MB3793-27APNF-G-JN-ER6E1 Infineon

MB3793-27A Power Voltage Monitoring IC with Watchdog Timer Description The MB3793 is an integrated circuit to monitor power voltage it incorporates a watchdog timer. A reset signal is output when the power is cut or falls abruptly. When the power recovers normally after resetting, a power-on reset signal is output to microprocessor units (MPUs). An internal watchdog timer with two inputs for system operation diagnosis can provide a fall-safe function for various application systems. Features Precise detection of power voltage fall: 2.5% Detection voltage with hysteresis Low power dispersion: I = 31 A (reference) CC Internal dual-input watchdog timer Watchdog-timer halt function (by inhibition pin) Independently-set watchdog and reset times Three types of packages (SOP-8pin : 2 types) Application Arcade Amusement etc. Cypress Semiconductor Corporation 198 Champion Court San Jose, CA 95134-1709 408-943-2600 Document Number: 002-08550 Rev. *C Revised June 29, 2017MB3793-27A Contents Description ............................................................................. 1 9. Operation Sequence ........................................................ 13 Features .................................................................................. 1 9.1 Positive clock pulse input ......................................... 13 Application ............................................................................. 1 9.2 Negative clock pulse input ........................................ 13 Contents ................................................................................. 2 9.3 Clock monitoring ....................................................... 13 1. Pin Assignment ................................................................. 3 9.4 Description of Operations ......................................... 13 2. Pin Description .................................................................. 3 10. Typical Characteristics ................................................. 15 3. Block Diagram ................................................................... 4 11. Application Example ..................................................... 18 4. Block Description .............................................................. 5 11.1 Supply voltage monitor and watchdog timer (1-clock 5. Absolute Maximum Ratings ............................................. 5 monitor) ................................................................................. 18 6. Recommended Operating Conditions ............................. 6 11.2 Supply voltage monitor and watchdog timer stop ... 19 7. Electrical Characteristics .................................................. 7 12. Typical Application ........................................................ 20 7.1 DC Characteristics ..................................................... 7 13. Notes On Use ................................................................. 21 7.2 AC Characteristics ...................................................... 7 14. Ordering Information ..................................................... 21 8. Diagram .............................................................................. 8 15. RoHS Compliance Information...................................... 21 8.1 Basic operation (Positive clock pulse) ........................ 8 16. Package Dimensions ..................................................... 22 8.2 Basic operation (Negative clock pulse) ......................9 17. Major Changes ............................................................... 24 8.3 Single-clock input monitoring (Positive clock pulse) . 10 Document History ............................................................... 24 8.4 Inhibition operation (Positive clock pulse) ................ 11 Sales, Solutions, and Legal Information ...........................25 8.5 Clock pulse input supplementation (Positive clock pulse) ............................................................. 12 Document Number: 002-08550 Rev. *C Page 2 of 25