MAX6822 MAXIM [Maxim Integrated Products], MAX6822 Datasheet
MAX6822
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MAX6822 Summary of contents
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... CC Nine preprogrammed reset threshold voltages are available (see Threshold Suffix Guide). The MAX6821, MAX6822, and MAX6823 all have a manual reset input and a watchdog timer. The MAX6821 has push-pull RESET, the MAX6822 has open-drain RESET, and the MAX6823 has push-pull RESET. The MAX6824 has a watchdog timer and both push-pull RESET and push- pull RESET ...
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Low-Voltage SOT23 µP Supervisors with Manual Reset and Watchdog Timer ABSOLUTE MAXIMUM RATINGS V to GND ...........................................................-0.3V to +6.0V CC Open-Drain RESET................................................-0.3V to +6.0V Push-Pull RESET, RESET, MR, WDI ...........-0. Input Current (V ) .............................................................20mA CC Output Current ...
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... Only) Open-Drain RESET Output Leakage Current (Note 1) RESET Output HIGH (Push-Pull Only Outp ush Onl y) MANUAL RESET INPUT (MAX6821/MAX6822/MAX6823/MAX6825) MR Input Voltage MR Minimum Input Pulse MR Glitch Rejection MR to Reset Delay MR Pullup Resistance WATCHDOG INPUT (MAX6821/MAX6822/MAX6823/MAX6824) Watchdog Timeout Period ...
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Low-Voltage SOT23 µP Supervisors with Manual Reset and Watchdog Timer (T = +25°C, unless otherwise noted.) A SUPPLY CURRENT vs. TEMPERATURE +5V, L VERSION +3.3V, S VERSION CC 7 ...
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... Many µP-based products require manual reset capabil- ity, allowing the operator, a test technician, or external logic circuitry to initiate a reset. On the MAX6821/ MAX6822/MAX6823/MAX6825, a logic low on MR asserts a reset. Reset remains asserted while MR is low, and for the timeout period (140ms min) after it ...
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... RESET RESET GND Figure 2. Reset Timing Diagram Since the RESET output on the MAX6822 is open drain, it interfaces easily with µPs that have bidirectional reset pins, such as the Motorola 68HC11. Connecting the µP supervisor’s RESET output directly to the microcon- troller’s RESET pin with a single pullup resistor allows either device to assert reset (see Figure 4) ...
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... RP WD Figure 4. Interfacing Open-Drain RESET to µPs with Bidirectional Reset I/O Figure 5. Watchdog Flow Diagram MANUAL RESET MAX6822 RESET RESET µ RESET GENERATOR GND GND START SET WDI HIGH PROGRAM CODE SUBROUTINE OR PROGRAM LOOP ...
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... Low-Voltage SOT23 µP Supervisors with Manual Reset and Watchdog Timer ACTIVE-LOW FUNCTION RESET MAX6821 — MAX6822 — ✔ MAX6823 ✔ MAX6824 ✔ MAX6825 TOP VIEW RESET GND RESET Chip Information TRANSISTOR COUNT: 750 PROCESS: BiCMOS 8 _______________________________________________________________________________________ ACTIVE-HIGH OPEN-DRAIN RESET RESET ✔ ...
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Low-Voltage SOT23 µP Supervisors with Manual Reset and Watchdog Timer Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change ...