0.20 0.003 - 0.008 d 2.70 2.90 3.00 0.106 0.114 0.118 e 1.50 1.60 1.70 0.059 0.063 0.067 he 2.60 2.80 3.00 0.102 0.110 0.118 l 0.30 - 0.60 0.012 - 0.024 l1 0.50 0.60 0.70 0.020 0.024 0.028 e 1.80 1.90 2.00 0.071 0.075 0.079 e1 0.85 0.95 1.05 0.033 0.037 0.041 0 o 5 o 10 o 0 o 5 o 10 o 1 3 o 5 o 7 o 3 o 5 o 7 o 2 6 o 8 o 10 o 6 o 8 o 10 o
ap1705/6/7 processor supervisory circuits anachip corp. www.anachip.com.tw rev. 1.0 nov. 17, 2005 12/13 ? package information (continued) (3) package type: tsot23-5l e1 e e e1 b d a a1 a2 y 2 4x 1 l1 r l c l2 gauge plane dimensions in millimeters dimensions in inches symbol min. nom. max. min. nom. max. a 0.75 - 0.90 0.030 - 0.035 a1 0.00 - 0.10 0.000 - 0.004 a2 0.70 0.75 0.80 0.028 0.030 0.031 b 0.35 - 0.51 0.014 - 0.020 c 0.10 - 0.25 0.004 - 0.010 d 2.80 2.90 3.00 0.110 0.114 0.118 e 2.60 2.80 3.00 0.102 0.110 0.118 e1 1.50 1.60 1.70 0.059 0.063 0.067 e 0.95 bsc. 0.037 e1 1.90 bsc. 0.075 l 0.37 - - 0.015 - - l1 0.60 ref. 0.024 l2 0.25 bsc. 0.010 y - - 0.10 - - 0.004 r 0.10 - - 0.004 - - 0 o - 8 o 0 o - 8 o 1 7 o nom. 7 o nom. 2 5 o nom. 5 o nom.
ap1705/6/7 processor supervisory circuits anachip corp. www.anachip.com.tw rev. 1.0 nov. 17, 2005 13/13 ? package information (continued) (4) package type: tsot23-6l e1 e e e1 b d a a1 a2 y 2 4x 1 l1 r l c l2 gauge plane dimensions in millimeters dimensions in inches symbol min. nom. max. min. nom. max. a 0.75 - 0.90 0.030 - 0.035 a1 0.00 - 0.10 0.000 - 0.004 a2 0.70 0.75 0.80 0.028 0.030 0.031 b 0.35 - 0.51 0.014 - 0.020 c 0.10 - 0.25 0.004 - 0.010 d 2.80 2.90 3.00 0.110 0.114 0.118 e 2.60 2.80 3.00 0.102 0.110 0.118 e1 1.50 1.60 1.70 0.059 0.063 0.067 e 0.95 bsc. 0.037 e1 1.90 bsc. 0.075 l 0.37 - - 0.015 - - l1 0.60 ref. 0.024 l2 0.25 bsc. 0.010 y - - 0.10 - - 0.004 r 0.10 - - 0.004 - - 0 o - 8 o 0 o - 8 o 1 7 o nom. 7 o nom. 2 5 o nom. 5 o nom.

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