MCP101 MICROCHIP | Alldatasheet

Document overview

  • Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
  • PDF pages: 8

Technical content

 1999 Microchip Technology Inc. Preliminary DS11187D-page 1 MCP100/101

FEATURES

  • Holds microcontroller in reset until supply voltage reaches stable operating level
  • Resets microcontroller during power loss
  • Precision monitoring of 3V, 3.3V, and 5V systems
  • 7 voltage trip points available
  • Active low RESET pin (MCP100) or active high RESET (MCP101)
  • Push-pull output
  • Holds RESET /RESET for 350 ms (typical)
  • Guaranteed RESET/RESET to VDD = 1.0V
  • Accuracy of ±125mV for 5V systems and ±75mV for 3V systems over temperature
  • 45 µA typical operating current
  • Temperature range: - Industrial (I): -40°C to +85°C

DESCRIPTION

The Microchip Technology Inc. MCP100/101 is a volt- age supervisory device designed to keep a microcon- troller in reset until the system voltage has reached the proper level and stabilized. It also operates as protec- 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 and both have push-pull outputs. The MCP100 has a low active RESET pin and the MCP101 has a high active RESET pin. The MCP100/101 will assert the RESET /RESET signal whenever the voltage on the VDD pin is below the trip-point voltage. PACKAGES BLOCK DIAGRAM VSS VDD RST VSS VDD MCP100 MCP101 MCP100 MCP101 VSS VDD MCP100 MCP101 TO-92 with ‘D’ Bondout TO-92 with ‘H’ Bondout SOT -23-3 RST OR RST RST OR RST RST OR Bandgap Reference Delay Circuit Output Driver RESET VDD Comparator RESET or Microcontroller Supervisory Circuit with Push-Pull Output 11187d.book Page 1 Friday, September 10, 1999 8:52 AM

DS11187D-page 2 Preliminary  1999 Microchip Technology Inc.

1.0 ELECTRICAL CHARACTERISTICS

1.1 Maximum Ratings*

*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. DC AND AC CHARACTERISTICS All parameters apply at the specified temp and voltage ranges unless oth- erwise noted. V DD = 1.0 - 5.5V Industrial (I):-40°C to +85°C PARAMETER SYMBOL MIN TYP MAX UNITS TEST CONDITIONS Operating Voltage Range V DD 1.0 5.5 V VDD Value to Guarantee RESET/ RESET VDD MIN 1.0 V Operating current I DD 45 60 µA V DD = 5.5V (no load) VDD Trip Point MCP10X-270 MCP10X-300 MCP10X-315 MCP10X-450 MCP10X-460 MCP10X-475 MCP10X-485 V TRIP 2.55 2.85 3.0 4.25 4.35 4.50 4.60 2.625 2.925 3.075 4.375 4.475 4.625 4.725 2.7 3.0 3.15 4.50 4.60 4.75 4.85 V RESET Low Level Output Voltage (MCP100) MCP100-270 MCP100-300 MCP100-315 V OL 0.4 V I OL = 3.2mA, VDD = VTRIPMIN MCP100-450 MCP100-460 MCP100-475 MCP100-485 0.6 I OL = 8.5mA, VDD = VTRIPMIN RESET High Level Output Voltage (MCP100) MCP100-XXX (All VTRIP Points) V OH VDD -0.7 V I OH = 3mA,VDD > VTRIPMAX RESET Low Level Output Voltage (MCP101) MCP101-270 MCP101-300 MCP101-315 V OL 0.4 V I OL = 3.2mA, VDD > VTRIPMAX MCP101-450 MCP101-460 MCP101-475 MCP101-485 0.6 I OL = 8.5mA, VDD > VTRIPMAX RESET High level Output Voltage (MCP101) MCP101-XXX (All V TRIP Points) V OH VDD -0.7 V I OH = 3mA,VDD = VTRIPMIN Threshold Hysteresis V HYS 50 mV VDD Detect to RESET/RESET Inactive t RPU 150 350 700 ms VDD Detect to RESET/RESET t RPD 10 µs V DD ramped from VTRIPMAX + 250mV down to VTRIPMIN - 250mV 11187d.book Page 2 Friday, September 10, 1999 8:52 AM

 1999 Microchip Technology Inc. Preliminary DS11187D-page 3 MCP100/101 FIGURE 1-1: MCP100/101 Timing Diagram

2.0 APPLICATIONS INFORMATION

2.1 The Need for Supervisory Circuits

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 com- mon causes are brown-out conditions where the sys- tem supply drops below the operating level momentarily, and the second, is when a slowly decay- ing power supply causes the microcontroller to begin executing instructions without enough voltage to sus- tain SRAM and producing indeterminate results. FIGURE 2-1: Typical Application

2.2 Negative Going V DD Transients

Many system designers implementing POR circuits are concerned about the minimum pulse width required to cause a reset. Figure 2-2 shows typical transient dura- tion vs. reset comparator overdrive for which the MCP100/101 will not generate a reset pulse. It shows that the farther below the trip point the transient pulse goes, the duration of the pulse required to cause a reset gets shorter. A 0.1 µF bypass cap mounted as close as possible to the V DD pin provides additional transient immunity. FIGURE 2-2: Typical Transient Response VDD RESET VOH tRPU VTRIP tRPD VOL RESET (MCP100) (MCP101) VOL MICROCONTROLLER MCLR VDDVSS RST MCP100 OR RESET VSS VDD VDDbypass capacitor TIME SUPPLY VOLT AGE VTRIPMAX VTRIPMIN TRANSIENT D URATION (VTRIPMIN - VDD ) 0123 VTRIP - VDD (V) TRANSIENT DURATION ( µS) Transients above the curve will cause a reset Transients below the curve will NOT cause a reset TA = +25°C 11187d.book Page 3 Friday, September 10, 1999 8:52 AM

DS11187D-page 4 Preliminary  1999 Microchip Technology Inc.

2.3 Effect of Temperature on Timeout

Period (tRPU ) The timeout period (tRPU ) determines how long the device remains in the reset condition. This is controlled by an internal RC timer and is effected by both V DD and temperature. The graph shown in Figure 2-3 shows typical response for different V DD values and tempera- tures. FIGURE 2-3: Typica l tRPU vs. Temperature FIGURE 2-4: IDD vs. Temperature FIGURE 2-5: Normalized VTRIP vs. Temperature FIGURE 2-6: VOL vs. IOL FIGURE 2-7: Normalized IOL vs. Temperature -40 -20 20 60 TEMPERATURE (°C) 600 500 400 300 200 100 TIMEOUT PERIOD (T RPU ) (MS) 80 10004 0 700 VDD = 5V VDD = 4V VDD = 3V VDD = 6V -40 -20 20 60 TEMPERATURE (°C) Operating Current (µA) 80 10004 0 VDD = 5V VDD = 3V VDD = 5.5V VDD = 4V -40 -20 20 60 TEMPERATURE (°C) 1.000 0.998 0.996 0.994 0.992

0.997 NORMALIZED THRESHOLD* (V TRIP)

1.002 * Multiply value at 25°C by this factor to determine the value at temperature 02 6 1 0 500 400 300 200 100 VOL (mV) 1248 600 700 800 14 16 18 20 VDD = 3.5V VDD = 1.5V VDD = 4.5V VDD = 2.5V TA = +25°C IOL (mA) -40 -20 20 60 TEMPERATURE (°C) 1.2 1.1 1.00 0.9 0.8 0.7 NORMALIZED I OL * 80 10004 0 1.3 * Multiply value at 25°C by this factor to determine the value at temperature 11187d.book Page 4 Friday, September 10, 1999 8:52 AM

DS11187D-page 6 Preliminary  1999 Microchip Technology Inc. NOTES: 11187d.book Page 6 Friday, September 10, 1999 8:52 AM

 1999 Microchip Technology Inc. Preliminary DS11187D-page 7 MCP100/101 MCP100/101 PRODUCT IDENTIFICATION SYSTEM Sales and Support Package: TO = TO-92 (3-lead) [offered in bags only] TT = SOT -23 (3-lead) [offered in tape & reel only] Temperature I= –40°C to +85°C (only offered in I)Range Bondout Option (TO-92 only) D = D Bond Option (see bond option chart below) H = H Bond Option RESET /RESET VTRIP Voltage 270 = 2.55 ≤ VTRIP ≤ 2.70 300 = 2.85 ≤ VTRIP ≤ 3.00 315 = 3.00 ≤ VTRIP ≤ 3.15 450 = 4.25 ≤ VTRIP ≤ 4.50 460 = 4.35 ≤ VTRIP ≤ 4.60 475 = 4.50 ≤ VTRIP ≤ 4.75 485 = 4.60 ≤ VTRIP ≤ 4.85 Device: MCP100 = Supervisor circuit with active low RESET output MCP100T = Supervisor circuit with active low RESET output (tape & reel) MCP101 = Supervisor circuit with active high RESET output MCP101T = Supervisor circuit with active high RESET output (tape & reel) MCP100/101—xxx b I /pp VSSVDD RST VDD MCP100-xxxH I/TO MCP101-xxxH I/TO MCP100-xxxD I/TO MCP101-xxxD I/TO MCP100-xxx I/TT MCP101-xxx I/TT TO-92 with ‘D’ Bondout TO-92 with ‘H’ Bondout SOT -23-3 Product Identification Options for MCP100/101 Example of Product Identification: For the MCP100 (active low RESET pin) with VTRIP range of 2.55V - 2.70V in T0-92 package with ‘H’ bond option in industrial temp range, the part number would be: MCP100-270H I/TO. VDD OR RST RST OR RST RST OR RST VSS VSS Data Sheets Products supported by a preliminary Data Sheet may have an errata sheet describing minor operational differences and recom- mended workarounds. To determine if an errata sheet exists for a particular device, please contact one of the following: 1. Your local Microchip sales office 2. The Microchip Corporate Literature Center U.S. FAX: (480) 786-7277. 3. 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. 11187d.book Page 7 Friday, September 10, 1999 8:52 AM

Information contained in this publication regarding device applications and the like is intended for suggestion only and may be superseded by updates. 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. The Microchip DS11187D-page 8  1999 Microchip Technology Inc. All rights reserved. © 1999 Microchip Technology Incorporated. Printed in the USA. 9/99 Printed on recycled paper. AMERICAS Corporate Office Microchip T echnology Inc. 2355 West Chandler Blvd. Chandler, AZ 85224-6199 Tel: 602-786-7200 Fax: 602-786-7277 Technical Support: 602-786-7627 Web Address: http://www.microchip.com After September 1, 1999: Tel: 480-786-7200 Fax: 480-786-7277 Technical Support: 480-786-7627 Atlanta Microchip T echnology Inc.

500 Sugar Mill Road, Suite 200B

Atlanta, GA 30350 Tel: 770-640-0034 Fax: 770-640-0307 Boston Microchip T echnology Inc.

5 Mount Royal Avenue

Marlborough, MA 01752 Tel: 508-480-9990 Fax: 508-480-8575 Chicago Microchip T echnology Inc.

333 Pierce Road, Suite 180

Itasca, IL 60143 Tel: 630-285-0071 Fax: 630-285-0075 Dallas Microchip T echnology Inc.

4570 Westgrove Drive, Suite 160

Addison, TX 75248 Tel: 972-818-7423 Fax: 972-818-2924 Dayton Microchip T echnology Inc. Two Prestige Place, Suite 150 Miamisburg, OH 45342 Tel: 937-291-1654 Fax: 937-291-9175 Detroit Microchip T echnology Inc. Tri-Atria Office Building

32255 Northwestern Highway, Suite 190

Farmington Hills, MI 48334 Tel: 248-538-2250 Fax: 248-538-2260 Los Angeles Microchip T echnology Inc.

18201 Von Karman, Suite 1090

Irvine, CA 92612 Tel: 949-263-1888 Fax: 949-263-1338 New York Microchip T echnology Inc.

150 Motor Parkway, Suite 202

Hauppauge, NY 11788 Tel: 516-273-5305 Fax: 516-273-5335 San Jose Microchip T echnology Inc.

2107 North First Street, Suite 590

San Jose, CA 95131 Tel: 408-436-7950 Fax: 408-436-7955 AMERICAS (continued) Toronto Microchip T echnology Inc.

5925 Airport Road, Suite 200

Mississauga, Ontario L4V 1W1, Canada Tel: 905-405-6279 Fax: 905-405-6253 ASIA/PACIFIC Hong Kong Microchip Asia Pacific Unit 2101, T ower 2 Metroplaza

223 Hing Fong Road

Kwai Fong, N.T ., Hong Kong Tel: 852-2-401-1200 Fax: 852-2-401-3431 Beijing Microchip Technology, Beijing Unit 915, 6 Chaoyangmen Bei Dajie Dong Erhuan Road, Dongcheng District New China Hong Kong Manhattan Building Beijing 100027 PRC Tel: 86-10-85282100 Fax: 86-10-85282104 India Microchip T echnology Inc. India Liaison Office No. 6, Legacy, Convent Road Bangalore 560 025, India Tel: 91-80-229-0061 Fax: 91-80-229-0062 Japan Microchip T echnology Intl. Inc. Benex S-1 6F 3-18-20, Shinyokohama Kohoku-Ku, Y okohama-shi Kanagawa 222-0033 Japan Tel: 81-45-471- 6166 Fax: 81-45-471-6122 Korea Microchip Technology Korea 168-1, Y oungbo Bldg. 3 Floor Samsung-Dong, Kangnam-Ku Seoul, Korea Tel: 82-2-554-7200 Fax: 82-2-558-5934 Shanghai Microchip Technology RM 406 Shanghai Golden Bridge Bldg.

2077 Y an’an Road West, Hong Qiao District

Shanghai, PRC 200335 Tel: 86-21-6275-5700 Fax: 86 21-6275-5060 ASIA/PACIFIC (continued) Singapore Microchip Technology Singapore Pte Ltd.

200 Middle Road

#07-02 Prime Centre Singapore 188980 T el: 65-334-8870 Fax: 65-334-8850 Taiwan, R.O.C Microchip Technology Taiwan 10F-1C 207 T ung Hua North Road T aipei, T aiwan, ROC Tel: 886-2-2717-7175 Fax: 886-2-2545-0139 EUROPE United Kingdom Arizona Microchip T echnology Ltd.

505 Eskdale Road

Berkshire, England RG41 5TU T el: 44 118 921 5858 Fax: 44-118 921-5835 Denmark Microchip Technology Denmark ApS Regus Business Centre Lautrup hoj 1-3 Ballerup DK-2750 Denmark T el: 45 4420 9895 Fax: 45 4420 9910 France Arizona Microchip T echnology SARL Parc d’Activite du Moulin de Massy

43 Rue du Saule T rapu

91300 Massy, France

Arizona Microchip T echnology GmbH Gustav-Heinemann-Ring 125 D-81739 München, Germany T el: 49-89-627-144 0 Fax: 49-89-627-144-44 Italy Arizona Microchip T echnology SRL Centro Direzionale Colleoni Palazzo Taurus 1 V . Le Colleoni 1

20041 Agrate Brianza

Milan, Italy Tel: 39-39-65791-1 Fax: 39-39-6899883 08/11/99 W ORLDWIDE SALES AND SERVICE Microchip received ISO 9001 Quality System certification for its worldwide headquarters, design, and wafer fabrication facilities in January 1997. Our field-pro- grammable PICmicro® 8-bit MCUs, KEE LOQ ® code hopping devices, Serial EEPROMs, related specialty memory prod- ucts and development systems conform to the stringent quality standards of the Inter- national Standard Organization (ISO). 11187d.book Page 8 Friday, September 10, 1999 8:52 AM