TCM811 | DigiCamel IC Datasheet

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TCM811_07 MICROCHIP | Alldatasheet

Document overview

Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
PDF pages: 16

Technical content

Features

Precision VDD Monitor for 2.0V, 2.8V, 3.0V, 3.3V, 5.0V Nominal Supplies
Manual Reset Input
140 ms Minimum RESET Output Duration
RESET Output Valid to VDD = 1.0V (TCM811)
Low 6 µA (typ.) Supply Current
VDD Transient Immunity
Small 4-Pin SOT-143 Package
No External Components
Replacement for MAX811/812 and Offers a Lower Threshold Voltage Option
Push-Pull RESET Output
Temperature Range: - Commercial (C) -40°C to +85°C

Applications

Computers
Embedded Systems
Battery Powered Equipment
Critical Microcontroller Power Supply Monitoring Typical Application Circuit General Description The TCM811 and TCM812 are cost effective system supervisory circuits designed to monitor V DD in digital systems and provide a reset signal to the host controller when necessary. A manual reset input is provided to override the reset monitor and is suitable for use as a push-button reset. No external components are required. The reset output is driven active within 20 µs (5 µs for F version) of VDD falling through the reset voltage threshold. RESET is maintained active for a minimum of 140 ms after VDD rises above the reset threshold. The TCM812 has an active high RESET output while the TCM811 has an active low RESET output. The output of the TCM811 is valid down to VDD = 1V. Both devices are available in a 4-Pin SOT-143 package, specified with a temperature range of -40°C to +85°C. The TCM811/TCM812 are optimized to reject fast transient glitches on the VDD line. A low supply current of 6 µA (VDD = 3.3V) makes these devices ideal for battery powered applications. Package Types: TCM811 VDD VDD VDD RESET RESET INPUT (Active Low) GND GND MR PUSH BUTTON PIC Microcontroller 0.1µF VDD TCM811 RESET GND TCM811 TCM812 TCM812 (RESET) MR or SOT-143 4-Pin Reset Monitors

© 2007 Microchip Technology Inc. 1.0 ELECTRICAL CHARACTERISTICS ABSOLUTE MAXIMUM RATINGS* *Notice: Stresses beyond those listed under “Absolute Maximum Rat- ings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

ELECTRICAL CHARACTERISTICS

VDD = 5V for L/M versions, VDD = 3.3V for T/S versions, VDD = 3V for R version, VDD = 2.0V for F version. Unless otherwise noted, TA = –40°C to +85°C. Typical values are at TA = +25°C. (Note 1) Parameters Sym Min Typ Max Units Conditions VDD Range VDD 1.0 1.1 5.5 5.5 V TCM811 TCM812 Supply Current ICC µA TCM81_L/M, VDD = 5.5V, IOUT = 0 4.75 µA TCM81_R/S/T/F, VDD = 3.6V, IOUT = 0 Reset Threshold VTH 4.54 4.50 4.63 4.72 4.75 V V TCM81_L: TA = +25°C TA = –40°C to +85°C 4.30 4.25 4.38 4.46 4.50 V V TCM81_M: TA = +25°C TA = –40°C to +85°C 3.03 3.00 3.08 3.14 3.15 V V TCM81_T: TA = +25°C TA = –40°C to +85°C 2.88 2.85 2.93 2.98 3.00 V V TCM81_S: TA = +25°C TA = –40°C to +85°C 2.58 2.55 2.63 2.68 2.70 V V TCM81_R: TA = +25°C TA = –40°C to +85°C 1.71 1.70 1.75 1.79 1.80 V V TCM81_F: TA = +25°C TA = –40°C to +85°C Reset Threshold Tempco ppm/° C VDD to Reset Delay µs VDD = VTH to VTH –125 mV; TCM81_L/M µs VDD = VTH to VTH –125 mV; TCM81_R/S/T/F Reset Active Timeout Period tRP 140 280 560 ms VDD = VTH(MAX) MR Minimum Pulse Width tMR µs MR Glitch Immunity 100 ns MR to Reset Propagation Delay tMD 0.5 µs Note 1: Production testing done at TA = +25°C and +85°C, overtemperature limits are tested with periodic QA tests in production.

0.7 VDD

V VDD > VTH(MAX), TCM81_R/S/T/F VIL 0.8 V VDD > VTH(MAX), TCM81_L/M

0.25 VDD

V VDD > VTH(MAX), TCM81_R/S/T/F MR Pull-up Resistance kΩ RESET Output Voltage Low (TCM811) VOL 0.3 V TCM811R/S/T only; ISINK = 1.2 mA, VDD = VTH(MIN) 0.4 V TCM811F only; ISINK = 500 µA, VDD = VTH(MIN) 0.3 V TCM811L/M only; ISINK = 3.2 mA, VDD = VTH(MIN) ISINK = 3.2 mA, VDD = VTH(MIN) RESET Output Voltage High (TCM811) VOH

0.8 VDD

V TCM811R/S/T/F only; ISOURCE = 500 µA, VDD > VTH(MAX) VDD - 1.5 V TCM811L/M only; ISOURCE = 800 µA, VDD > VTH(MAX) RESET Output Voltage Low (TCM812) VOL 0.2 V TCM812F only, ISINK = 500 µA, VDD = VTH(MAX) 0.3 V TCM812R/S/T only, ISINK = 1.2 mA, VDD = VTH(MAX) 0.4 V TCM812L/M only, ISINK = 1.2 mA, VDD = VTH(MAX) RESET Output Voltage High (TCM812) VOH V ISOURCE = 150 µA, VDD ≤ VTH(MIN) VDD = 5V for L/M versions, VDD = 3.3V for T/S versions, VDD = 3V for R version, VDD = 2.0V for F version. Unless otherwise noted, TA = –40°C to +85°C. Typical values are at TA = +25°C. (Note 1) Parameters Sym Min Typ Max Units Conditions Note 1: Production testing done at TA = +25°C and +85°C, overtemperature limits are tested with periodic QA tests in production.

© 2007 Microchip Technology Inc. DS21615C-page 5 TCM811/TCM812 FIGURE 2-7: Normalized Reset Threshold vs. Temperature. 1.0010 1.0020 1.0030 1.0000 0.9990 0.9980 0.9970 0.9960 0.9950 0.9940 TEMPERATURE (˚C) –40 –15 NORMALIZED THRESHOLD (V)

© 2007 Microchip Technology Inc. 3.0 PIN DESCRIPTIONS The descriptions of the pins are listed in Table 3-1. TABLE 3-1: PIN FUNCTION TABLE 3.1 Ground Terminal (GND) GND provides the negative reference for the analog input voltage. Typically, the circuit ground is used. 3.2 Reset Output (RESET) (TCM811) RESET output remains low while VDD is below the Reset voltage threshold (VTRIP). Once the device voltage (VDD) returns to a high level (VTRIP + VHYS), the device will remain in Reset for the Reset delay timer (TRST). After that time expires, the RESET pin will be driven to the high state. 3.3 Reset Output (RESET) (TCM812) RESET output remains high while VDD is below the Reset voltage threshold (VTRIP). Once the device voltage (VDD) returns to a high level (VTRIP + VHYS), the device will remain in Reset for the Reset delay timer (TRST). After that time expires, the RESET pin will be driven to the low state. 3.4 Manual Reset (MR) The Manual Reset (MR) input pin allows a push button switch to easily be connected to the system. When the push button is depressed, it forces a system Reset. This pin has circuitry that filters noise that may be present on the MR signal. The MR pin is active-low and has an internal pull-up resistor. 3.5 Supply Voltage (VDD) VDD can be used for power supply monitoring or a voltage level that requires monitoring. Pin No. Symbol

Description

(TCM811) RESET push-pull output remains low while VDD is below the reset voltage threshold, and for at least 140 ms (min.) after VDD rises above reset threshold RESET (TCM812) Reset push-pull output remains high while VDD is below the reset voltage threshold, and for at least 140 ms (min.) after VDD rises above reset threshold MR Manual Reset input generates a Reset when MR is below VIL VDD Supply voltage

© 2007 Microchip Technology Inc. 5.0 PACKAGING INFORMATION 5.1 Package Marking Information 5.2 Taping Form Part Number (V) TCM811 Code TCM811LERCTR 4.63 TCM811MERCTR 4.38 TCM811TERCTR 3.08 TCM811SERCTR 2.93 TCM811RERCTR 2.63 TCM811FERCTR 1.75 Part Number (V) TCM812 Code TCM812LERCTR 4.63 TCM812MERCTR 4.38 TCM812TERCTR 3.08 TCM812SERCTR 2.93 TCM812RERCTR 2.63 TCM812FERCTR 1.75 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. 1 & = part number code + reset threshold voltage (two-digit code) 3 represents year and two-month period code 4 represents production lot ID code Device Marking P, Pitch W, Width of Carrier Tape User Direction of Feed Pin 1 Standard Reel Component Orientation Reverse Reel Component Orientation Pin 1 for TR Suffix Device (Mark Right Side Up) Package Carrier Width (W) Pitch (P) Part Per Full Reel Reel Size 4-Pin SOT-143 8 mm 4 mm 3000 7 in.

© 2007 Microchip Technology Inc. DS21615C-page 9 TCM811/TCM812 4-Lead Plastic Small Outline Transistor (RC) [SOT-143] Notes: 1. § Significant Characteristic. 1. Dimensions D and E1 do not include mold flash or protrusions. Mold flash or protrusions shall not exceed 0.25 mm per side. 2. Dimensioning and tolerancing per ASME Y14.5M. BSC: Basic Dimension. Theoretically exact value shown without tolerances. REF: Reference Dimension, usually without tolerance, for information purposes only. Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging Units MILLIMETERS Dimension Limits MIN NOM MAX Number of Pins N Pitch e

1.92 BSC

0.20 BSC

A 0.80 1.22 Molded Package Thickness 0.75 0.90 1.07 Standoff § 0.01 0.15 Overall Width E 2.10 2.64 Molded Package Width 1.20 1.30 1.40 Overall Length D 2.67 2.90 3.05 Foot Length L 0.13 0.50 0.60 Footprint

0.54 REF

φ Lead Thickness c 0.08 0.20 Lead 1 Width 0.76 0.94 Leads 2, 3 & 4 Width b 0.30 0.54 D e e/2 N E A b c L φ Microchip Technology Drawing C04-031B

REVISION HISTORY

Revision C (February 2007)

Section 5.0 “Packaging Information”: Corrected SOT-143 packaging information.
Section 3.0 “Pin Descriptions”: Added pin descriptions.
Added disclaimer on package outline drawing.
Updated package outline drawing.
Section 1.0 “Electrical Characteristics”: Refor- matted Electrical Characteristics Revision B (January 2002)
Undocumented changes. Revision A (October 2001)
Original Release of this Document.

© 2007 Microchip Technology Inc. DS21615C-page 13 TCM811/TCM812 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. X XXXX Reset Package Temperature Range Device Device: TCM811: 4-Pin µP Reset Monitor (RESET low) TCM812: 4-Pin µP Reset Monitor (RESET high) Threshold Voltage: (typical) L = 4.63V M = 4.38V T = 3.08V S = 2.93V R = 2.63V F = 1.75V Temperature Range: E = -40°C to +85°C Package: RCTR Plastic Small Outline Transistor (RC) SOT-143, 4 lead, (tape and reel). Examples: TCM811LERCTR: 4.63V TCM811MERCTR: 4.38V TCM811TERCTR: 3.08V TCM811SERCTR: 2.93V TCM811RERCTR: 2.63V TCM811FERCTR: 1.75V TCM812LERCTR: 4.63V TCM812MERCTR: 4.38V TCM812TERCTR: 3.08V TCM812SERCTR: 2.93V TCM812RERCTR: 2.63V TCM812FERCTR: 1.75V X Threshold VDD

© 2007 Microchip Technology Inc. DS21615C-page 15 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 buyer’s 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, Accuron, dsPIC, KEELOQ, KEELOQ logo, microID, MPLAB, PIC, PICmicro, PICSTART, PRO MATE, PowerSmart, rfPIC, and SmartShunt are registered trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. AmpLab, FilterLab, Linear Active Thermistor, Migratable Memory, MXDEV, MXLAB, PS logo, SEEVAL, SmartSensor and The Embedded Control Solutions Company are registered trademarks of Microchip Technology Incorporated in the U.S.A. Analog-for-the-Digital Age, Application Maestro, CodeGuard, dsPICDEM, dsPICDEM.net, dsPICworks, ECAN, ECONOMONITOR, FanSense, FlexROM, fuzzyLAB, In-Circuit Serial Programming, ICSP, ICEPIC, Mindi, MiWi, MPASM, MPLAB Certified logo, MPLIB, MPLINK, PICkit, PICDEM, PICDEM.net, PICLAB, PICtail, PowerCal, PowerInfo, PowerMate, PowerTool, REAL ICE, rfLAB, rfPICDEM, Select Mode, Smart Serial, SmartTel, Total Endurance, UNI/O, WiperLock and ZENA 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. All other trademarks mentioned herein are property of their respective companies. © 2007, Microchip Technology Incorporated, Printed in the U.S.A., All Rights Reserved. Printed on recycled paper. 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. All of these methods, to our knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchip’s 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 semiconductor 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 committed to continuously improving the code protection features of our products. Attempts to break Microchip’s 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-16949:2002 certification for its worldwide headquarters, design and wafer fabrication facilities in Chandler and Tempe, Arizona, Gresham, Oregon and Mountain View, California. The Company’s quality system processes and procedures are for its PIC® MCUs and dsPIC® DSCs, KEELOQ® code hopping devices, Serial EEPROMs, microperipherals, nonvolatile memory and analog products. In addition, Microchip’s quality system for the design and manufacture of development systems is ISO 9001:2000 certified.

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Product Information

TCM811 specifications and overview.

Summary

4-Pin Reset Monitors 2007

Description

4-Pin Reset Monitors 2007

Source title TCM811_07 Datasheet(PDF) - Microchip Technology

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