STM704T/S/R STMicroelectronics, STM704T/S/R Datasheet
STM704T/S/R
Specifications of STM704T/S/R
Related parts for STM704T/S/R
STM704T/S/R Summary of contents
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... RoHS compliance – Lead-free components are compliant with the RoHS directive Table 1. Device summary Watchdog Active- low Input ✓ STM690T/S/R STM704T/S/R STM795T/S/R ✓ STM802T/S/R ✓ STM804T/S/R ✓ STM805T/S/R STM806T/S/R 1. All RST outputs push-pull (unless otherwise noted). 2. Open drain output. August 2010 ...
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Contents Contents 1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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STM690, STM704, STM795, STM802, STM804, STM805, STM806 6 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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List of tables List of tables Table 1. Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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STM690, STM704, STM795, STM802, STM804, STM805, STM806 List of figures Figure 1. Logic diagram (STM690/802/804/805 ...
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Description 1 Description The STM690/704/795/802/804/805/806 supervisors are self-contained devices which provide microprocessor supervisory functions with the ability to non-volatize and write- protect external LPSRAM. A precision voltage reference and comparator monitors the V input for an out-of-tolerance condition. When an ...
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STM690, STM704, STM795, STM802, STM804, STM805, STM806 Figure 3. Logic diagram (STM795) Table 2. Signal names MR WDI RST (1) RST (2) E (2) E CON (2) Vccsw V OUT BAT PFI PFO Open ...
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Description Figure 4. STM690/802/804/805 connections 1. For STM804/805, reset output is active-high and open drain. Figure 5. STM704/806 connections Figure 6. STM795 connections 8/42 STM690, STM704, STM795, STM802, STM804, STM805, STM806 SO8/TSSOP8 V OUT V BAT 1 8 RST (RST) ...
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STM690, STM704, STM795, STM802, STM804, STM805, STM806 1.1 Pin descriptions 1.1.1 MR (manual reset) A logic low on MR asserts the reset output. Reset remains asserted as long low and for t after MR returns high. This ...
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Description 1.1.9 E (chip enable input) The input to the chip enable gating circuit. Connect to ground if unused. 1.1.10 E (conditional chip enable) CON E goes low only when E is low and reset is not asserted ...
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STM690, STM704, STM795, STM802, STM804, STM805, STM806 Figure 7. Block diagram (STM690/802/804/805 BAT WDI PFI 1. For STM804/805, reset output is active-high and open drain. Figure 8. Block diagram (STM704/806 BAT MR PFI V ...
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Description Figure 9. Block diagram (STM795 BAT RST E PFI 12/42 STM690, STM704, STM795, STM802, STM804, STM805, STM806 COMPARE COMPARE E CON OUTPUT CONTROL V PFI COMPARE Doc ID 10519 Rev 9 V OUT ...
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STM690, STM704, STM795, STM802, STM804, STM805, STM806 Figure 10. Hardware hookup Regulator Unregulated V IN voltage From microprocessor For STM690/802/804/805. 2. For STM795 only. 3. Not available on STM795. 4. For STM704/806. V CCSW ( ...
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Operation 2 Operation 2.1 Reset output The STM690/704/795/802/804/805/806 supervisor asserts a reset signal to the MCU whenever V goes below the reset threshold (V CC the push-button reset input (MR) is taken low. RST is guaranteed logic ...
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STM690, STM704, STM795, STM802, STM804, STM805, STM806 2.4 Backup battery switchover In the event of a power failure, it may be necessary to preserve the contents of external SRAM through V automatically switch the SRAM to the backup supply when ...
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Operation 2.5 Chip enable gating (STM795 only) Internal gating of the chip enable (E) signal prevents erroneous data from corrupting the external CMOS RAM in the event of an undervoltage condition. The STM795 uses a series transmission gate from E ...
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STM690, STM704, STM795, STM802, STM804, STM805, STM806 Figure 12. Chip enable waveform (STM795 RST V BAT E CON ½ rec RST E 2.8 Power-fail input/output (NOT available on STM795) The Power-Fail Input (PFI) is ...
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Operation Figure 13. Power-fail comparator waveform (STM690/704/802/804/805/806 RST PFO PFO follows PFI RST 18/42 STM690, STM704, STM795, STM802, STM804, STM805, STM806 Doc ID 10519 Rev 9 t rec PFO follows PFI AI08861a ...
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STM690, STM704, STM795, STM802, STM804, STM805, STM806 2.10 Using a SuperCap™ backup power source SuperCaps™ are capacitors with extremely high capacitance values (e.g., order of 0.47 F) for their size. Figure 14 SuperCap may be connected through a ...
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Typical operating characteristics STM690, STM704, STM795, STM802, STM804, STM805, STM806 3 Typical operating characteristics Note: Typical values are at T Figure 15 on-resistance vs. temperature CC OUT 5.0 4.0 3.0 2.0 1.0 0.0 –40 –20 Figure 16. ...
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STM690, STM704, STM795, STM802, STM804, STM805, STM806 Typical operating characteristics Figure 17. Supply current vs. temperature (no load –40 –20 Figure 18. Battery current vs. temperature 1000 100 10 1 0.1 –40 –20 ...
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Typical operating characteristics STM690, STM704, STM795, STM802, STM804, STM805, STM806 Figure 19. V threshold vs. temperature PFI 1.270 1.265 2.5 V 1.260 3 3.3 V 1.255 3.6 ...
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STM690, STM704, STM795, STM802, STM804, STM805, STM806 Typical operating characteristics Figure 21. Power-up t vs. temperature rec 240 235 230 225 220 215 210 –40 –20 Figure 22. Normalized reset threshold vs. temperature 1.004 1.002 1.000 0.998 0.996 –40 –20 ...
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Typical operating characteristics STM690, STM704, STM795, STM802, STM804, STM805, STM806 Figure 23. Watchdog time-out period vs. temperature 1.90 1.85 1.80 1.75 1.70 1.65 1.60 –40 –20 Figure 24 on-resistance vs. temperature CON ...
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STM690, STM704, STM795, STM802, STM804, STM805, STM806 Typical operating characteristics Figure 25. PFI to PFO propagation delay vs. temperature 4.0 3.0 2.0 1.0 0.0 –40 –20 Figure 26. Output voltage vs. load current (V 5.00 4.98 4.96 4. ...
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Typical operating characteristics STM690, STM704, STM795, STM802, STM804, STM805, STM806 Figure 27. Output voltage vs. load current (V 2.80 2.78 2.76 2.74 2.72 2.70 2.68 2.66 0.0 Figure 28. RST output voltage vs. supply voltage ...
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STM690, STM704, STM795, STM802, STM804, STM805, STM806 Typical operating characteristics Figure 29. RST output voltage vs. supply voltage Figure 30. Power-fail comparator response time (assertion PFO 1.3 V PFI V RST V ...
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Typical operating characteristics STM690, STM704, STM795, STM802, STM804, STM805, STM806 Figure 31. Power-fail comparator response time (de-assertion) PFO 0 V PFI 0 V Figure 32. Maximum transient duration vs. reset threshold overdrive 6000 5000 4000 3000 2000 1000 0 0 ...
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STM690, STM704, STM795, STM802, STM804, STM805, STM806 Typical operating characteristics Figure 33 propagation delay vs. temperature CON 4.0 3.0 2.0 1.0 0.0 –40 – Temperature (°C) Doc ID 10519 Rev ...
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Maximum ratings 4 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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STM690, STM704, STM795, STM802, STM804, STM805, STM806 5 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 ...
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DC and AC parameters Figure 36. MR timing waveform MR t MLRL (1) RST 1. RST for STM805. Figure 37. Watchdog timing rec RST WDI Table 7. DC and AC characteristics Alter- Sym Description native V , ...
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STM690, STM704, STM795, STM802, STM804, STM805, STM806 Table 7. DC and AC characteristics (continued) Alter- Sym Description native on-resistance BAT OUT Input leakage current (MR Input leakage current (PFI) Input leakage current (WDI) Output leakage ...
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DC and AC parameters Table 7. DC and AC characteristics (continued) Alter- Sym Description native PFO output short to GND I SC current Battery switchover Battery backup switchover (8)(9) voltage Hysteresis Reset thresholds (10) V Reset ...
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STM690, STM704, STM795, STM802, STM804, STM805, STM806 Table 7. DC and AC characteristics (continued) Alter- Sym Description native propagation delay CON Reset to E CON I E short circuit current SC CON 1. Valid for ambient operating ...
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Package mechanical data 6 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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STM690, STM704, STM795, STM802, STM804, STM805, STM806 Figure 38. SO8 – 8-lead plastic small outline, 150 mils body width, package mechanical drawing A2 B Table 8. SO8 - 8-lead plastic small outline, 150 mils body width, package mechanical data Symb ...
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Package mechanical data Figure 39. TSSOP8 – 8-lead, thin shrink small outline body size, outline A CP Table 9. TSSOP8 - 8-lead, thin shrink small outline body size, mechanical data Symb A ...
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STM690, STM704, STM795, STM802, STM804, STM805, STM806 7 Part numbering Table 10. Ordering information scheme Example: Device type STM690/704/795/802/804/805/806 Reset threshold voltage T = STM690/704/795/805 = V STM802/804/806 = STM690/704/795/805 = V STM802/804/806 = ...
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Part numbering Table 11. Marking description Part number STM690T STM690S STM690R STM704T STM704S STM704R STM795T STM795S STM795R STM802T STM802S STM802R STM804T STM804S STM804R STM805T STM805S STM805R STM806T STM806S STM806R 40/42 STM690, STM704, STM795, STM802, STM804, STM805, STM806 Reset threshold Package ...
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STM690, STM704, STM795, STM802, STM804, STM805, STM806 8 Revision history Table 12. Document revision history Date 31-Oct-2003 22-Dec-2003 16-Jan-2004 07-Apr-2004 25-May-2004 02-Jul-2004 29-Sep-2004 25-Feb-2005 05-Apr-2006 20-Nov-2009 18-Aug-2010 Revision 1 Initial release. Reformatted; update characteristics 2 Table ...
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