stm6823sjwy6f STMicroelectronics, stm6823sjwy6f Datasheet
stm6823sjwy6f
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stm6823sjwy6f Summary of contents
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Supervisor with watchdog timer and push-button reset Features ■ Precision V monitoring 2.5V CC power supplies ■ RST Outputs (active-low, push-pull or open drain) ■ RST Outputs (active-high, push-pull) ■ Reset pulse width of ...
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Contents 1 Summary description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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List of tables Table 1. Device options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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List of figures Figure 1. Logic diagram (STM6821/6822/6823 ...
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Summary description The STM6xxx Supervisors are self-contained devices which provide microprocessor supervisory functions. A precision voltage reference and comparator monitors the V for an out-of-tolerance condition. When an invalid V (RST) is forced low (or high in the case ...
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Figure 3. STM6822/6823 SOT23-5 connections 1. Open drain for STM6822. Figure 4. STM6821 SOT23-5 connections 1. Push-pull only. Figure 5. STM6322/6825 SOT23-5 connections 1. Open drain for STM6322. 2. Push-pull only. Figure 6. STM6321/6824 SOT23-5 connections 1. Open drain for ...
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Pin descriptions 1.1.1 Active-low, push-pull reset output (RST) - STM6822/6823/6824/6825 Pulses low when triggered, and stays low whenever V when logic low. It remains low for t threshold, the watchdog triggers a reset goes ...
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Figure 7. Block diagram (STM6821/6822/6823) WDI Push-pull for STM6823, open drain for STM6822. 2. Active-high (push-pull) for STM6821. Figure 8. Block diagram (STM6321/6824) WDI Acive-low (open drain) for STM6321, active-low (push-pull) for STM6824. ...
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Figure 10. Hardware hookup V 0.1μF From Microprocessor Push-button 1. For STM6321/6821/6822/6823/6824 2. For STM6322/6821/6822/6823/6825 3. For STM6821/ (RST output only) 4. For STM6321/6322/6824/6825 (both RST and RST outputs STM6XXX (1) WDI (2) MR (3) RST (RST) ...
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Operation 2.1 Reset output The STM6xxx Supervisor asserts a reset signal to the MCU whenever V reset threshold (V RST (MR) is taken low. Reset is guaranteed valid for V to 85°C. During power-up, once V for the reset ...
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Push-button reset input (STM6322/6821/6822/6823/6825) A logic low on MR asserts reset. Reset remains asserted while MR is low, and for t Figure 25 on page resistor, allowing left open if not used. This input can be ...
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Figure 12. Ensuring RST valid to V Figure 13. Ensuring RST valid This configuration does not work on open drain outputs of the STM6321/6322/6822. 2.6 Interfacing to microprocessors with bi-directional reset pins Microprocessors with bi-directional reset pins ...
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Typical operating characteristics Figure 15. V -to-Reset output delay vs. temperature –40 Figure 16. Supply current vs. temperature –40 – ...
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Figure 17. MR-to-reset output delay vs. temperature 600 500 400 300 200 100 0 –40 Figure 18. Normalized power-up t 1.05 1.04 1.03 1.02 1.01 1.00 0.99 14/26 – Temperature (˚C) vs. temperature rec –40 – ...
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Figure 19. Normalized reset threshold voltage vs. temperature 1.05 1.04 1.03 1.02 1.01 1.00 0.99 0.98 0.97 0.96 0.95 –40 –20 Figure 20. Normalized power-up watchdog time-out period 1.05 1.04 1.03 1.02 1.01 1.00 0.99 –40 – ...
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Figure 21. Voltage output low vs. I 0.35 0.30 0.25 0.20 0.15 0.10 0.05 0.00 0 Figure 22. Voltage output high vs. I 2.92 2.90 2.88 2.86 2.84 2.82 2.80 2.78 2.76 2.74 0.0 0.1 16/26 SINK ...
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Figure 23. Maximum transient duration vs. reset threshold overdrive 100 120 140 160 Reset Threshold Overdrive (mV 180 200 AI09637a 17/26 ...
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... These are stress ratings only and operation of the device at these or any other conditions above those indicated in the Operating sections of this specification is not implied. Exposure to Absolute Maximum Rating conditions for extended periods may affect device reliability. Refer also to the STMicroelectronics SURE Program and other relevant quality documents. Table 4. ...
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DC and AC parameters This section summarizes the operating measurement conditions, and the DC and AC characteristics of the device. The parameters in the DC and AC characteristics Tables that follow, are derived from tests performed under the Measurement ...
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Table 6. DC and AC characteristics Alter- Sym Description native V Operating Voltage CC V Supply Current CC (MR and WDI unconnected Supply Current CC CC (MR unconnected; STM6322/6825) Input Leakage Current I Input Leakage Current LI (3) ...
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Alter- Sym Description native Reset Thresholds (5) V Reset Threshold RST Reset Threshold Hysteresis V to RST Delay CC (V – 100mV, V RST CC falling at 1mV/µs) (7) t Reset Pulse Width rec Reset Threshold Temperature Coefficient ...
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Package mechanical data Figure 27. SOT23-5 – 5-lead small outline transistor package mechanical drawing D 1. Drawing is not to scale. Table 7. SOT23-5 – 5-lead small outline transistor package mechanical data Symb Typ A 1.200 A1 A2 1.050 ...
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Part numbering Table 8. Ordering information scheme Example: Device Type STM6xxx Reset Threshold Voltage 4.514 to 4.746V RST 4.270 to 4.490V RST 3.000 to 3.150V RST 2.850 ...
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... STM6322RWY6F STM6821LWY6F STM6821MWY6F STM6821TWY6F STM6821SWY6F STM6821RWY6F STM6822LWY6F STM6822MWY6F STM6822TWY6F STM6822SWY6F STM6822RWY6F STM6823LWY6F STM6823MWY6F STM6823TJWY6F STM6823TWY6F STM6823SJWY6F STM6823SWY6F STM6823RJWY6F STM6823RWY6F STM6824LWY6F STM6824MWY6F STM6824TWY6F STM6824SWY6F STM6824RWY6F STM6825LWY6F STM6825MWY6F STM6825TWY6F STM6825SWY6F STM6825RWY6F Note: Where “x” = Assembly Work Week (A to Z), such that “A” = WW01-02, “B” = WW03-04, and so forth ...
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Revision history Table 10. Document revision history Date August 25, 2004 15-Dec-04 10-Mar-05 17-Jun-05 11-Apr-06 11-Aug-2006 25-May-2007 Revision 1.0 First Draft 2.0 Update characteristics (Figure 3.0 Document promoted to Datasheet status 4.0 Package marking update Update characteristics, Lead-free text, ...
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... Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. ...