MCP102/103/121/131 Micropower Voltage Supervisors Features Package Types Ultra low supply current: 1.75 A SOT23-3/SC-70 TO-92 (steady-state max.) Precision monitoring options of: 1 RST - 1.90V, 2.32V, 2.63V, 2.93V, 3.08V, 4.38V and 4.63V 3 V SS RST Resets microcontroller in a power-loss event V V SS DD RST pin (Active-low): V 2 DD - MCP121: Active-low, open-drain - MCP131: Active-low, open-drain with internal SOT23-3/SC-70 pull-up resistor - MCP102 and MCP103: Active-low, push-pull V 1 SS Reset Delay Timer (120 ms delay, typ.) Available in SOT23-3, TO-92 and SC-70 V 3 DD packages Temperature Range: RST 2 - Extended: -40C to +125C (except MCP1XX-195) - Industrial: -40C to +85C (MCP1XX-195 only) Pb-free devices Block Diagram Applications V DD Critical Microcontroller and Microprocessor (1) R Power-monitoring Applications Comparator Computers + Reset Output Intelligent Instruments Driver Delay Portable Battery-powered Equipment RST Circuit General Description Band Gap The MCP102/103/121/131 are voltage supervisor Reference devices designed to keep a microcontroller in reset until the system voltage has reached and stabilized at the proper level for reliable system operation. Table 1 V SS Note 1: MCP131 Only shows the available features for these devices. TABLE 1: DEVICE FEATURES Output Reset Package Pinout Device Comment Delay (typ) (Pin 1, 2, 3) Type Pull-up Resistor MCP102 Push-pull No 120 ms RST, V , V DD SS MCP103 Push-pull No 120 ms VSS, RST, V DD MCP121 Open-drain External 120 ms RST, V , V DD SS MCP131 Open-drain Internal (~95 k)120ms RST, V , V DD SS MCP111 Open-drain External No V , V , V See MCP111/112 Data Sheet OUT SS DD (DS21889) MCP112 Push-Pull No No V , V , V See MCP111/112 Data Sheet OUT SS DD (DS21889) 2005 Microchip Technology Inc. DS21906B-page 1 MCP102/121/131 MCP103MCP102/103/121/131 Notice: Stresses above those listed under Maximum 1.0 ELECTRICAL Ratings may cause permanent damage to the device. This is CHARACTERISTICS a stress rating only and functional operation of the device at those or any other conditions above those indicated in the operational listings of this specification is not implied. Absolute Maximum Ratings Exposure to maximum rating conditions for extended periods V . 7.0V may affect device reliability. DD Input current (V ) 10 mA DD Output current (RST) 10 mA Rated Rise Time of V 100V/s DD All inputs and outputs (except RST) w.r.t. V SS .-0.6V to (V + 1.0V) DD RST output w.r.t. V . -0.6V to 13.5V SS Storage temperature -65C to + 150C Ambient temp. with power applied . -40C to + 125C Maximum Junction temp. with power applied 150C ESD protection on all pins . 2kV DC CHARACTERISTICS Electrical Specifications: Unless otherwise indicated, all limits are specified for: V = 1V to 5.5V, R = 100 k (MCP121 only), DD PU T = -40C to +125C. A Parameters Sym Min Typ Max Units Conditions Operating Voltage Range V 1.0 5.5 V DD Specified V Value to RST low V 1.0 V I = 10 uA, V < 0.2V DD DD RST RST Operating Current MCP102, I < 1 1.75 A Reset Power-up Timer (t ) Inactive DD RPU MCP103, MCP121 20.0 A Reset Power-up Timer (t ) Active RPU MCP131 I < 1 1.75 A V > V and Reset Power-up DD DD TRIP Timer (t ) Inactive RPU 75 AV < V and Reset Power-up DD TRIP Timer (t ) Inactive (Note 3) RPU 90 A Reset Power-up Timer (t ) Active RPU (Note 4) 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 PICmicro microcontroller applications that require In-Circuit Serial Programming (ICSP) (see device-specific programming specifications for voltage requirements). This specification DOES NOT allow a continuos high voltage to be present on the open-drain output pin (V ). The total time that the OUT V pin can be above the maximum device operational voltage (5.5V) is 100s. Current into the V pin should be OUT OUT 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. DS21906B-page 2 2005 Microchip Technology Inc.