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MAX6323 Datasheet(PDF) 1 Page - Maxim Integrated Products |
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MAX6323 Datasheet(HTML) 1 Page - Maxim Integrated Products |
1 / 13 page General Description The MAX6323/MAX6324 microprocessor (µP) supervi- sory circuits monitor power supplies and µP activity in digital systems. A watchdog timer looks for activity out- side an expected window of operation. Six laser- trimmed reset thresholds are available with ±2.5% accuracy from +2.32V to +4.63V. Valid RESET output is guaranteed down to VCC = +1.2V. The RESET output is either push-pull (MAX6323) or open-drain (MAX6324). RESET is asserted low when VCC falls below the reset threshold, or when the manual reset input (MR) is asserted low. RESET remains assert- ed for at least 100ms after VCC rises above the reset threshold and MR is deasserted. The watchdog pulse output (WDPO) utilizes an open- drain configuration. It can be triggered either by a fast timeout fault (watchdog input pulses are too close to each other) or a slow timeout fault (no watchdog input pulse is observed within the timeout period). The watchdog timeout is measured from the last falling edge of watchdog input (WDI) with a minimum pulse width of 300ns. WDPO is asserted for 1ms when a fault is observed. Eight laser-trimmed timeout periods are available. The MAX6323/MAX6324 are offered in a 6-pin SOT23 package and operate over the extended temperature range (-40°C to +125°C). Applications Automotive Industrial Medical Embedded Control Systems Features o Min/Max (Windowed) Watchdog, 8 Factory-Trimmed Timing Options o Pulsed Open-Drain, Active-Low Watchdog Output o Power-On Reset o Precision Monitoring of +2.5V, +3.0V, +3.3V, and +5.0V Power Supplies o Open-Drain or Push-Pull RESET Outputs o Low-Power Operation (23µA typ) o Debounced Manual Reset Input o Guaranteed Reset Valid to VCC = +1.2V µP Supervisory Circuits with Windowed (Min/Max) Watchdog and Manual Reset ________________________________________________________________ Maxim Integrated Products 1 GND VCC WDI 16 5 MAX6323 MAX6324 SOT23 TOP VIEW 2 34 RESET MR WDPO 19-1838; Rev 5; 5/10 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. *These devices are factory trimmed to one of eight watchdog- timeout windows and one of six reset voltage thresholds. Insert the letter corresponding to the desired watchdog-timeout window (A, B, C, D, E, F, G, or H) into the blank following the number 6323 or 6324 (see Watchdog Timeout table). Insert the two-digit code (46, 44, 31, 29, 26, or 23) after the letters UT for the desired nominal reset threshold (see Reset Threshold Range table at end of data sheet). /V denotes an automotive qualified part. Devices are available in both leaded and lead-free packaging. Specify lead-free by replacing “-T” with “+T” when ordering. Note: There are eight standard versions of each device available (see Standard Versions table). Sample stock is generally held on standard versions only. Standard versions have an order incre- ment requirement of 2500 pieces. Nonstandard versions have an order increment requirement of 10,000 pieces. Contact factory for availability of nonstandard versions. Pin Configuration Ordering Information Typical Operating Circuit appears at end of data sheet. WATCHDOG TIMEOUT* SUFFIX A B C D E F G H 719 39 23 15 15 15 15 1.5 MAX FAST UNITS ms ms ms ms ms ms ms ms SLOW MIN UNITS ms 10 100 300 10 60 s ms 47 82 1.3 s * See Figure 1 for operation. Watchdog Timeout PART TEMP RANGE PIN- PACKAGE RESET OUTPUT MAX6323_UT_ _-T -40°C to +125°C 6 SOT23 Push-Pull Ordering Information continued at end of data sheet. |
Similar Part No. - MAX6323_10 |
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Similar Description - MAX6323_10 |
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