STM706RM6F STMicroelectronics, STM706RM6F Datasheet
STM706RM6F
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STM706RM6F Summary of contents
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STM706T/S/R, STM706P, STM708T/S/R Features ■ Precision V monitor CC – STM706/708 T: 3. 3.15 V RST S: 2. 3.00 V RST R: STM706P: 2.59 V ■ RST and RST outputs ■ 200 ms (typ.) t rec ...
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Contents Contents 1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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STM706T/S/R, STM706P, STM708T/S/R List of tables Table 1. Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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List of figures List of figures Figure 1. Logic diagram (STM706T/S/R and STM706P ...
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STM706T/S/R, STM706P, STM708T/S/R 1 Description The STM70x 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 ...
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Description Table 2. Signal names Symbol MR Push-button reset input WDI Watchdog input WDO Watchdog output RST Active-low reset output (1) RST Active-high reset output V Supply voltage CC PFI Power-fail input PFO Power-fail output V Ground ...
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STM706T/S/R, STM706P, STM708T/S/R Figure 5. STM708T/S/R SO8 connections Figure 6. STM708T/S/R TSSOP8 connections SO8 RST RST PFI 4 5 PFO TSSOP8 RST RST 2 7 ...
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Pin descriptions 2 Pin descriptions 2 logic low on MR asserts the reset output. Reset remains asserted as long low and for t after MR returns high. This active-low input has an internal pull-up. It ...
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STM706T/S/R, STM706P, STM708T/S/R 2.7 PFO When PFI is less than V unused. Output type is push-pull. Table 3. Pin description Pin STM706P STM706T/S/R SO8 TSSOP8 SO8 — — ...
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Pin descriptions Figure 8. Block diagram (STM708T/S/ PFI Figure 9. Hardware hookup Regulator Unregulated V IN voltage For STM706T/S/R and STM706P. 2. For STM706P and STM708T/S/R. 10/33 V COMPARE RST V COMPARE ...
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STM706T/S/R, STM706P, STM708T/S/R 3 Operation 3.1 Reset output The STM70x supervisor asserts a reset signal to the MCU whenever V reset threshold (V push-button reset input (MR) is taken low. RST is guaranteed logic low (logic high ...
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Operation 3.5 Power-fail input/output The power-fail input (PFI) is compared to an internal reference voltage (independent from the V comparator). If PFI is less than the power-fail threshold (V RST output (PFO) will go low. This function is intended for ...
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STM706T/S/R, STM706P, STM708T/S/R 3.7 Interfacing to microprocessors with bi-directional reset pins Microprocessors with bi-directional reset pins can contend with the STM70x reset output. For example, if the reset output is driven high and the micro wants to pull it low, ...
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Typical operating characteristics 4 Typical operating characteristics Typical values are at T Figure 12. Supply current vs. temperature (no load –40 –20 14/ ° Temperature (°C) Doc ...
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STM706T/S/R, STM706P, STM708T/S/R Figure 13. V threshold vs. temperature PFI 1.270 1.265 2.5 V 1.260 3 3.3 V 1.255 3.6 V 1.250 1.245 1.240 1.235 1.230 1.225 ...
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Typical operating characteristics Figure 15. Power-up t vs. temperature rec 240 235 230 225 220 215 210 –40 –20 0 Figure 16. Normalized reset threshold vs. temperature 1.004 1.002 1.000 0.998 0.996 –40 –20 16/33 STM706T/S/R, STM706P, STM708T/S ...
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STM706T/S/R, STM706P, STM708T/S/R Figure 17. Watchdog timeout period vs. temperature 1.90 1.85 1.80 1.75 1.70 1.65 1.60 –40 –20 Figure 18. PFI to PFO propagation delay vs. temperature 4.0 3.0 2.0 1.0 0.0 –40 – Temperature ...
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Typical operating characteristics Figure 19. Output voltage vs. load current (V 5.00 4.98 4.96 4. 18/33 STM706T/S/R, STM706P, STM708T/S ° OUT (mA) Doc ID 10518 Rev 10 ...
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STM706T/S/R, STM706P, STM708T/S/R Figure 20. RST output voltage vs. supply voltage Figure 21. RST output voltage vs. supply voltage Typical operating characteristics V RST V CC 500 ms ...
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Typical operating characteristics Figure 22. Power-fail comparator response time (assertion PFO 1.3 V PFI Figure 23. Power-fail comparator response time (de-assertion) PFO 0 V PFI 0 V 20/33 STM706T/S/R, STM706P, STM708T/S/R 500 ns / div 500 ns / ...
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STM706T/S/R, STM706P, STM708T/S/R Figure 24. Maximum transient duration vs. reset threshold overdrive 6000 5000 4000 3000 2000 1000 Reset occurs above the curve Reset comparator overdrive, V ...
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Maximum ratings 5 Maximum ratings Stressing the device above the rating listed in the “absolute maximum ratings” table may cause permanent damage to the device. These are stress ratings only and operation of the device at these or any other ...
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STM706T/S/R, STM706P, STM708T/S 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 ...
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DC and AC parameters Figure 27. MR timing waveform MR t MLRL (1) RST 1. RST for STM706P and STM708T/S/R. Figure 28. Watchdog timing (STM706T/S/R and STM706P RST WDI WDO 24/33 t rec t MLMH t rec Doc ...
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STM706T/S/R, STM706P, STM708T/S/R Table 6. DC and AC characteristics Symbol Description V Operating voltage supply current CC CC Input leakage current (WDI) Input leakage current I (PFI) LI Input leakage current (MR) V Input high voltage (MR) ...
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DC and AC parameters Table 6. DC and AC characteristics (continued) Symbol Description Reset thresholds (3) V Reset threshold RST Reset threshold hysteresis t RST pulse width rec Push-button reset input t MLMH MR pulse width ( ...
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STM706T/S/R, STM706P, STM708T/S/R 7 Package mechanical data In order to meet environmental requirements, ST offers these devices in different grades of ® ECOPACK packages, depending on their level of environmental compliance. ECOPACK specifications, grade definitions and product status are available ...
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Package mechanical data Figure 29. SO8 – 8-lead plastic small outline, 150 mils body width, package mechanical A2 B Note: Drawing is not to scale. Table 7. SO8 - 8-lead plastic small outline, 150 mils body width, package mechanical data ...
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STM706T/S/R, STM706P, STM708T/S/R Figure 30. TSSOP8 – 8-lead, thin shrink small outline body size, outline A CP Note: Drawing is not to scale. Table 8. TSSOP8 - 8-lead, thin shrink small outline ...
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Part numbering 8 Part numbering Table 9. Ordering information scheme Example: Device type STM706 STM708 Reset threshold voltage T: 3. RST S: 2. RST R, STM706P: 2.59 V RST pulse width Blank = 140 to 280 ...
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STM706T/S/R, STM706P, STM708T/S/R Table 10. Marking description Part number STM706P STM706T STM706S STM706R STM708T STM708S STM708R Reset threshold Package SO8 2.63 V TSSOP8 SO8 3.08 V TSSOP8 SO8 2.93 V TSSOP8 SO8 2.63 V TSSOP8 SO8 3.08 V TSSOP8 SO8 ...
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Revision history 9 Revision history Table 11. Document revision history Date Revision Oct-2003 12-Dec-2003 16-Jan-2004 09-Apr-2004 25-May-2004 02-Jul-2004 21-Sep-2004 25-Feb-2005 02-Nov-2009 30-Apr-2010 06-Aug-2010 32/33 1 Initial release. Reformatted; update characteristics 2 Table 6 to 9). 2.1 Add Typical operating characteristics ...
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