MCP131X/2X Voltage Supervisor Features: Package Types SOT-23-5 • Low Supply Current: 1 µA (Typical),10 µA (Max.) • Precision Monitoring Trip Point Options: - 2.9V and 4.6V (Standard Offerings) - 2.0V to 4.7V in 100 mV Increments, (Contact the local Microchip Sales Office) • Resets Microcontroller in a Power-loss Event • Reset Delay Time-Out Option: - 1.4 ms, 30 ms, 200 ms, or 1.6s (Typical) • Watchdog Timer Input Time-Out Options: - 6.3 ms, 102 ms, 1.6s, or 25.
MCP131X/2X NOTES: DS21985D-page 2 2005-2012 Microchip Technology Inc.
MCP131X/2X 1.0 ELECTRICAL CHARACTERISTICS Absolute Maximum Ratings† Supply Voltage (VDD to VSS) . . . . . . . . . . . . . . . . . . . . . . 7.0V † 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 indicated in the operational listings of this specification is not implied.
MCP131X/2X DC CHARACTERISTICS (CONTINUED) Electrical Specifications: Unless otherwise indicated, all limits are specified for VDD = 1V to 5.5V, RPU = 100 k (only MCP1320, MCP1321 and MCP1322), TA = -40°C to +125°C. Parameters VDD Trip Point Note 1: 2: 3: 4: 5: 6: Sym Min Typ Max Units VTRIP 1.970 2.00 2.030 V TA = +25°C (Note 1) (Note 6) 1.950 2.00 2.050 V TA = -40°C to +85°C (Note 2) MCP13XX-21 2.069 2.10 2.132 V TA = +25°C (Note 1) (Note 6) 2.048 2.10 2.
MCP131X/2X DC CHARACTERISTICS (CONTINUED) Electrical Specifications: Unless otherwise indicated, all limits are specified for VDD = 1V to 5.5V, RPU = 100 k (only MCP1320, MCP1321 and MCP1322), TA = -40°C to +125°C. Parameters VDD Trip Point (Con’t) Sym Min Typ Max Units VTRIP 3.349 3.40 3.451 V TA = +25°C (Note 1) (Note 6) 3.315 3.40 3.385 V TA = -40°C to +125°C (Note 2) MCP13XX-35 3.448 3.50 3.553 V TA = +25°C (Note 1) (Note 6) 3.413 3.50 3.
MCP131X/2X DC CHARACTERISTICS (CONTINUED) Electrical Specifications: Unless otherwise indicated, all limits are specified for VDD = 1V to 5.5V, RPU = 100 k (only MCP1320, MCP1321 and MCP1322), TA = -40°C to +125°C. Parameters Threshold Hysteresis Note 3) MCP13XX-20 Sym Min Typ Max Units VHYS 0.020 — 0.
MCP131X/2X DC CHARACTERISTICS (CONTINUED) Electrical Specifications: Unless otherwise indicated, all limits are specified for VDD = 1V to 5.5V, RPU = 100 k (only MCP1320, MCP1321 and MCP1322), TA = -40°C to +125°C. Parameters Threshold Hysteresis MCP13XX-34 (Continued) Note 3) (Note 6) MCP13XX-35 Sym Min Typ Max Units VHYS 0.034 — 0.
MCP131X/2X DC CHARACTERISTICS (CONTINUED) Electrical Specifications: Unless otherwise indicated, all limits are specified for VDD = 1V to 5.5V, RPU = 100 k (only MCP1320, MCP1321 and MCP1322), TA = -40°C to +125°C. Parameters RST/RST Low-Level Output Voltage RST/RST High-Level Output Voltage Sym Min Typ Max Units Conditions VOL — — 0.3 V IOL = 50 µA, 1.0V VDD 1.5V — — 0.3 V IOL = 100 µA, 1.5V VDD 2.5V — — 0.3 V IOL = 2 mA, 2.5V VDD 4.5V — — 0.3 V IOL = 4 mA, VDD 4.
MCP131X/2X VTRIPMAX VTRIPAC + VHYS VTRIPMIN VDD tRST 1V tRR tRST tRPD VTRIP RST RST VDD < 1V is outside the device operating specification. The RST (or RST) output state is unknown while VDD < 1V. FIGURE 1-1: TABLE 1-1: Device Voltage and Reset Pin Waveforms. DEVICE VOLTAGE AND RESET PIN TIMINGS Electrical Specifications: Unless otherwise indicated, all limits are specified for VDD = 1V to 5.5V, RPU = 100 k (only MCP1320, MCP1321, and MCP1322), TA = -40°C to +125°C.
MCP131X/2X tMR MR tRST tNF tMRD RST RST FIGURE 1-2: TABLE 1-2: MR and Reset Pin Waveforms. MR AND RESET PIN TIMINGS Electrical Specifications: Unless otherwise indicated, all limits are specified for VDD = 1V to 5.5V, RPU = 100 k (only MCP1320, MCP1321, and MCP1322), TA = -40°C to +125°C. Parameters Sym Min Typ Max Units Conditions MR Pulse Width tMR 1 — — µs MR Active to RST/RST Active tMRD — 235 — ns VDD = 5.0V tNF — 150 — ns VDD = 5.
MCP131X/2X TEMPERATURE CHARACTERISTICS Electrical Specifications: Unless otherwise noted, all limits are specified for VDD = 1V to 5.5V, RPU = 100 k (only MCP1316), TA = -40°C to +125°C.
MCP131X/2X NOTES: DS21985D-page 12 2005-2012 Microchip Technology Inc.
MCP131X/2X 2.0 TYPICAL PERFORMANCE CURVES 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.
MCP131X/2X Note: Unless otherwise indicated, all limits are specified for VDD = 1V to 5.5V, RPU = 100 k (only MCP1316; see Figure 4-1), TA = -40°C to +125°C. 4.8V 5.0V 5.5V 7 6 IDD (µA) 5 4 3 2 1 0 -100 -50 0 50 100 150 Temperature (°C) FIGURE 2-7: IDD vs. Temperature (Watchdog Timer Active) (MCP1318M-4.6). MCP1319 does not have a Watchdog Timer FIGURE 2-8: IDD vs. Temperature (Watchdog Timer Active) (MCP1319-2.9). 2.2V 2.5V 4.0V 4.5V 5.0V 5.
MCP131X/2X Note: Unless otherwise indicated, all limits are specified for VDD = 1V to 5.5V, RPU = 100 k (only MCP1316; see Figure 4-1), TA = -40°C to +125°C. -45°C 1.2 1 -45°C 0.4 IDD (µA) IDD (µA) +25°C +90°C +130°C 5 +90°C 0.8 0.6 +25°C 6 +130°C 4 3 2 0.2 1 0 0 0.0 2.0 4.0 6.0 4.6 4.8 5.0 VDD (V) 5.2 5.4 5.6 VDD (V) FIGURE 2-10: IDD vs. VDD (Reset Powerup Timer Inactive and Watchdog Timer Inactive) (MCP1318M-4.6). FIGURE 2-13: IDD vs.
MCP131X/2X Note: Unless otherwise indicated, all limits are specified for VDD = 1V to 5.5V, RPU = 100 k (only MCP1316; see Figure 4-1), TA = -40°C to +125°C. VTRIP Up VHYST 4.700 4.650 VTRIP Down 4.600 4.550 -50 0 50 100 1V 2V 3V 4.3V 0.1 0.08 0.06 0.02 0 0.00 2.00 4.00 6.00 IOL (mA) FIGURE 2-19: (MCP1318M-4.6). VOL vs. IOL 0.16 3.4 0.14 3.3 2.960 3.3 2.940 3.2 3.2 2.920 VTRIP Down 2.900 2.880 0 50 100 2.7V 0.02 0 0.00 150 2.00 Temperature (°C) FIGURE 2-20: (MCP1319-2.9).
MCP131X/2X Note: Unless otherwise indicated, all limits are specified for VDD = 1V to 5.5V, RPU = 100 k (only MCP1316; see Figure 4-1), TA = -40°C to +125°C. 0.12 4 mA 01 0.1 A 3 mA VOH (V) VOLL (V) 0.14 0.08 2 mA 0.06 0.04 1 mA 0.02 0 mA 0 -50 0 50 100 5 4.5 4 3.5 3 2.5 2 1.5 1 0.5 0 0.00 4.5V 4.3V 3V 2V 1.5V 2.00 150 FIGURE 2-22: VOL vs. Temperature (MCP1318M-4.6 @ VDD = 4.5V). 4.00 6.00 IOH (mA) FIGURE 2-25: VOH vs. IOH (MCP1318M-4.6 @ +25°C). 6 0.25 5.5V 5V 4.
MCP131X/2X Note: Unless otherwise indicated, all limits are specified for VDD = 1V to 5.5V, RPU = 100 k (only MCP1316; see Figure 4-1), TA = -40°C to +125°C. 4.8 V 300 5V 250 5.5V 220 150 100 215 210 205 200 50 195 -50 0 50 100 190 -100 150 -50 Temperature (°C) FIGURE 2-28: (MCP1318M-4.6). FIGURE 2-31: (MCP1318M-4.6). tRPD vs. Temperature 4V 4.5V 5V -50 0 50 3.2 V 5.5V 100 150 250 245 240 235 230 225 220 215 210 205 200 -100 2.5V 4.5V 5V FIGURE 2-32: (MCP1319-2.9).
MCP131X/2X Note: Unless otherwise indicated, all limits are specified for VDD = 1V to 5.5V, RPU = 100 k (only MCP1316; see Figure 4-1), TA = -40°C to +125°C. VRST=2.9V 3.2 V VRST=4.6V 350 3000 300 2500 250 tMRD (ns) Transient Duration (µs) VRST=2.0V 3500 2000 1500 2.0V 1000 2.9V 4.5 V 5V 5.5 V 200 150 100 500 50 0 0.001 0.01 0.1 1 0 -100 10 -50 Reset Threshold Overdrive (V) VTRIPMin - VDD FIGURE 2-34: Transient Duration vs. VTRIP (min) – VDD. 2.2 V 2.5 V 4V 4.5 V 5V 5.
MCP131X/2X 1000 900 800 700 600 500 400 300 200 100 0 -100 Normalized Reset Timeout Period tRPD (µs) Note: Unless otherwise indicated, all limits are specified for VDD = 1V to 5.5V, RPU = 100 k (only MCP1316; see Figure 4-1), TA = -40°C to +125°C. 5V to 4.5V 5V to 0V -50 0 50 100 0.145 0.14 0.135 0.13 0.125 0.12 0.115 -100 150 MCP1318M-4.6 -50 Temperature (°C) tRPD (µs) Normalized Reset Timeout Period 250 5V to 2.7V VTRIP Typ + 0.3V to VTRIP Min - 0.
MCP131X/2X Note: Unless otherwise indicated, all limits are specified for VDD = 1V to 5.5V, RPU = 100 k (only MCP1316; see Figure 4-1), TA = -40°C to +125°C. VRST=2.0V 1.15 1.1 MCP1318M-4.6 1.05 1 ` 0.95 0.9 -100 VRST=2.9V VRST=4.6V 0.1 1 600 1.2 Transient Duration (µS) Normalized Watchdog Timeout Period 1.25 -50 0 50 100 150 500 400 300 200 100 0 0.001 0.01 10 Reset Threshold Overdrive (V) VTRIPMin - VDD Temperature (°C) FIGURE 2-45: Normalized Watchdog TimeOut Period vs.
MCP131X/2X NOTES: DS21985D-page 22 2005-2012 Microchip Technology Inc.
MCP131X/2X 3.0 PIN DESCRIPTION The descriptions of the pins are listed in Table 3-1. TABLE 3-1: PIN FUNCTION TABLE Pin No. Device Symbol Pin Type MCP1316M (1), MCP1318M (1), MCP1319M (1), MCP1320, MCP1321, MCP1322 RST O SOT23-5 1 Buffer/ Driver Type Function Open-Drain Reset Output (active-low) Goes active (Low) if one of these conditions occurs: 1. If VDD falls below the selected Reset voltage threshold. 2. If the MR pin is forced low. 3.
MCP131X/2X TABLE 3-1: PIN FUNCTION TABLE (CONTINUED) Pin No. Symbol Pin Type Buffer/ Driver Type MCP1316, MCP1316M, MCP1317, MCP1320 MR I ST MCP1318, MCP1318M, MCP1319, MCP1319M, MCP1321, MCP1322 RST O Push-Pull Device SOT23-5 3 Function Manual Reset input for a Reset switch. This input allows a push button switch to be directly connected to the MCP131X/2X MR pin, which can then be used to force a system Reset. This input filters (ignores) noise pulses that occur on the MR pin.
MCP131X/2X 3.1 Ground Terminal (VSS) VSS provides the negative reference for the analog input voltage. Typically, the circuit ground is used. 3.2 Supply Voltage (VDD) VDD can be used for power supply monitoring or a voltage level that requires monitoring. 3.3 Reset Output (RST and RST) There are four types of Reset output pins. These are: 1. 2. 3. 4.
MCP131X/2X NOTES: DS21985D-page 26 2005-2012 Microchip Technology Inc.
MCP131X/2X 4.0 OPERATIONAL DESCRIPTION For many of today’s 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.
MCP131X/2X 4.0.1 DEVICE SPECIFIC BLOCK DIAGRAMS VDD VDD Comparator Comparator + + – MR Reference Voltage Output Driver RST – RST Reference Voltage Output Driver RST Noise Filter VSS WDI Watchdog FIGURE 4-3: MCP1316 Block Diagram. VSS WDI Watchdog FIGURE 4-6: VDD VDD Comparator Comparator + + – MR MCP1318 Block Diagram. Reference Voltage Output Driver RST – RST Reference Voltage Output Driver RST Noise Filter VSS WDI Watchdog FIGURE 4-4: MCP1316M Block Diagram.
MCP131X/2X VDD VDD Comparator Comparator + RST – MR + Reference Voltage Output Driver – RST Reference Voltage Output Driver RST RST Noise Filter VSS FIGURE 4-8: MCP1319 Block Diagram. VSS WDI Watchdog FIGURE 4-11: VDD VDD Comparator Comparator + MR + RST – Reference Voltage Output Driver – RST MR Noise Filter Reference Voltage MCP1319M Block Diagram. Output Driver RST RST Noise Filter VSS FIGURE 4-9: MCP1321 Block Diagram.
MCP131X/2X 4.1 Reset Voltage Trip Point (VTRIP) Operation The device’s Reset voltage trip point (VTRIP) is selected when the device is ordered. As the voltage on the device’s VDD pin is above or below this selected trip point, the output of the Reset pin (RST/RST) will be forced to either the inactive or active state. For the voltage trip point, there is a minimum trip voltage (VTRIPMIN) and a maximum trip voltage (VTRIPMAX). The voltage that the device “actually” trips at will be referred to as VTRIP.
MCP131X/2X 4.1.1 POWER-UP/RISING VDD As the device VDD rises, the device’s Reset circuit will remain active until the voltage rises above the “actual” trip point (VTRIP) plus the hysteresis (VHYS). Figure 4-13 shows a power-up sequence and the waveform of the RST and RST pins. As the device powers up, the voltage will start below the valid operating voltage of the device. At this voltage, the Reset output value is not valid.
MCP131X/2X Reset Delay Timer (tRST) The Reset delay timer ensures that the MCP131X/2X device will “hold” the embedded system in Reset until the system voltage has stabilized. There are several time-out options to better meet the requirements of different applications. These Reset delay timer timeouts are shown in Table 4-2. The Standard offering time-out is typically 200 ms. The Reset delay timer (tRST) starts after the device voltage rises above the “actual” trip point (VTRIP) plus the hysteresis (VHYS).
MCP131X/2X 4.3 Negative Going VDD Transients 4.4 Manual Reset Input The minimum pulse width (time) required to cause a Reset may be an important criteria in the implementation of a Power-on Reset (POR) circuit. This time is referred to as transient duration. The MCP131X/2X devices are designed to reject a level of negative-going transients (glitches) on the power supply line. The Manual Reset input pin (MR) allows the Reset pins (RST/RST) to be manually forced to their active states.
MCP131X/2X 4.5 Watchdog Timer The purpose of the Watchdog Timer (WDT) is to increase system reliability. The Watchdog Timer feature can be used to detect when the Host Controller’s program flow is not as expected. The Watchdog Timer monitors for activity on the Watchdog Input pin (WDI). The WDI pin is expected to be strobed within a given time frame. When this time frame is exceeded, without an edge transition on the WDI pin, the Reset pin is driven active to reset the system.
MCP131X/2X 5.0 APPLICATION INFORMATION Using in PIC® Microcontroller, ICSP™ Applications 5.3 This section shows application-related information that may be useful for your particular design requirements. Note: 5.1 This operation can only be done using the device with the Open-Drain RST pin (MCP1320, MCP1321, and MCP1322). Devices that have the internal pull-up resistor are not recommended due to the current path of the internal pull-up resistor.
MCP131X/2X 5.4 Modifying The Trip Point, VTRIP Although the MCP131X/2X device has a fixed voltage trip point (VTRIP), it is sometimes necessary to make custom adjustments. This can be accomplished by connecting an external resistor divider to the MCP131X/2X VDD pin. This causes the VSOURCE voltage to be at a higher voltage than when the MCP131X/2X input equals its VTRIP voltage (Figure 5-5). 5.
MCP131X/2X 5.7 Controllers and Processors With Bidirectional I/O Pins Some microcontrollers have bidirectional Reset pins. Depending on the current drive capability of the controller pin, an indeterminate logic level may result if there is a logic conflict. This can be avoided by adding a 4.7 k resistor in series with the output of the MCP131X/2X (Figure 5-7). If there are other components in the system that require a Reset signal, they should be buffered so as not to load the Reset line.
MCP131X/2X NOTES: DS21985D-page 38 2005-2012 Microchip Technology Inc.
MCP131X/2X 6.0 STANDARD DEVICE OFFERINGS 6.1 Custom Configurations Table 6-2 shows the codes that specify the desired Reset time out (tRST) and Watchdog Timer time-out (tWDT) for custom devices. Table 6-1 shows the standard devices that are available and their respective configuration. The configuration includes: The voltage trip point (VTRIP) is specified by the two digits of the desired typical trip point voltage. As an example, if the desired VTRIP selection has a typical VTRIP of 2.
MCP131X/2X NOTES: DS21985D-page 40 2005-2012 Microchip Technology Inc.
MCP131X/2X 7.0 DEVELOPMENT TOOLS 7.1 Evaluation/Demonstration Boards The SOT-23-5/6 Evaluation Board (VSUPEV2) can be used to evaluate the characteristics of the MCP131X/2X devices. This blank PCB has footprints for: • • • • Pull-up Resistor Pull-down Resistor Loading Capacitor In-line Resistor There is also a power supply filtering capacitor. For evaluating the MCP131X/2X devices, the selected device should be installed into the Option A footprint.
MCP131X/2X NOTES: DS21985D-page 42 2005-2012 Microchip Technology Inc.
MCP131X/2X 8.0 PACKAGING INFORMATION 8.1 Package Marking Information 5-Pin SOT-23 Example: Part Number MCP1316T-29LE/OT Legend: XX...
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MCP131X/2X Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging 2005-2012 Microchip Technology Inc.
MCP131X/2X 8.2 Product Tape and Reel Specifications FIGURE 8-1: EMBOSSED CARRIER DIMENSIONS (8 MM TAPE ONLY) Top Cover Tape A0 W B0 K0 P TABLE 8-1: CARRIER TAPE/CAVITY DIMENSIONS Case Outline OT Carrier Dimensions Package Type SOT-23 FIGURE 8-2: 3L Cavity Dimensions W mm P mm A0 mm B0 mm K0 mm 8 4 3.23 3.17 1.
MCP131X/2X APPENDIX A: REVISION HISTORY Revision D (August 2012) The following is the list of modifications: 1. Updated Figure 2-22 and Figure 2-23. Revision C (February 2012) The following is the list of modifications: 1. 2. 3. 4. Updated package temperature in the Temperature Characteristics table. Corrected text in Section 4.0, Operational Description. Updated package specification in Section 8.0, Packaging Information to show all drawings available. Other minor typographical corrections.
MCP131X/2X NOTES: DS21985D-page 48 2005-2012 Microchip Technology Inc.
MCP131X/2X PRODUCT IDENTIFICATION SYSTEM To order or obtain information, e.g., on pricing or delivery, refer to the factory or the listed sales office. PART NO.
MCP131X/2X NOTES: DS21985D-page 50 2005-2012 Microchip Technology Inc.
Note the following details of the code protection feature on Microchip devices: • Microchip products meet the specification contained 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 in the intended manner and under normal conditions. • There are dishonest and possibly illegal methods used to breach the code protection feature.
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