U6813B-MFP

U6813B-MFP Datasheet

The function of microcontrollers in safety-critical applications e.g., anti-lock systems needs to be monitored permanently. Usually, this task is accomplished by an independent watchdog timer. The monolithic IC U6813B, designed in bipolar technology and qualified according to the needs of the automotive industry, includes such a watchdog timer and provides additional features for added value. With the help of integrated driver stages, it is easy to control safety-related functions of a relay and of an N-channel power MOSFET in high-side applications. In case of a microcontroller malfunction or supply-voltage anomalies, the U6813B provides positive and negative reset and enable output signals. This flexibility guarantees a broad range of applications. The U6813B is based on of Atmel’s fail-safe ICs U6808B and U6809B.

Part	Datasheet
U6813B-MFP	U6813B-MFP (pdf)

Related Parts	Information
U6813B-MFPG3	U6813B-MFPG3

PDF Datasheet Preview
• Digital Self-supervising Watchdog with Hysteresis • One 150-mA Output Driver for Relay • One High-side Driver for N-channel Power FET • Positive and Negative Enable Output • Positive and Negative Reset Output • Over/Under-voltage Detection • Relay and Power FET Outputs Protected Against Standard Transients and 55-V Load Dump The function of microcontrollers in safety-critical applications e.g., anti-lock systems needs to be monitored permanently. Usually, this task is accomplished by an independent watchdog timer. The monolithic IC U6813B, designed in bipolar technology and qualified according to the needs of the automotive industry, includes such a watchdog timer and provides additional features for added value. With the help of integrated driver stages, it is easy to control safety-related functions of a relay and of an N-channel power MOSFET in high-side applications. In case of a microcontroller malfunction or supply-voltage anomalies, the U6813B provides positive and negative reset and enable output signals. This flexibility guarantees a broad range of applications. The U6813B is based on of Atmel’s fail-safe ICs U6808B and U6809B. Figure Block Diagram Fail-safe IC with High-side and Relay Driver U6813B VCC 14 3.3-V under- and overvoltage detect. Bandgap reference Reset debounce fosc Power-on reset Reset delay fosc RELI 13 FETI 12 WDI 11 5-V under- and overvoltage detect. 19k Watchdog 15 SGND 2 GND Internal oscillator fosc RCoscillator supervisor RC oscillator 10 WDC VCC 3 P-RES 4 N-RES Current limitation VCC FET output 8 CAPI 1 RELO 6 N-EN 5 P-EN 9 FETO 7 VS Pin Configuration Figure Pinning SO16 RELO 1 GND 2 P-RES 3 N-RES 4 P-EN 5 N-EN 6 CAPI 8 16 3.3V 15 SGND 14 VCC 13 RELI 12 FETI 11 WDI 10 WDC Ordering Information Extended Type Number U6813B-MFPG3 Package SO16 Remarks Taped and reeled Package Information Package SO16 Dimensions in mm technical drawings according to DIN specifications 14 U6813B Atmel Headquarters Corporate Headquarters 2325 Orchard Parkway San Jose, CA 95131 TEL 1 408 441-0311 FAX 1 408 487-2600 Europe Atmel Sarl Route des Arsenaux 41 Case Postale 80 CH-1705 Fribourg Switzerland TEL 41 26-426-5555 FAX 41 26-426-5500 Asia Room 1219 Chinachem Golden Plaza 77 Mody Road Tsimhatsui East Kowloon Hong Kong TEL 852 2721-9778 FAX 852 2722-1369 Japan 9F, Tonetsu Shinkawa Bldg. 1-24-8 Shinkawa Chuo-ku, Tokyo 104-0033 Japan TEL 81 3-3523-3551 FAX 81 3-3523-7581 Atmel Operations Memory 2325 Orchard Parkway San Jose, CA 95131 TEL 1 408 441-0311 FAX 1 408 436-4314 Microcontrollers 2325 Orchard Parkway San Jose, CA 95131 TEL 1 408 441-0311 FAX 1 408 436-4314 La Chantrerie BP 70602 44306 Nantes Cedex 3, France TEL 33 2-40-18-18-18 FAX 33 2-40-18-19-60 ASIC/ASSP/Smart Cards Zone Industrielle 13106 Rousset Cedex, France TEL 33 4-42-53-60-00 FAX 33 4-42-53-60-01 1150 East Cheyenne Mtn. Blvd. Colorado Springs, CO 80906 TEL 1 719 576-3300 FAX 1 719 540-1759 Scottish Enterprise Technology Park Maxwell Building East Kilbride G75 0QR, Scotland TEL 44 1355-803-000 FAX 44 1355-242-743 RF/Automotive Theresienstrasse 2 Postfach 3535 74025 Heilbronn, Germany TEL 49 71-31-67-0 FAX 49 71-31-67-2340 1150 East Cheyenne Mtn. Blvd. Colorado Springs, CO 80906 TEL 1 719 576-3300 FAX 1 719 540-1759 Biometrics/Imaging/Hi-Rel MPU/ High Speed Converters/RF Datacom Avenue de Rochepleine BP 123 38521 Saint-Egreve Cedex, France TEL 33 4-76-58-30-00 FAX 33 4-76-58-34-80 e-mail Web Site Atmel Corporation Atmel Corporation makes no warranty for the use of its products, other than those expressly contained in the Company’s standard warranty which is detailed in Atmel’s Terms and Conditions located on the Company’s web site. The Company assumes no responsibility for any errors which may appear in this document, reserves the right to change devices or specifications detailed herein at any time without notice, and does not make any commitment to update the information contained herein. No licenses to patents or other intellectual property of Atmel are granted by the Company in connection with the sale of Atmel products, expressly or by implication. Atmel’s products are not authorized for use as critical components in life support devices or systems. is the registered trademark of Atmel. Other terms and product names may be the trademarks of others. Printed on recycled paper.

PDF Datasheet Preview

• Digital Self-supervising Watchdog with Hysteresis
• One 150-mA Output Driver for Relay
• One High-side Driver for N-channel Power FET
• Positive and Negative Enable Output
• Positive and Negative Reset Output
• Over/Under-voltage Detection
• Relay and Power FET Outputs Protected Against Standard Transients and 55-V Load

Dump

The function of microcontrollers in safety-critical applications e.g., anti-lock systems needs to be monitored permanently. Usually, this task is accomplished by an independent watchdog timer. The monolithic IC U6813B, designed in bipolar technology and qualified according to the needs of the automotive industry, includes such a watchdog timer and provides additional features for added value. With the help of integrated driver stages, it is easy to control safety-related functions of a relay and of an N-channel power MOSFET in high-side applications. In case of a microcontroller malfunction or supply-voltage anomalies, the U6813B provides positive and negative reset and enable output signals. This flexibility guarantees a broad range of applications. The U6813B is based on of Atmel’s fail-safe ICs U6808B and U6809B.

Figure Block Diagram

Fail-safe IC with High-side and Relay Driver

U6813B

VCC 14
3.3-V under- and overvoltage detect.

Bandgap reference

Reset debounce
fosc

Power-on reset

Reset delay
fosc

RELI 13 FETI 12 WDI 11
5-V under- and overvoltage detect.
19k Watchdog
15 SGND
2 GND

Internal oscillator
fosc RCoscillator supervisor

RC oscillator
10 WDC

VCC 3 P-RES
4 N-RES

Current limitation VCC

FET output
8 CAPI
1 RELO
6 N-EN
5 P-EN 9 FETO 7 VS

Pin Configuration

Figure Pinning SO16

RELO 1

GND 2

P-RES 3

N-RES 4

P-EN 5

N-EN 6

CAPI 8
16 3.3V 15 SGND 14 VCC 13 RELI 12 FETI 11 WDI 10 WDC
Ordering Information

Extended Type Number U6813B-MFPG3

Package SO16

Remarks Taped and reeled

Package Information

Package SO16

Dimensions in mm
technical drawings according to DIN specifications
14 U6813B

Atmel Headquarters

Corporate Headquarters 2325 Orchard Parkway San Jose, CA 95131 TEL 1 408 441-0311 FAX 1 408 487-2600

Europe Atmel Sarl Route des Arsenaux 41 Case Postale 80 CH-1705 Fribourg Switzerland TEL 41 26-426-5555 FAX 41 26-426-5500

Asia Room 1219 Chinachem Golden Plaza 77 Mody Road Tsimhatsui East Kowloon Hong Kong TEL 852 2721-9778 FAX 852 2722-1369

Japan 9F, Tonetsu Shinkawa Bldg. 1-24-8 Shinkawa Chuo-ku, Tokyo 104-0033 Japan TEL 81 3-3523-3551 FAX 81 3-3523-7581

Atmel Operations

Memory 2325 Orchard Parkway San Jose, CA 95131 TEL 1 408 441-0311 FAX 1 408 436-4314

Microcontrollers 2325 Orchard Parkway San Jose, CA 95131 TEL 1 408 441-0311 FAX 1 408 436-4314

La Chantrerie BP 70602 44306 Nantes Cedex 3, France TEL 33 2-40-18-18-18 FAX 33 2-40-18-19-60

ASIC/ASSP/Smart Cards Zone Industrielle 13106 Rousset Cedex, France TEL 33 4-42-53-60-00 FAX 33 4-42-53-60-01
1150 East Cheyenne Mtn. Blvd. Colorado Springs, CO 80906 TEL 1 719 576-3300 FAX 1 719 540-1759

Scottish Enterprise Technology Park Maxwell Building East Kilbride G75 0QR, Scotland TEL 44 1355-803-000 FAX 44 1355-242-743

RF/Automotive Theresienstrasse 2 Postfach 3535 74025 Heilbronn, Germany TEL 49 71-31-67-0 FAX 49 71-31-67-2340 1150 East Cheyenne Mtn. Blvd. Colorado Springs, CO 80906 TEL 1 719 576-3300 FAX 1 719 540-1759

Biometrics/Imaging/Hi-Rel MPU/ High Speed Converters/RF Datacom

Avenue de Rochepleine BP 123 38521 Saint-Egreve Cedex, France TEL 33 4-76-58-30-00 FAX 33 4-76-58-34-80
e-mail Web Site

Atmel Corporation Atmel Corporation makes no warranty for the use of its products, other than those expressly contained in the Company’s standard warranty which is detailed in Atmel’s Terms and Conditions located on the Company’s web site. The Company assumes no responsibility for any errors which may appear in this document, reserves the right to change devices or specifications detailed herein at any time without notice, and does not make any commitment to update the information contained herein. No licenses to patents or other intellectual property of Atmel are granted by the Company in connection with the sale of Atmel products, expressly or by implication. Atmel’s products are not authorized for use as critical components in life support devices or systems.
is the registered trademark of Atmel. Other terms and product names may be the trademarks of others.

Printed on recycled paper.

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived U6813B-MFP Datasheet file may be downloaded here without warranties.

Datasheet ID: U6813B-MFP 519524