M TCM809/TCM810 3-Pin Microcontroller Reset Monitors Features General Description • Precision VDD Monitor for 2.5V, 3.0V, 3.3V, 5.0V Nominal System Voltage Supplies • 140 msec Minimum RESET Timeout Period • RESET Output to VDD = 1.0V (TCM809) • Low Supply Current, 9 µA (typ.) • VDD Transient Immunity • Small 3-Pin SC-70 and SOT-23B Packages • No External Components • Push-pull RESET output • Temperature Range: - Commercial, SC-70(E): -40°C to +85°C - Industrial, SOT-23, SC-70(V): -40°C to +125°C The TCM809 and TCM810 are cost effective system supervisor circuits designed to monitor VDD in digital systems and provide a reset signal to the host processor when necessary. No external components are required. Applications The TCM809/TCM810 are optimized to reject fast transient glitches on the VDD line. Low supply current of 9 µA (typ., V DD = 3.3V) makes these devices suitable for battery powered applications. • • • • • Computers Embedded Systems Battery Powered Equipment Critical Microcontroller Power Supply Monitoring Automotive The RESET output is typically driven active within 20 µsec (SOT-23) or 65 µsec (SC-70) of V DD falling through the reset voltage threshold. RESET is maintained active for a minimum of 140 msec after VDD rises above the reset threshold. The TCM810 has an active-high RESET output while the TCM809 has an active-low RESET output. The output of the TCM809/ TCM810 is valid down to VDD = 1V. Both devices are available in 3-Pin SOT-23B and SC-70 packages. Pin Configurations SOT-23B/SC-70 Typical Application Circuit GND 1 VDD PIC Microcontroller TCM809 RESET TCM809 or TCM810 VDD 3 VDD 2 GND 1 2002 Microchip Technology Inc. RESET INPUT (Active Low) TCM809 RESET TCM810 (RESET) 3 VDD 2 GND Note: 3-Pin SOT-23B is equivalent to JEDEC TO-236 DS21661B-page 1 TCM809/TCM810 1.0 ELECTRICAL CHARACTERISTICS PIN FUNCTION TABLE NAME ABSOLUTE MAXIMUM RATINGS* GND Supply Voltage (VDD to GND) ..........................................6.0V FUNCTION Ground RESET (TCM809) RESET push-pull output remains low while VDD is below the reset voltage threshold and for 240 msec (140 msec min.) after VDD rises above reset threshold. RESET, RESET.................................... – 0.3V to (VDD +0.3V) Input Current, V DD.........................................................20 mA Output Current, RESET, RESET...................................20 mA dV/dt (VDD)............................................................. 100V/µsec Operating Temperature Range.................... – 40°C to +125°C RESET (TCM810) RESET push-pull output remains high while VDD is below the reset voltage threshold and for 240 msec (140 msec min.) after VDD rises above reset threshold. Power Dissipation (TA = 70°C): 3-Pin SOT-23B (derate 4 mW/°C above +70°C) ......320 mW 3-Pin SC-70 (derate 2.17 mW/°C above +70°C)......174 mW Storage Temperature Range....................... – 65°C to +150°C Maximum Junction Temperature, TJ .............................. 150°C *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. Exposure to maximum rating conditions for extended periods may affect device reliability. Supply voltage (+2.5V, +3.0V, +3.3V, +5.0V) VDD ELECTRICAL CHARACTERISTICS VDD = Full Range, TA = Operating Temperature Range, unless otherwise noted. Typical values are at TA = +25°C, VDD = 5V for L/M/J, 3.3V for T/S, 3.0V for R, and 2.5V for Z (Note 1). Parameter Sym VDD Range Min Typ Max Units 1.0 1.2 — — 5.5 5.5 V TA = 0°C to +70°C TA = – 40°C to +125°C Test Conditions Supply Current (SOT-23) I CC — — 24 17 60 50 µA TCM8xxL/M: VDD < 5.5V TCM8xxR/S/T/Z: VDD < 3.6V Supply Current (SC-70) I CC — — 12 9 30 25 µA TCM8xxL/M/J: VDD < 5.5V TCM8xxR/S/T/Z: VDD < 3.6V Reset Threshold (Note 2) VTH 4.56 4.50 4.63 — 4.70 4.75 V TCM8xxL: TA = +25°C TA = – 40°C to +125°C 4.31 4.25 4.38 — 4.45 4.50 TCM8xxM: TA = +25°C TA = – 40°C to +125°C 3.93 3.89 4.00 — 4.06 4.10 TCM809J: TA = +25°C TA = – 40°C to +125°C 3.04 3.00 3.08 — 3.11 3.15 TCM8xxT: TA = +25°C TA = – 40°C to +125°C 2.89 2.85 2.93 — 2.96 3.00 TCM8xxS: TA = +25°C TA = – 40°C to +125°C 2.59 2.55 2.63 — 2.66 2.70 TCM8xxR: TA = +25°C TA = – 40°C to +125°C 2.28 2.25 2.32 — 2.35 2.38 TCM8xxZ: TA = +25°C TA = – 40°C to +125°C Reset Threshold Tempco — 30 — ppm/°C VDD to Reset Delay, SOT-23 — 20 — µsec VDD = VTH to (VTH – 100 mV) (Note 2) VDD to Reset Delay, SC-70 — 65 — µsec VDD = VTH to (VTH – 100 mV) (Note 2) Reset Active Time-out Period, SOT-23 140 240 560 msec Reset Active Time-out Period, SC-70 140 320 560 msec RESET Output Voltage Low (TCM809) VOL — — — — — — 0.3 0.4 0.3 V TCM809R/S/T/Z: VDD = VTH min, ISINK = 1.2 mA TCM809L/M/J: VDD = VTH min, ISINK = 3.2 mA VDD > 1.0V, ISINK = 50 µA RESET Output Voltage High (TCM809) VOH 0.8 VDD VDD – 1.5 — — — — V TCM809R/S/T/Z: VDD > VTH max, ISOURCE = 500 µA TCM809L/M/J: VDD > VTH max, ISOURCE = 800 µA Note 1: 2: Production testing done at TA = +25°C, over temperature limits ensured by QC screen. RESET Output for TCM809, RESET Output for TCM810. DS21661B-page 2 2002 Microchip Technology Inc. TCM809/TCM810 VDD = Full Range, TA = Operating Temperature Range, unless otherwise noted. Typical values are at TA = +25°C, VDD = 5V for L/M/J, 3.3V for T/S, 3.0V for R, and 2.5V for Z (Note 1). Parameter Sym Min Typ Max Units RESET Output Voltage Low (TCM810) VOL — — — — 0.3 0.4 V TCM810R/S/T/Z: VDD = VTH max, ISINK = 1.2 mA TCM810L/M: VDD = VTH max, ISINK = 3.2 mA RESET Output Voltage High (TCM810) VOH 0.8 VDD — — V 1.8 < VDD < VTH min, ISOURCE = 150 µA Note 1: 2: Test Conditions Production testing done at TA = +25°C, over temperature limits ensured by QC screen. RESET Output for TCM809, RESET Output for TCM810. 2002 Microchip Technology Inc. DS21661B-page 3 TCM809/TCM810 2.0 APPLICATIONS INFORMATION 2.1 VDD Transient Rejection The TCM809/TCM810 provides accurate VDD monitoring and reset timing during power-up, power-down, and brownout/sag conditions. These devices also reject negative-going transients (glitches) on the power supply line. Figure 2-1 shows the maximum transient duration vs. maximum negative excursion (overdrive) for glitch rejection. Any combination of duration and overdrive which lies under the curve will not generate a reset signal. VDD VTH Overdrive Duration Maximum Transient Duration (µsec) 400 TA = +25°C Combinations above the curve are detected as a brownout or power-down condition. Transient immunity can be improved by adding a capacitor in close proximity to the VDD pin of the TCM809/TCM810. 2.2 RESET Signal Integrity During Power-Down The TCM809 RESET output is valid to VDD = 1.0V. Below this voltage the output becomes an "open circuit" and does not sink current. This means CMOS logic inputs to the microcontroller will be floating at an undetermined voltage. Most digital systems are completely shutdown well above this voltage. However, in situations where RESET must be maintained valid to VDD = 0V, a pull-down resistor must be connected from RESET to ground to discharge stray capacitances and hold the output low (Figure 2-2). This resistor value, though not critical, should be chosen such that it does not appreciably load RESET under normal operation (100 kΩ will be suitable for most applications). Similarly, a pull-up resistor to V DD is required for the TCM810 to ensure a valid high RESET for V DD below 1.0V. 320 VDD 240 160 VDD TCM8XXL/M/J (SOT-23) 80 0 TCM809 TCM8XXZ/R/S/T (SOT-23) 1 RESET 5 100 1000 Reset Comparator Overdrive GND [V TH - VDD ] (mv) R1 100 kΩ 130 VDD to Reset Delay ( µsec) 120 110 FIGURE 2-2: The addition of R1 at the RESET output of the TCM809 ensures that the RESET output is valid to VDD = 0V. TCM8XXL/M/J (SC-70) 100 90 80 70 60 50 TCM8XXZ/R/S/T (SC-70) 40 30 1 10 100 1000 Reset Comparator Overdrive (mV) [VTH - VDD ] (mv) FIGURE 2-1: Maximum Transient Duration Overdrive for Glitch Rejection at 25°C. DS21661B-page 4 vs. 2002 Microchip Technology Inc. TCM809/TCM810 2.3 Controllers and Processors With Bidirectional I/O Pins Some microcontrollers have bi-directional 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 kΩ resistor in series with the output of the TCM809/ TCM810 (Figure 2-3). If there are other components in the system which require a reset signal, they should be buffered so as not to load the reset line. If the other components are required to follow the reset I/O of the microcontroller, the buffer should be connected as shown with the solid line. BUFFER VDD Micro controller TCM809 4.7 kΩ RESET RESET GND FIGURE 2-3: Interfacing Bidirectional RESET I/O. 2002 Microchip Technology Inc. Buffered RESET To Other System Components GND the TCM809 to a DS21661B-page 5 TCM809/TCM810 3.0 TYPICAL PERFORMANCE CHARACTERISTICS 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. 35 VDD = 5V TCM8xxZ/R/S/T, No Load 30 TCM8xxL/M/J, No Load Supply Current (µA) Supply Current (µA) 30 25 20 VDD = 3V 15 10 5 VDD = 1V 0 -40 20 VDD = 3V 15 10 VDD = 1V 5 0 -20 0 40 20 60 80 100 125 -40 -20 0 Temperature (˚C) FIGURE 3-1: SOT-23. Supply Current vs. Temperature, FIGURE 3-4: SOT-23. 60 80 100 125 Supply Current vs. Temperature, 16 TCM8xx/R/S/T/Z, No Load TCM8xx/L/M/J, No Load 16 14 VDD = 5V 14 Supply Current ( µA) Supply Current ( µA) 40 20 Temperature (˚C) 18 12 10 VDD = 3V 8 6 4 VDD = 5V 12 10 VDD = 3V 8 6 VDD = 1V 4 VDD = 1V 2 2 0 0 -40 -20 0 20 40 60 80 100 -40 120 -20 0 20 100 Supply Current vs. Temperature, VOD = VTH – VDD VOD = 10 mV TCM8xxZ/R/S/T 80 60 VOD = 20 mV 40 20 0 -40 VOD = 100 mV VOD = 200 mV -20 0 20 40 60 80 100 125 DS21661B-page 6 60 80 100 120 Reset 140 Supply Current TCM8xxL/M/J vs. Temperature, VOD = VTH – VDD 120 VOD = 10 mV 100 80 VOD = 20 mV 60 40 VOD = 100 mV 20 0 -40 VOD = 200 mV -20 0 20 40 60 80 100 125 Temperature (˚C) Temperature (˚C) FIGURE 3-3: Power-Down Temperature, SOT-23. FIGURE 3-5: SC-70. Power-Down Reset Delay (µsec) FIGURE 3-2: SC-70. 40 Temperature (°C) Temperature (°C) Power-Down Reset Delay (µsec) VDD = 5V 25 Delay vs. FIGURE 3-6: Power-Down Temperature, SOT-23. Reset Delay vs. 2002 Microchip Technology Inc. 250 1.003 Normalized Reset Threshold Power-up Reset Timeout (µsec) TCM809/TCM810 245 TCM8xxL/M/J 240 235 TCM8xxZ/R/S/T 230 225 -40 1.002 1.001 1.000 0.999 0.998 0.997 -20 40 20 0 80 60 100 -40 125 0 -20 FIGURE 3-7: Power-Up Temperature, SOT-23. Reset Time-out vs. 40 FIGURE 3-9: Normalized Temperature, SOT-23. 60 80 100 125 Reset Threshold vs. 1.001 450 SC-70 Normalized Reset Threshold 400 Power-up Reset Timeout (µsec) 20 Temperature (˚C) Temperature (˚C) 350 300 250 200 150 100 50 1 0.999 0.998 0.997 0 -40 -20 0 20 40 60 80 100 -40 120 Temperature (°C) FIGURE 3-8: Power-up Temperature, SC-70. Reset 2002 Microchip Technology Inc. -20 0 20 40 60 80 100 120 Temperature (°C) Time-out vs. FIGURE 3-10: Normalized Temperature, SC-70. Reset Threshold vs. DS21661B-page 7 TCM809/TCM810 4.0 PACKAGING INFORMATION 4.1 Package Marking Information 3-Pin SOT-23B cdef 3-Pin SC-70 c d e f g h Top Side Bottom Side Part Number J1 TCM809MENB J2 TCM809TENB J3 TCM809SENB J4 TCM809RENB J5 TCM809JENB J6 TCM809ZENB J7 TCM809LVNB/TCM809LVLB JZ TCM809MVNB/TCM809MVLB JY TCM809TVNB/TCM809TVLB JX TCM809SVNB/TCM809SVLB JV TCM809RVNB/TCM809RVLB JU TCM809JVNB/TCM809JVLB JT TCM809ZVNB/TCM809ZVLB JS (SC-70 package only) Part Number Legend: Note: DS21661B-page 8 1 2 3 4 5 6 SOT-23/SC-70 TCM809LENB SOT-23/SC-70 TCM810LENB K1 TCM810MENB K2 TCM810TENB K3 TCM810SENB K4 TCM810RENB K5 TCM810ZENB K6 TCM810LVNB/TCM810LVLB KZ TCM810MVNB/TCM810MVLB KY TCM810TVNB/TCM810TVLB KX TCM810SVNB/TCM810SVLB KV TCM810RVNB/TCM810RVLB KU TCM810ZVNB/TCM810ZVLB KT (SC-70 package only) Part Number + temperature range and voltage (two-digit code) Part Number + temperature range and voltage (two-digit code) Lot ID number Year and work week Year and work week Year and work week 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. 2002 Microchip Technology Inc. TCM809/TCM810 4.2 Taping Form Component Taping Orientation for 3-Pin SOT-23 (JEDEC TO-236) Devices User Direction of Feed Device Marking W PIN 1 P Standard Reel Component Orientation for 713 Suffix Device (Mark Right Side Up) Carrier Tape, Number of Components Per Reel and Reel Size: Package Carrier Width (W) Pitch (P) Part Per Full Reel Reel Size 8 mm 4 mm 3000 7 in. 3-Pin SOT-23B Component Taping Orientation for 3-Pin SC-70 (EIAJ) Devices User Direction of Feed Device Marking W PIN 1 P Standard Reel Component Orientation for 713 Suffix Device (Mark Right Side Up) Carrier Tape, Number of Components Per Reel and Reel Size: Package Carrier Width (W) Pitch (P) Part Per Full Reel Reel Size 8 mm 4 mm 3000 7 in. 3-Pin SC-70 2002 Microchip Technology Inc. DS21661B-page 9 TCM809/TCM810 4.3 Packaging Information 3-Pin SOT-23B .021 (0.54) .015 (0.37) .104 (2.64) .083 (2.10) .055 (1.40) .047 (1.20) .024 (0.60) .017 (0.44) .120 (3.05) .105 (2.67) .007 (0.18) .003 (0.08) 8 MAX. .040 (1.02) .031 (0.79) .004 (0.10) .001 (0.02) .010 (0.25) .005 (0.13) .081 (2.05) .070 (1.78) 3-Pin SC-70 .016 (0.40) .010 (0.25) .053 (1.35) .045 (1.15) .094 (2.40) .071 (1.80) PIN 1 .051 (1.30) REF. .087 (2.20) .071 (1.80) .039 (1.00) .031 (0.80) .007 (0.18) .004 (0.10) 10° MAX. .004 (0.10) .000 (0.00) DS21661B-page 10 .012 (0.30) .004 (0.10) 2002 Microchip Technology Inc. TCM809/TCM810 ON-LINE SUPPORT Microchip provides on-line support on the Microchip World Wide Web (WWW) site. The web site is used by Microchip as a means to make files and information easily available to customers. To view the site, the user must have access to the Internet and a web browser, such as Netscape or Microsoft Explorer. Files are also available for FTP download from our FTP site. Connecting to the Microchip Internet Web Site Systems Information and Upgrade Hot Line The Systems Information and Upgrade Line provides system users a listing of the latest versions of all of Microchip's development systems software products. Plus, this line provides information on how customers can receive any currently available upgrade kits.The Hot Line Numbers are: 1-800-755-2345 for U.S. and most of Canada, and 1-480-792-7302 for the rest of the world. 013001 The Microchip web site is available by using your favorite Internet browser to attach to: www.microchip.com The file transfer site is available by using an FTP service to connect to: ftp://ftp.microchip.com The web site and file transfer site provide a variety of services. Users may download files for the latest Development Tools, Data Sheets, Application Notes, User's Guides, Articles and Sample Programs. A variety of Microchip specific business information is also available, including listings of Microchip sales offices, distributors and factory representatives. Other data available for consideration is: • Latest Microchip Press Releases • Technical Support Section with Frequently Asked Questions • Design Tips • Device Errata • Job Postings • Microchip Consultant Program Member Listing • Links to other useful web sites related to Microchip Products • Conferences for products, Development Systems, technical information and more • Listing of seminars and events 2002 Microchip Technology Inc. DS21661B-page 11 TCM809/TCM810 READER RESPONSE It is our intention to provide you with the best documentation possible to ensure successful use of your Microchip product. If you wish to provide your comments on organization, clarity, subject matter, and ways in which our documentation can better serve you, please FAX your comments to the Technical Publications Manager at (480) 792-4150. Please list the following information, and use this outline to provide us with your comments about this Data Sheet. To: Technical Publications Manager RE: Reader Response Total Pages Sent From: Name Company Address City / State / ZIP / Country Telephone: (_______) _________ - _________ FAX: (______) _________ - _________ Application (optional): Would you like a reply? Device: TCM809/TCM810 Y N Literature Number: DS21661B Questions: 1. What are the best features of this document? 2. How does this document meet your hardware and software development needs? 3. Do you find the organization of this data sheet easy to follow? If not, why? 4. What additions to the data sheet do you think would enhance the structure and subject? 5. What deletions from the data sheet could be made without affecting the overall usefulness? 6. Is there any incorrect or misleading information (what and where)? 7. How would you improve this document? 8. How would you improve our software, systems, and silicon products? DS21661B-page 12 2002 Microchip Technology Inc. TCM809/TCM810 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 X XXXXX Device VDD Temperature Range Package Reset Threshold Device: TCM809: Supervisor circuit with active-low RESET output TCM810: Supervisor circuit with active-high RESET output VDD Reset Threshold: L M J T S R Z = = = = = = = E V = -40°C to +85°C = -40°C to +125°C Temperature Range: 4.63V 4.38V 4.00V 3.08V 2.93V 2.63V 2.32V Examples: a) troller 4.63V Reset Monitor, -40°C to +85°C, Tape and Reel. b) NB713 = SOT-23B, 3-pin (Tape and Reel) LB713 = SC-70, 3-pin (Tape and Reel) TCM809LVLB713: SC-70-3-TR, Microcontroller 4.63V Reset Monitor, -40°C to +125°C, Tape and Reel. c) TCM809LVNB713: SOT-23B-3-TR, Microcontroller 4.63V Reset Monitor, -40°C to +125°C, Tape and Reel. a) TCM810MENB713: SOT-23B-3-TR, Microcontroller 2.63V Reset Monitor, -40°C to +85°C, Tape and Reel. b) TCM810RVLB713: SOT-23B-3-TR, Microcontroller 2.63V Reset Monitor, -40°C to +125°C, Tape and Reel. TCM810TVLB713: SC-70-3-TR, Microcontroller 2.63V Reset Monitor, -40°C to +125°C, Tape and Reel. c) Package: TCM809LENB713: SOT-23B-3-TR, Microcon- Sales and Support Data Sheets Products supported by a preliminary Data Sheet may have an errata sheet describing minor operational differences and recommended workarounds. To determine if an errata sheet exists for a particular device, please contact one of the following: 1. 2. 3. Your local Microchip sales office The Microchip Corporate Literature Center U.S. FAX: (480) 792-7277 The Microchip Worldwide Site (www.microchip.com) Please specify which device, revision of silicon and Data Sheet (include Literature #) you are using. New Customer Notification System Register on our web site (www.microchip.com/cn) to receive the most current information on our products. 2002 Microchip Technology Inc. DS21661B-page13 TCM809/TCM810 NOTES: DS21661B-page 14 2002 Microchip Technology Inc. Information contained in this publication regarding device applications and the like is intended through suggestion only and may be superseded by updates. It is your responsibility to ensure that your application meets with your specifications. No representation or warranty is given and no liability is assumed by Microchip Technology Incorporated with respect to the accuracy or use of such information, or infringement of patents or other intellectual property rights arising from such use or otherwise. Use of Microchip’s products as critical components in life support systems is not authorized except with express written approval by Microchip. No licenses are conveyed, implicitly or otherwise, under any intellectual property rights. Trademarks The Microchip name and logo, the Microchip logo, FilterLab, KEELOQ, MPLAB, PIC, PICmicro, PICMASTER, PICSTART, PRO MATE, SEEVAL and The Embedded Control Solutions Company are registered trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. dsPIC, ECONOMONITOR, FanSense, FlexROM, fuzzyLAB, In-Circuit Serial Programming, ICSP, ICEPIC, microID, microPort, Migratable Memory, MPASM, MPLIB, MPLINK, MPSIM, MXDEV, PICC, PICDEM, PICDEM.net, rfPIC, Select Mode and Total Endurance are trademarks of Microchip Technology Incorporated in the U.S.A. Serialized Quick Term Programming (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. © 2002, Microchip Technology Incorporated, Printed in the U.S.A., All Rights Reserved. Printed on recycled paper. Microchip received QS-9000 quality system certification for its worldwide headquarters, design and wafer fabrication facilities in Chandler and Tempe, Arizona in July 1999. The Company’s quality system processes and procedures are QS-9000 compliant for its PICmicro ® 8-bit MCUs, KEELOQ® code hopping devices, Serial EEPROMs and microperipheral products. In addition, Microchip’s quality system for the design and manufacture of development systems is ISO 9001 certified. 2002 Microchip Technology Inc. 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