MCP120/130 Microcontroller Supervisory Circuit with Open Drain Output FEATURES PACKAGES Holds microcontroller in reset until supply voltage TO-92 WITH TO-92 with reaches stable operating level F BONDOUT D Bondout Resets microcontroller during power loss Precision monitoring of 3V, 3.3V and 5V systems 7 voltage trip points available Active low RESET pin VSS RST VDD VSS Open drain output VDD RST Internal pull-up resistor (5 k ) for MCP130 MCP120 MCP130 MCP130 Holds RESET for 350 ms (typical) RESET to VCC = 1.0V Accuracy of 125 mV for 5V systems and 75 mV TO-92 with TO-92 with for 3V systems over temperature G Bondout H Bondout 45 A typical operating current Temperature range: - Industrial (I): -40C to +85C VDD VDD RST VSS DESCRIPTION VSS RST The Microchip Technology Inc. MCP120/130 is a volt- MCP120 MCP120 age supervisory device designed to keep a microcon- MCP130 troller in reset until the system voltage has reached the proper level and stabilized. It also operates as protec- SOT-23-3 150mil SOIC tion from brown-out conditions when the supply voltage drops below a safe operating level. Both devices are available with a choice of seven different trip voltages RST 1 8 NC RST and both have open drain outputs. The MCP130 has an VDD 7 2 NC VSS 3 6 NC NC internal 5 k pullup resistor. Both devices have active VDD 5 VSS 4 NC low RESET pins. The MCP120/130 will assert the RESET signal whenever the voltage on the VDD pin is MCP120 MCP120 below the trip-point voltage. MCP130 MCP130 BLOCK DIAGRAM VDD 5k internal pull-up on Comparator MCP130 + Delay Output only Circuit Driver - RESET Bandgap Reference 2001 Microchip Technology Inc. DS11184D-page 1MCP120/130 1.0 ELECTRICAL CHARACTERISTICS *Notice: Stresses above those listed under Maximum 1.1 Maximum Ratings* Ratings may cause permanent damage to the device. VDD........................................................................7.0V This is a stress rating only and functional operation of All inputs and outputs w.r.t. VSS .....-0.6V to VDD +1.0V the device at those or any other conditions above those Storage temperature ..........................-65C to +150C indicated in the operational listings of this specification Ambient temp. with power applied ..... -65C to +125C is not implied. Exposure to maximum rating conditions ESD protection on all pins ..................................... 2 kV for extended periods may affect device reliability. DC AND AC CHARACTERISTICS All parameters apply at the VDD = 1.0 - 5.5V specified temp and voltage Industrial (I): -40C to +85C ranges unless otherwise noted. Parameter Symbol Min. Typ. Max. Units Test Conditions Operating Voltage Range VDD 1.0 5.5 V VDD Value to RESET VDD 1.0 V MIN Operating Current IDD 45 60 AVDD = 5.5V (no load) VDD Trip Point MCP1X0-270 VTRIP 2.55 2.625 2.7 V MCP1X0-300 2.85 2.925 3.0 MCP1X0-315 3.0 3.075 3.15 MCP1X0-450 4.25 4.375 4.50 MCP1X0-460 4.35 4.475 4.60 MCP1X0-475 4.50 4.625 4.75 MCP1X0-485 4.60 4.725 4.85 RESET Low MCP1X0-270 VOL 0.4 V IOL = 3.2 mA, Level Output MCP1X0-300 VDD = VTRIP MIN Voltage MCP1X0-315 MCP1X0-450 0.6 IOL = 8.5 mA, MCP1X0-460 VDD = VTRIP MIN MCP1X0-475 MCP1X0-485 RESET High MCP130-xxx VOH VDD-0.7 VIOH = 50 A,VDD > VTRIP MAX Level Output (All VTRIP Voltage Points) (MCP130 Only) Pull-up Resistor (MCP130 Only) 5 k Output Leakage (MCP120 Only) 1 A Threshold Hysteresis VHYS 50 mV VDD Detect to RESET Inactive tRPU 150 350 700 ms VDD Detect to RESET tRPD 10 sVDD ramped from VTRIP MAX + 250 mV down to VTRIP - MIN 250 mV Note: Typical values are for 25C and VDD = 5.0V 2001 Microchip Technology Inc. DS11184D-page 2