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? 2004-2014 microchip technology inc. ds20001906d-page 1 mcp102/103/121/131 features: ultra-low supply current: 1.75 a (steady-state maximum) precision monitoring options of: - 1.90v, 2.32v, 2.63v, 2.93v, 3.08v, 4.38v and 4.63v resets microcontroller in a power-loss event rst pin (active-low): - mcp121: active-low, open-drain - mcp131: active-low, open-drain with inter- nal pull-up resistor - mcp102 and mcp103: active-low, push-pull reset delay timer (120 ms delay, typical) available in sot-23, to-92 and sc70 packages temperature range: - extended: -40c to +125c ( except mcp1xx-195 ) - industrial: -40c to +85c ( mcp1xx-195 only ) pb-free devices applications: critical microcontroller and microprocessor power-monitoring applications computers intelligent instruments portable battery-powered equipment general description: the mcp102/103/121/131 devices are voltage supervisor devices designed to keep a microcontroller in reset until the system voltage has reached and stabilized at the proper level for reliable system operation. ta b l e 1 shows the available features for these devices. package types block diagram sot-23/sc70 v ss rst mcp102/121/131 1 2 3 v dd rst to-92 sot-23/sc70 v dd v ss mcp103 1 2 3 rst v dd v ss v dd comparator +C output driver rst band gap reference v ss reset delay circuit r (1) note: mcp131 only micropower volt age supervisors downloaded from: http:///
mcp102/103/121/131 ds20001906d-page 2 ? 2004-2014 microchip technology inc. table 1: device features device output reset delay (typ) package pinout (pin # 1, 2, 3) comment type pull-up resistor mcp102 push-pull no 120 ms rst , v dd , v ss mcp103 push-pull no 120 ms v ss , rst , v dd mcp121 open-drain external 120 ms rst , v dd , v ss mcp131 open-drain internal (~95 k ? )120ms rst , v dd , v ss mcp111 open-drain external no v out , v ss , v dd see mcp111/112 data sheet (ds21889) mcp112 push-pull no no v out , v ss , v dd see mcp111/112 data sheet (ds21889) downloaded from: http:///
? 2004-2014 microchip technology inc. ds20001906d-page 3 mcp102/103/121/131 1.0 electrical characteristics absolute maximum ratings? v dd . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.0v input current (v dd ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 ma output current (rst ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 ma rated rise time of v dd . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100v/s all inputs and outputs (except rst ) w.r.t. v ss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.6v to (v dd +1.0v) rst output w.r.t. v ss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.6v to 13.5v storage temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -65c to + 150c ambient temperature with power applied . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40c to + 125c maximum junction temperature with power applied . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150c esd protection on all pins. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 kv ? notice: stresses above those listed under maximum ratings may cause permanent damage to the device. this is a stress rating only and functional operation of the device at those or any other conditions above those indi cated in the operational listings of this specification is not implied. exposure to maximum rating conditions for extended period s may affect device reliability. dc characteristics electrical specifications: unless otherwise indicated, all limits are specified for: v dd = 1v to 5.5v, r pu = 100 k ? ( mcp121 only), t a = -40c to +125c. parameters sym. min. typ. max. units conditions operating voltage range v dd 1.0 5.5 v specified v dd value to rst low v dd 1.0 v i rst =10a, v rst <0.2v operating current mcp102, mcp103, mcp121 i dd < 1 1.75 a reset power-up timer (t rpu ) inactive 20.0 a reset power-up timer (t rpu ) active mcp131 i dd < 11 . 7 5 av dd >v trip and reset power-up timer (t rpu ) inactive 7 5 av dd mcp102/103/121/131 ds20001906d-page 4 ? 2004-2014 microchip technology inc. v dd trip point mcp1xx-195 v trip 1.872 1.900 1.929 v t a = +25c ( note 1 ) 1.853 1.900 1.948 v t a = -40c to +85c ( note 2 ) mcp1xx-240 2.285 2.320 2.355 v t a = +25c ( note 1 ) 2.262 2.320 2.378 v note 2 mcp1xx-270 2.591 2.630 2.670 v t a = +25c ( note 1 ) 2.564 2.630 2.696 v note 2 mcp1xx-300 2.886 2.930 2.974 v t a = +25c ( note 1 ) 2.857 2.930 3.003 v note 2 mcp1xx-315 3.034 3.080 3.126 v t a = +25c ( note 1 ) 3.003 3.080 3.157 v note 2 mcp1xx-450 4.314 4.380 4.446 v t a = +25c ( note 1 ) 4.271 4.380 4.490 v note 2 mcp1xx-475 4.561 4.630 4.700 v t a = +25c ( note 1 ) 4.514 4.630 4.746 v note 2 v dd trip point tempco t tpco 100 ppm/c threshold hysteresis ? min. = 1%, max = 6%) mcp1xx-195 v hys 0.019 0.114 v t a = +25c mcp1xx-240 0.023 0.139 v mcp1xx-270 0.026 0.158 v mcp1xx-300 0.029 0.176 v mcp1xx-315 0.031 0.185 v mcp1xx-450 0.044 0.263 v mcp1xx-475 0.046 0.278 v rst low-level output voltage v ol 0 . 4vi ol = 500 a, v dd =v trip(min) rst high-level output voltage (mcp102 and mcp103 only) v oh v dd C0.6 v i oh = 1 ma; for mcp102/mcp103 only (push-pull output) internal pull-up resistor (mcp131 only) r pu 9 5k ? v dd =5.5v open-drain high voltage on output (mcp121 only) v odh 13.5 (5) vv dd =3.0v, time voltage>5.5v applied ? 100s, current into pin limited to 2 ma, 25c operation recommended ( note 5 , note 6 ) open-drain output leakage current (mcp121 only) i od 0 . 1 a dc characteristics (continued) electrical specifications: unless otherwise indicated, all limits are specified for: v dd = 1v to 5.5v, r pu = 100 k ? ( mcp121 only), t a = -40c to +125c. parameters sym. min. typ. max. units conditions note 1: trip point is 1.5% from typical value. 2: trip point is 2.5% from typical value. 3: rst output is forced low. there is a current through the internal pull-up resistor. 4: this includes the current through the internal pull-up resistor and the reset power-up timer. 5: this specification allows this device to be used in pic ? microcontroller applications that require in-circuit serial programming? (icsp?) (see device-specif ic programming specifications for vo ltage requirements). this specification does not allow a continuous high voltage to be present on the open-drain output pin (v out ). the total time that the v out pin can be above the maximum device operational voltage (5.5v) is 100s. current into the v out pin should be limited to 2 ma and it is recommended that the device operational temperature be maintained between 0c to 70c (+25c preferred). for additional information, please refer to figure 2-33 . 6: this parameter is established by characterization and not 100% tested. downloaded from: http:///
? 2004-2014 microchip technology inc. ds20001906d-page 5 mcp102/103/121/131 figure 1-1: timing diagram. ac characteristics electrical specifications: unless otherwise indicated, all limits are specified for: v dd = 1v to 5.5v, r pu =100k ? ( mcp121 only), t a = -40c to +125c. parameters sym. min. typ. max. units conditions v dd detect to rst inactive t rpu 80 120 180 ms figure 1-1 and c l =50pf v dd detect to rst active t rpd 1 3 0 sv dd ramped from v trip(max) +250mv down to v trip(min) C 250 mv, per figure 1-1 , c l =50pf ( note 1 ) rst rise time after rst active (mcp102 and mcp103 only) t rt 5 s f o r r s t 10% to 90% of final value per figure 1-1 , c l =50pf ( note 1 ) note 1: these parameters are for design guidance only and are not 100% tested. temperature characteristics electrical specifications: unless otherwise noted, all limits are specified for: v dd = 1v to 5.5v, r pu =100k ? ( mcp121 only), t a = -40c to +125c. parameters sym. min. typ. max. units conditions temperature ranges specified temperature range t a -40 +85 oc mcp1xx-195 specified temperature range t a -40 +125 oc except mcp1xx-195 maximum junction temperature t j + 1 5 0o c storage temperature range t a -65 +150 oc package thermal resistances thermal resistance, 3l-sot-23 ? ja 3 0 8 o c / w thermal resistance, 3l-sc70 ? ja 335 oc/w thermal resistance, 3l-to-92 ? ja 1 4 6 o c / w 1v 1v v trip v dd rst t rpu v oh t rt t rpd v ol downloaded from: http:///
mcp102/103/121/131 ds20001906d-page 6 ? 2004-2014 microchip technology inc. 2.0 typical performance curves note: unless otherwise indicated, all limits are specified for: v dd = 1v to 5.5v, r pu =100k ? ( mcp121 only; see figure 4-1 ), t a = -40c to +125c. figure 2-1: i dd vs. temperature (reset power-up timer inactive) ( mcp102-195 ). figure 2-2: i dd vs. temperature (reset power-up timer inactive) ( mcp131-315 ). figure 2-3: i dd vs. temperature (reset power-up timer inactive) ( mcp121-450 ). figure 2-4: i dd vs. temperature (reset power-up timer active) ( mcp102-195 ). figure 2-5: i dd vs. temperature (reset power-up timer active) ( mcp131-315 ). figure 2-6: i dd vs. temperature (reset power-up timer active) ( mcp121-450 ). note: the graphs and tables provided following this note are a statistical summary based on a limited number of samples and are provided for informational purposes only. the performance characteristics listed herein are not tested or guaranteed. in some graphs or tables, the data presented may be outside the specified operating range (e.g., outside specified power supply range) and therefore outside the warranted range. 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 -40-20 0 2040 60 80 100120 140 i dd (a) temperature (c) 1.7v 1.0v 2.1v 2.8v 4.0v 5.0v 5.5v mcp102-195 0 5 10 15 20 25 30 35 -40-20 0 2040 60 80 100120 140 i dd (a) temperature (c) 1.0v 2.9v mcp131-315 3.3v 5.5v 5.0v 4.0v 4.5v 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 -40-20 0 2040 60 80 100120 140 i dd (a) temperature (c) 3.0v 1.0v 4.6v 4.1v 5.0v 5.5v mcp121-450 4.8v 0 2 4 6 8 10 12 14 16 -40-20 0 2040 60 80 100120 140 i dd (a) temperature (c) 2.1v 2.8v 4.0v 5.0v 5.5v mcp102-195 0 10 20 30 40 50 60 70 80 -40-20 0 2040 60 80 100120 140 i dd (a) temperature (c) 3.3v 4.0v 4.5v 5.0v mcp131-315 5.5v 0 2 4 6 8 10 12 14 16 -40-20 0 2040 60 80 100120 140 i dd (a) temperature (c) 4.6v 5.0v 5.5v mcp121-450 4.8v downloaded from: http:///
? 2004-2014 microchip technology inc. ds20001906d-page 7 mcp102/103/121/131 note: unless otherwise indicated, all limits are specified for: v dd = 1v to 5.5v, r pu =100k ? ( mcp121 only; see figure 4-1 ), t a = -40c to +125c. figure 2-7: i dd vs. v dd (reset power-up timer inactive) ( mcp102-195 ). figure 2-8: i dd vs. v dd (reset power-up timer inactive) ( mcp131-315 ). figure 2-9: i dd vs. v dd (reset power-up timer inactive) ( mcp121-450 ). figure 2-10: i dd vs.v dd (reset power-up timer active) ( mcp102-195 ). figure 2-11: i dd vs.v dd (reset power-up timer active) ( mcp131-315 ). figure 2-12: i dd vs.v dd (reset power-up timer active) ( mcp121-450 ). 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 1.0 2.0 3.0 4.0 5.0 6.0 i dd (a) v dd (v) -40c +25c +85c +125c mcp102-195 0c +70c -5 0 5 10 15 20 25 30 35 1.0 2.0 3.0 4.0 5.0 6.0 i dd (a) v dd (v) mcp131-315 -40c +85c +125c 0c +70c +25c 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 2.0 3.0 4.0 5.0 6.0 i dd (a) v dd (v) mcp121-450 -40c +25c +85c +125c 0c +70c 0 2 4 6 8 10 12 14 16 1.0 2.0 3.0 4.0 5.0 6.0 i dd (a) v dd (v) 0c -40c mcp102-195 device in reset t rpu inactive +125c +85c +70c +25c 0 10 20 30 40 50 60 70 80 1.0 2.0 3.0 4.0 5.0 6.0 i dd (a) v dd (v) mcp131-315 -40c +25c +85c +125c +70c device in reset t rpu inactive 0c -2 0 2 4 6 8 10 12 14 16 1.0 2.0 3.0 4.0 5.0 6.0 i dd (a) v dd (v) mcp121-450 -40c +25c +85c +125c 0c +70c device in reset t rpu inactive downloaded from: http:///
mcp102/103/121/131 ds20001906d-page 8 ? 2004-2014 microchip technology inc. note: unless otherwise indicated, all limits are specified for: v dd = 1v to 5.5v, r pu =100k ? ( mcp121 ; see figure 4-1 ), t a = -40c to +125c. figure 2-13: v trip vs. temperature vs. hysteresis ( mcp102-195 ). figure 2-14: v trip vs. temperature vs. hysteresis ( mcp131-315 ). figure 2-15: v trip vs. temperature vs. hysteresis ( mcp121-450 ). figure 2-16: v ol vs. i ol ( mcp102-195 @ v dd =1.7v). figure 2-17: v ol vs. i ol ( mcp131-315 @ v dd =2.9v). figure 2-18: v ol vs. i ol ( mcp121-450 @ v dd =4.1v). 0.000 0.005 0.010 0.015 0.020 0.025 0.030 0.035 0.040 0.045 0.050 1.895 1.900 1.905 1.910 1.915 1.920 1.925 1.930 1.935 1.940 1.945 -60 -10 40 90 140 hyst (v) v trip (v) temperature (c) v trip , decreasing v dd v hys , hysteresis mcp102-195 v trip , increasing v dd 0.090 0.092 0.094 0.096 0.098 0.100 0.102 0.104 0.106 0.108 3.060 3.080 3.100 3.120 3.140 3.160 3.180 3.200 -60 -10 40 90 140 hyst (v) v trip (v) temperature (c) mcp131-315 v trip , decreasing v dd v trip , increasing v dd v hys , hysteresis 0.100 0.110 0.120 0.130 0.140 0.150 0.160 0.170 0.180 0.190 4.300 4.350 4.400 4.450 4.500 4.550 -60 -20 20 60 100 140 hyst (v) v trip (v) temperature (c) mcp121-450 v trip , decreasing v dd v trip , increasing v dd v hys , hysteresis -0.020 0.000 0.020 0.040 0.060 0.080 0.100 0.120 0.00 0.25 0.50 0.75 1.00 v ol (v) i ol (ma) -40c 0c +85c +125c mcp102-195v dd = 1.7v +70c +25c 0.000 0.010 0.020 0.030 0.040 0.050 0.060 0.070 0.00 0.25 0.50 0.75 1.00 v ol (v) i ol (ma) mcp131-315v dd = 2.9v -40c +25c +85c +125c +70c 0c 0.000 0.010 0.020 0.030 0.040 0.050 0.060 0.00 0.25 0.50 0.75 1.00 v ol (v) i ol (ma) mcp121-450v dd = 4.1v -40c +25c +85c +125c +70c 0c downloaded from: http:///
? 2004-2014 microchip technology inc. ds20001906d-page 9 mcp102/103/121/131 note: unless otherwise indicated, all limits are specified for: v dd = 1v to 5.5v, r pu =100k ? ( mcp121 only; see figure 4-1 ), t a = -40c to +125c. figure 2-19: v ol vs. temperature ( mcp102-195 @ v dd =1.7v). figure 2-20: v ol vs. temperature ( mcp131-315 @ v dd =2.9v). figure 2-21: v ol vs. temperature ( mcp121-450 @ v dd =4.1v). figure 2-22: v oh vs. i ol ( mcp102-195 @ v dd =2.1v). figure 2-23: t rpd vs. temperature ( mcp102-195 ). figure 2-24: t rpd vs. temperature ( mcp131-315 ). 0.000 0.020 0.040 0.060 0.080 0.100 0.120 0.140 -40 0 40 80 120 v ol (v) temperature (c) i ol = 0.00 ma mcp102-195v dd = 1.7 v i ol = 0.25 ma i ol = 0.50 ma i ol = 0.75 ma i ol = 1.00 ma 0.000 0.010 0.020 0.030 0.040 0.050 0.060 0.070 -40 0 40 80 120 v ol (v) temperature (c) mcp131-315v dd = 2.9v i ol = 0.00 ma i ol = 0.25 ma i ol = 0.50 ma i ol = 0.75 ma i ol = 1.00 ma 0.000 0.010 0.020 0.030 0.040 0.050 0.060 -40 0 40 80 120 v ol (v) temperature (c) i ol = 0.00 ma i ol = 0.25 ma i ol = 0.50 ma i ol = 0.75 ma i ol = 1.00 ma mcp121-450v dd = 4.1v 1.950 1.970 1.990 2.010 2.030 2.050 2.070 2.090 2.110 0.00 0.25 0.50 0.75 1.00 v oh (v) i ol (ma) mcp102-195v dd = 2.1v -40c +25c +85c +125c +70c 0c 0 50 100 150 200 250 300 -40 -15 10 35 60 85 110 t rpd (s) temperature (c) v dd decreasing from: v trip(max) + 0.25v to v trip(min) ? 0.25v v dd decreasing from: 5v ? 1.7v v dd decreasing from: 5v ? 0v mcp102-195 0 50 100 150 200 250 -40 -15 10 35 60 85 110 t rpd (s) temperature (c) v dd decreasing from: v trip(max) + 0.25v to v trip(min) ? 0.25v v dd decreasing from: 5v ? 2.7v v dd decreasing from: 5v ? 0v mcp131-315 downloaded from: http:///
mcp102/103/121/131 ds20001906d-page 10 ? 2004-2014 microchip technology inc. note: unless otherwise indicated, all limits are specified for: v dd = 1v to 5.5v, r pu =100k ? ( mcp121 only; see figure 4-1 ), t a = -40c to +125c. figure 2-25: t rpd vs. temperature ( mcp121-450 ). figure 2-26: t rpu vs. temperature ( mcp102-195 ). figure 2-27: t rpu vs. temperature ( mcp131-315 ). figure 2-28: t rpu vs. temperature ( mcp121-450 ). figure 2-29: t rt vs. temperature ( mcp102-195 ). figure 2-30: t rt vs. temperature ( mcp131-315 ). 0 50 100 150 200 250 -40 -15 10 35 60 85 110 t rpd (s) temperature (c) v dd decreasing from: v trip(max) + 0.25v to v trip(min) ? 0.25v v dd decreasing from: 5v ? 3.0v v dd decreasing from: 5v ? 0v mcp121-450 100 110 120 130 140 150 160 -40 -15 10 35 60 85 110 t rpu (s) temperature (c) v dd increasing from: 0v ? 2.1v v dd increasing from: 0v ? 5.5v v dd increasing from: 0v ? 2.8v v dd increasing from: 0v ? 4.0v mcp102-195 100 110 120 130 140 150 160 -40 -15 10 35 60 85 110 t rpu (s) temperature (c) v dd increasing from: 0v ? 4.5v v dd increasing from: 0v ? 5.5v v dd increasing from: 0v ? 3.3v v dd increasing from: 0v ? 4.0v mcp131-315 110 115 120 125 130 135 140 145 -40 -15 10 35 60 85 110 t rpu (s) temperature (c) v dd increasing from: 0v ? 4.8v v dd increasing from: 0v ? 5.0v v dd increasing from: 0v ? 5.5v mcp121-450 0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 -40 -15 10 35 60 85 110 t rt (s) temperature (c) v dd increasing from: 0v ? 2.1v v dd increasing from: 0v ? 5.5v v dd increasing from: 0v ? 2.8v mcp102-195 v dd increasing from: 0v ? 4.0v v dd increasing from: 0v ? 5.0v 25 27 29 31 33 35 37 39 41 43 45 -40 -15 10 35 60 85 110 t rt (s) temperature (c) v dd increasing from: 0v ? 5.0v v dd increasing from: 0v ? 4.0v v dd increasing from: 0v ? 5.5v v dd increasing from: 0v ? 3.3v v dd increasing from: 0v ? 4.5v mcp131-315 downloaded from: http:///
? 2004-2014 microchip technology inc. ds20001906d-page 11 mcp102/103/121/131 note: unless otherwise indicated, all limits are specified for: v dd = 1v to 5.5v, r pu =100k ? ( mcp121 only; see figure 4-1 ), t a = -40c to +125c. figure 2-31: t rt vs. temperature ( mcp121-450 ). figure 2-32: transient duration vs. v trip (min) ? v dd . figure 2-33: open-drain leakage current vs. voltage applied to v out pin ( mcp121-195 ). 35 35.5 36 36.5 37 37.5 38 -40 -15 10 35 60 85 110 t rt (s) temperature (c) v dd increasing from: 0v ? 5.0v v dd increasing from: 0v ? 5.5v v dd increasing from: 0v ? 4.6v v dd increasing from: 0v ? 4.8v mcp121-450 0 200 400 600 800 1000 1200 1400 0.001 0.01 0.1 1 10 transient duration (s) v trip (min) ? v dd mcp121-450 mcp102-195 mcp131-315 1.00e-13 1.00e-12 1.00e-11 1.00e-10 1.00e-09 1.00e-08 1.00e-07 1.00e-06 1.00e-05 1.00e-04 1.00e-03 1.00e-02 01234567891011121314 open-drain leakage (a) pull-up voltage (v) +125c +25c -40c 10m 100 1m 10 1 10n 100n 1n 100p 1p 10p 100f downloaded from: http:///
mcp102/103/121/131 ds20001906d-page 12 ? 2004-2014 microchip technology inc. 3.0 pin description the descriptions of the pins are listed in tab l e 3 - 1 . table 3-1: pin function table pin no. symbol function mcp102 mcp121 mcp131 mcp103 12 r s t output state v dd falling: h=v dd >v trip l=v dd v trip +v hys l=v dd ? 2004-2014 microchip technology inc. ds20001906d-page 13 mcp102/103/121/131 4.0 application information for many of todays microcontroller applications, care must be taken to prevent low-power conditions that can cause many different system problems. the most common causes are brown-out conditions, where the system supply drops below the operating level momentarily. the second most common cause is when a slowly decaying power supply causes the microcontroller to begin executing instructions without sufficient voltage to sustain volatile memory (ram), thus producing indeterminate results. figure 4-1 shows a typical application circuit. mcp102/103/121/131 are voltage supervisor devices designed to keep a microcontroller in reset until the system voltage has reached and stabilized at the proper level for reliable system operation. these devices also operate as protection from brown-out conditions. figure 4-1: typical application circuit. 4.1 rst operation the rst output pin operation determines how the device can be used and indicates when the system should be forced into reset. to accomplish this, an internal voltage reference is used to set the voltage trip point (v trip ). additionally, there is a hysteresis on this trip point. when the falling edge of v dd crosses this voltage threshold, the reset power-down timer (t rpd ) starts. when this delay timer times out, the rst pin is forced low. when the rising edge of v dd crosses this voltage threshold, the reset power-up timer (t rpu ) starts. when this delay timer times out, the rst pin is forced high, t rpu is active and there is additional system current. the actual voltage trip point (v tripac ) will be between the minimum trip point (v tripmin ) and the maximum trip point (v tripmax ). the hysteresis on this trip point and the delay timer (t rpu ) are to remove any jitter that would occur on the rst pin when the device v dd is at the trip point. figure 4-2 shows the waveform of the rst pin as determined by the v dd voltage, while table 4-1 shows the state of the rst pin. the v trip specification is for falling v dd voltages. when the v dd voltage is rising, the rst will not be driven high until v dd is at v trip +v hys . once v dd has crossed the voltage trip point, there is also a minimal delay time (t rpd ) before the rst pin is driven low. figure 4-2: rst operation as determined by the v trip and v hys . v dd v dd mclr (reset input) (active-low) v ss pic ? microcontroller r pu note 1: resistor r pu may be required with the mcp121 due to the open-drain output. resistor r pu may not be required with the mcp131 due to the internal pull-up resistor. the mcp102 and mcp103 do not require the external pull-up resistor. 0.1 f mcp1xx v dd rst v ss table 4-1: rst pin states device state of rst pin when: output driver v dd v trip + v hys mcp102 l h push-pull mcp103 l h push-pull mcp121 lh (1) open-drain ( 1 ) mcp131 lh (2) open-drain ( 2 ) note 1: requires external pull-up resistor 2: has internal pull-up resistor v dd v tripmax v tripmin v tripac v tripac v tripac +v hysac rst 1v < 1v is outside the device specifications t rpd t rpu t rpd t rpu downloaded from: http:///
mcp102/103/121/131 ds20001906d-page 14 ? 2004-2014 microchip technology inc. 4.2 negative going v dd transients the minimum pulse width (time) required to cause a reset may be an important criterion in the implementation of a power-on reset (por) circuit. this time is referred to as transient duration, defined as the amount of time needed for these supervisory devices to respond to a drop in v dd . the transient duration time is dependent on the magnitude of v trip C v dd . generally speaking, the transient duration decreases with increases in v trip Cv dd . figure 4-3 shows a typical transient duration versus reset comparator overdrive, for which the mcp102/103/121/131 will not generate a reset pulse. it shows that the farther below the trip point of the transient pulse goes, the shorter the duration of the pulse required to cause a reset gets. figure 2-32 shows the transient response characteristics for the mcp102/103/121/131. a 0.1 f bypass capacitor, mounted as close as possible to the v dd pin, provides additional transient immunity (refer to figure 4-1 ). figure 4-3: example of typical transient duration waveform. 4.3 reset power-up timer (t rpu ) figure 4-4 illustrates the devices current states. while the system is powering down, the device has a low current. this current is dependent on the device v dd and trip point. when the device v dd rises through the voltage trip point (v trip ), an internal timer starts. this timer consumes additional current until the rst pin is driven (or released) high. this time is known as the reset power-up time (t rpu ). figure 4-4 shows when t rpu is active (device consuming additional current). figure 4-4: reset power-up timer waveform. 4.3.1 effect of temperature on reset power-up timer (t rpu ) the reset power-up timer time-out period (t rpu ) determines how long the device remains in the reset condition. this is affected by both v dd and temperature. typical responses for different v dd values and temperatures are shown in figures 2-26 , 2-27 and 2-28 . time (s) 0v supply voltage 5v v trip(min) -v dd t trans v trip(max) v trip(min) v trip v dd rst t rpu reset power-up timer inactive reset power-up timer inactive reset power-up timer active see figures 2-1 , 2-2 and 2-3 see figures 2-4 , 2-5 and 2-6 see figures 2-1 , 2-2 and 2-3 downloaded from: http:///
? 2004-2014 microchip technology inc. ds20001906d-page 15 mcp102/103/121/131 4.4 usage in pic ? microcontroller, icsp? applications (mcp121 only) figure 4-5 shows the typical application circuit for using the mcp121 for voltage supervision function when the pic microcontroller will be programmed via the icsp feature. additional information is available in tb087, ?using voltage supervisors with pic ? microcontroller systems which implement in-circuit serial programming?? , ds91087. figure 4-5: typical application circuit for pic ? microcontroller with the icsp? feature. note: it is recommended that the current into the rst pin be current limited by a 1 k ? resistor. v dd /v pp v dd mclr (reset input) (active-low) v ss pic ? mcu r pu 0.1 f 1k ? mcp121 v dd rst v ss downloaded from: http:///
mcp102/103/121/131 ds20001906d-page 16 ? 2004-2014 microchip technology inc. 5.0 packaging information 5.1 package marking information 3-lead to-92 example legend: xx...x customer-specific information y year code (last digit of calendar year) ww week code (week of january 1 is week 01) nnn alphanumeric traceability code pb-free jedec designator for matte tin (sn) * this package is pb-free. the pb-free jedec designator ( ) can be found on the outer packaging for this package. note : in the event the full microchip part number cannot be marked on one line, it will be carried over to the next line, thus limiting the number of available characters for customer-specific information. 3 e 3 e 3-lead sot-23 part number mcp1xx = mcp102 mcp103 mcp121 mcp131 mcp1xx t-195i/tt jgnn tgnn lgnn kgnn mcp1xx t-240ett jhnn thnn lhnn khnn mcp1xx t-270e/tt jjnn tjnn ljnn kjnn mcp1xx t-300e/tt jknn tknn lknn kknn mcp1xx t-315e/tt jlnn tlnn llnn klnn mcp1xx t-450e/tt jmnn tmnn lmnn kmnn mcp1xx t-475e/tt jpnn tpnn lpnn kpnn example ywwnnn xxxxxx xxxxxx xxxxxx mcp102 195i to^^ 345256 3 e 3-lead sc70 part number mcp1xx = mcp102 mcp103 mcp121 mcp131 mcp1xx t-195i/lb bgnn fgnn dgnn cgnn mcp1xx t-240e/lb bhnn fhnn dhnn chnn mcp1xx t-270e/lb bjnn fjnn djnn cjnn mcp1xx t-300e/lb bknn fknn dknn cknn mcp1xx t-315e/lb blnn flnn dlnn clnn mcp1xx t-450e/lb bmnn fmnn dmnn cmnn mcp1xx t-475e/lb bpnn fpnn dpnn cpnn example downloaded from: http:///
? 2004-2014 microchip technology inc. ds20001906d-page 17 mcp102/103/121/131

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? 2004-2014 microchip technology inc. ds20001906d-page 19 mcp102/103/121/131

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mcp102/103/121/131 ds20001906d-page 20 ? 2004-2014 microchip technology inc. note: for the most current package drawings, please see the microchip packaging specification located at http://www.microchip.com/packaging downloaded from: http:///
? 2004-2014 microchip technology inc. ds20001906d-page 21 mcp102/103/121/131

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mcp102/103/121/131 ds20001906d-page 22 ? 2004-2014 microchip technology inc. 5.2 product tape and reel specifications figure 5-1: embossed carrier dimensio ns (8, 12, 16 and 24 mm tape only) figure 5-2: 3-lead sot-23/sc70 d evice tape and reel specifications figure 5-3: to-92 device tape and reel specifications table 5-1: carrier tape/cavity dimensions case outline package type carrier dimensions cavity dimensions output quantity units reel diameter in mm w mm p mm a0 mm b0 mm k0 mm tt sot-23 3l 8 4 3.15 2.77 1.22 3000 180 lb sc70 3l 8 4 2.4 2.4 1.19 3000 180 to p cover tap e k 0 p w b 0 a 0 standard reel component orientation device marking pin 1 user direction of feed w p device marking p seal tap e back tap e mark face user direction of feed w mark face mark face note: bent leads are for tape and reel only. downloaded from: http:///
? 2004-2014 microchip technology inc. ds20001906d-page 23 mcp102/103/121/131 appendix a: revision history revision d (february 2014) the following is the list of modifications: 1. updated ta b l e 3 - 1 . 2. updated figure 2-25 . 3. updated sc70, sot-23 and to-92 package drawings and markings in section 5.0 ?packaging information? . revision c (january 2013) added a note to each package outline drawing. revision b (march 2005) the following is the list of modifications: 1. added section 4.4 ?usage in pic? microcontroller, icsp? applications (mcp121 only)? on using the mcp121 in pic microcontroller icsp applications. 2. added v odh specifications in section 1.0 ?electrical characteristics? (for icsp applications). 3. added figure 2-23 . 4. updated sc70 package markings and added pb-free marking information to section 5.0 ?packaging information? . 5. added appendix a: ?revision history? . revision a (august 2004) original release of this document. downloaded from: http:///
mcp102/103/121/131 ds20001906d-page 24 ? 2004-2014 microchip technology inc. notes: downloaded from: http:///
? 2004-2014 microchip technology inc. ds20001906d-page 25 mcp102/103/121/131 product identification system to order or obtain information, e. g., on pricing or delivery, refer to the factory or the listed sales office . device: mcp102: micropower voltage supervisor, push-pull mcp102t: micropower voltage supervisor, push-pull (tape and reel) mcp103: micropower voltage supervisor, push-pull mcp103t: micropower voltage supervisor, push-pull (tape and reel) mcp121 micropower voltage supervisor, open-drain mcp121t: micropower voltage supervisor, open-drain (tape and reel) mcp131 micropower voltage supervisor, open-drain mcp131t: micropower voltage supervisor, open-drain (tape and reel) monitoring options: 195 = 1.90v 240 = 2.32v 270 = 2.63v 300 = 2.93v 315 = 3.08v 450 = 4.38v 475 = 4.63v temperature range: i = -40c to +85c (mcp1xx(t)-195 only) e = -40c to +125c (except for mcp1xx(t)-195) package: tt = sot-23, 3-lead lb = sc70, 3-lead to = to-92, 3-lead part no. xxx x temperature monitoring options device examples: a) mcp102t-195i/tt: tape and reel, 1.95v micropower voltage supervisor, push-pull, -40c to +85c, sot-23 package b) mcp102-300e/to: 3.00v micropower voltage supervisor, push-pull, -40c to +125c, to-92 package a) mcp103t-270e/tt: tape and reel, 2.70v micropower voltage supervisor, push-pull, -40c to +125c, sot-23 package b) mcp103t-475e/lb: tape and reel, 4.75v micropower voltage supervisor, push-pull, -40c to +125c, sc70 package a) mcp121t-315e/lb: tape and reel, 3.15v micropower voltage supervisor, open-drain, -40c to +125c, sc70 package b) mcp121-300e/to: 3.00v micropower voltage supervisor, open-drain, -40c to +125c, to-92 package a) mcp131t-195i/tt: tape and reel, 1.95v micropower voltage supervisor, open-drain, -40c to +85c, sot-23 package b) mcp131-300e/to: 3.00v micropower voltage supervisor, open-drain, -40c to +125c, to-92 package range xx package x tape/reel option ? / downloaded from: http:///
mcp102/103/121/131 ds20001906d-page 26 ? 2004-2014 microchip technology inc. notes: downloaded from: http:///
? 2004-2014 microchip technology inc. ds20001906d-page 27 information contained in this publication regarding device applications and the like is provided only for your convenience and may be superseded by updates. it is your responsibility to ensure that your application meets with your specifications. microchip makes no representations or warranties of any kind whether express or implied, written or oral, statutory or otherwise, related to the information, including but not limited to its condition, quality, performance, merchantability or fitness for purpose . microchip disclaims all liability arising from this information and its use. use of microchip devices in life support and/or safety applications is entirely at the buyers risk, and the buyer agrees to defend, indemnify and hold harmless microchip from any and all damages, claims, suits, or expenses resulting from such use. no licenses are conveyed, implicitly or otherwise, under any microchip intellectual property rights. trademarks the microchip name and logo, the microchip logo, dspic, flashflex, k ee l oq , k ee l oq logo, mplab, pic, picmicro, picstart, pic 32 logo, rfpic, sst, sst logo, superflash and uni/o are registered trademarks of microchip technology incorporated in the u.s.a. and other countries. filterlab, hampshire, hi-tech c, linear active thermistor, mtp, seeval and the embedded control solutions company are registered trademarks of microchip technology incorporated in the u.s.a. silicon storage technology is a registered trademark of microchip technology inc. in other countries. analog-for-the-digital age, app lication maestro, bodycom, chipkit, chipkit logo, codeguard, dspicdem, dspicdem.net, dspicworks, dsspeak, ecan, economonitor, fansense, hi-tide, in-circuit serial programming, icsp, mindi, miwi, mpasm, mpf, mplab certified logo, mplib, mplink, mtouch, omniscient code generation, picc, picc-18, picdem, picdem.net, pickit, pictail, real ice, rflab, select mode, sqi, serial quad i/o, total endurance, tsharc, uniwindriver, wiperlock, zena and z-scale are trademarks of microchip technology incorporated in the u.s.a. and other countries. sqtp is a service mark of microchip technology incorporated in the u.s.a. gestic and ulpp are registered trademarks of microchip technology germany ii gmbh & co. kg, a subsidiary of microchip technology inc., in other countries. all other trademarks mentioned herein are property of their respective companies. ? 2004-2014, microchip technology incorporated, printed in the u.s.a., all rights reserved. printed on recycled paper. isbn: 978-1-62077-945-3 note the following details of the code protection feature on microchip devices: microchip products meet the specification cont ained in their particular microchip data sheet. microchip believes that its family of products is one of the most secure families of its kind on the market today, when used i n the intended manner and under normal conditions. there are dishonest and possibly illegal methods used to breach the code protection feature. all of these methods, to our knowledge, require using the microchip products in a manner outside the operating specif ications contained in microchips data sheets. most likely, the person doing so is engaged in theft of intellectual property. microchip is willing to work with the customer who is concerned about the integrity of their code. neither microchip nor any other semiconduc tor manufacturer can guarantee the security of their code. code protection does not mean that we are guaranteeing the product as unbreakable. code protection is constantly evolving. we at microchip are co mmitted to continuously improvin g the code protection features of our products. attempts to break microchips code protection feature may be a violation of the digital millennium copyright act. if such acts allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that act. microchip received iso/ts-16949:2009 certification for its worldwide headquarters, design and wafer fabrication facilities in chandler and tempe, arizona; gresham, oregon and design centers in california and india. the company?s quality system processes and procedures are for its pic ? mcus and dspic ? dscs, k ee l oq ? code hopping devices, serial eeproms, microperipherals, nonvolatile memory an d analog products. in addition, microchip?s quality system for the design and manufacture of development systems is iso 9001:2000 certified. quality management s ystem certified by dnv == iso/ts 16949 == downloaded from: http:///
ds20001906d-page 28 ? 2004-2013 microchip technology inc. americas corporate office 2355 west chandler blvd. chandler, az 85224-6199 tel: 480-792-7200 fax: 480-792-7277 technical support: http://www.microchip.com/ support web address: www.microchip.com atlanta duluth, ga tel: 678-957-9614 fax: 678-957-1455 austin, tx tel: 512-257-3370 boston westborough, ma tel: 774-760-0087 fax: 774-760-0088 chicago itasca, il tel: 630-285-0071 fax: 630-285-0075 cleveland independence, oh tel: 216-447-0464 fax: 216-447-0643 dallas addison, tx tel: 972-818-7423 fax: 972-818-2924 detroit novi, mi tel: 248-848-4000 houston, tx tel: 281-894-5983 indianapolis noblesville, in tel: 317-773-8323 fax: 317-773-5453 los angeles mission viejo, ca tel: 949-462-9523 fax: 949-462-9608 new york, ny tel: 631-435-6000 san jose, ca tel: 408-735-9110 canada - toronto tel: 905-673-0699 fax: 905-673-6509 asia/pacific asia pacific office suites 3707-14, 37th floor tower 6, the gateway harbour city, kowloon hong kong tel: 852-2401-1200 fax: 852-2401-3431 australia - sydney tel: 61-2-9868-6733 fax: 61-2-9868-6755 china - beijing tel: 86-10-8569-7000 fax: 86-10-8528-2104 china - chengdu tel: 86-28-8665-5511 fax: 86-28-8665-7889 china - chongqing tel: 86-23-8980-9588 fax: 86-23-8980-9500 china - hangzhou tel: 86-571-2819-3187 fax: 86-571-2819-3189 china - hong kong sar tel: 852-2943-5100 fax: 852-2401-3431 china - nanjing tel: 86-25-8473-2460 fax: 86-25-8473-2470 china - qingdao tel: 86-532-8502-7355 fax: 86-532-8502-7205 china - shanghai tel: 86-21-5407-5533 fax: 86-21-5407-5066 china - shenyang tel: 86-24-2334-2829 fax: 86-24-2334-2393 china - shenzhen tel: 86-755-8864-2200 fax: 86-755-8203-1760 china - wuhan tel: 86-27-5980-5300 fax: 86-27-5980-5118 china - xian tel: 86-29-8833-7252 fax: 86-29-8833-7256 china - xiamen tel: 86-592-2388138 fax: 86-592-2388130 china - zhuhai tel: 86-756-3210040 fax: 86-756-3210049 asia/pacific india - bangalore tel: 91-80-3090-4444 fax: 91-80-3090-4123 india - new delhi tel: 91-11-4160-8631 fax: 91-11-4160-8632 india - pune tel: 91-20-3019-1500 japan - osaka tel: 81-6-6152-7160 fax: 81-6-6152-9310 japan - tokyo tel: 81-3-6880- 3770 fax: 81-3-6880-3771 korea - daegu tel: 82-53-744-4301 fax: 82-53-744-4302 korea - seoul tel: 82-2-554-7200 fax: 82-2-558-5932 or 82-2-558-5934 malaysia - kuala lumpur tel: 60-3-6201-9857 fax: 60-3-6201-9859 malaysia - penang tel: 60-4-227-8870 fax: 60-4-227-4068 philippines - manila tel: 63-2-634-9065 fax: 63-2-634-9069 singapore tel: 65-6334-8870 fax: 65-6334-8850 taiwan - hsin chu tel: 886-3-5778-366 fax: 886-3-5770-955 taiwan - kaohsiung tel: 886-7-213-7830 taiwan - taipei tel: 886-2-2508-8600 fax: 886-2-2508-0102 thailand - bangkok tel: 66-2-694-1351 fax: 66-2-694-1350 europe austria - wels tel: 43-7242-2244-39 fax: 43-7242-2244-393 denmark - copenhagen tel: 45-4450-2828 fax: 45-4485-2829 france - paris tel: 33-1-69-53-63-20 fax: 33-1-69-30-90-79 germany - dusseldorf tel: 49-2129-3766400 germany - munich tel: 49-89-627-144-0 fax: 49-89-627-144-44 germany - pforzheim tel: 49-7231-424750 italy - milan tel: 39-0331-742611 fax: 39-0331-466781 italy - venice tel: 39-049-7625286 netherlands - drunen tel: 31-416-690399 fax: 31-416-690340 poland - warsaw tel: 48-22-3325737 spain - madrid tel: 34-91-708-08-90 fax: 34-91-708-08-91 sweden - stockholm tel: 46-8-5090-4654 uk - wokingham tel: 44-118-921-5800 fax: 44-118-921-5820 worldwide sales and service 10/28/13 downloaded from: http:///

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