STM1812 STMicroelectronics, STM1812 Datasheet
STM1812
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STM1812 Summary of contents
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... STM1810 STM1811 STM1812 STM1813 STM1815 STM1816 STM1817 STM1818 Features ■ Precision monitoring 3.3 V, and 5 V supply voltages ■ Four output configurations: – Push-pull, active-high (STM1812,1817) – Push-pull, active-low (STM1810,1815) – Open-drain, active-low (STM1811,1816) – Open-drain, active-low with push-button detect (STM1813,1818) ■ ...
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Contents Contents 1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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... STM1810/1811/1812/1813/1815/1816/1817/1818 List of tables Table 1. Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Table 2. Signal names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Table 3. STM1810/STM1815 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Table 4. STM1811/STM1816 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Table 5. STM1812/STM1817 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Table 6. STM1813/STM1818 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Table 7. Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Table 8. Operating and AC measurement conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Table 9. DC and AC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Table 10. SOT23-3 – 3-lead small outline transistor package mechanical data Table 11. ...
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List of figures List of figures Figure 1. Logic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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... The STM1813/1818 also keep reset asserted for t momentarily pulled to ground by an external push-button switch. The STM1812 and STM1817 have an active-high, push-pull output. The STM1810 and STM1815 (push-pull) and STM1811, STM1813, STM1816, and STM1818 (open-drain) have an active-low RST output. The open-drain devices (STM1811 / STM1813 / STM1816 / ...
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... Supply voltage and input for reset threshold monitor CC 1. For STM1812, STM1817. Figure 2. SOT23-3 connections 2. RST for STM1812 and STM1817. Figure 3. Hardware hookup 1. RST for STM1812 and STM1817 (see 2. Only valid for STM1813 and STM1818. 6/25 STM1810/1811/1812/1813/1815/1816/1817/1818 Description Table 1). Doc ID11464 Rev 8 ...
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... STM1810/1811/1812/1813/1815/1816/1817/1818 1.1 Functional block diagrams Figure 4. Push-pull active-low output (STM1810/1812/1815/1817) 1. RST for STM1812 and STM1817. Figure 5. Open-drain, active-low output (STM1811/1816) 1. 5.5 kΩ internal pull-up resistor. Figure 6. Open-drain, active-low output (bidirectional, manual reset detect, STM1813/1818) 1. 5.5 kΩ internal pull-up resistor. 1.2 Pin descriptions See ...
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... Ground, is the reference for the power supply. It must be connected to the system ground. Table 3. STM1810/STM1815 Pin Name 1 RST Table 4. STM1811/STM1816 Pin Name 1 RST Table 5. STM1812/STM1817 Pin Name 1 RST Table 6. STM1813/STM1818 Pin Name 1 RST 8/25 STM1810/1811/1812/1813/1815/1816/1817/1818 drops below V ...
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STM1810/1811/1812/1813/1815/1816/1817/1818 2 Operation 2.1 Reset output The STM181x asserts a reset signal to the microcontroller (MCU) whenever V below the reset threshold (V 105 °C). A microcontroller’s (MCU) reset input starts the MCU in a known state. The STM1810 - ...
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... Note: The same situation applies for the active-high RST of the STM1810/1812. A 100 k resistor to V should be used if RST must remain valid for V CC Figure 7. Reset timing diagram 1. RST for STM1812 and STM1817. Figure 8. Push-button manual reset with MR detect (STM1813/1818) 10/25 STM1810/1811/1812/1813/1815/1816/1817/1818 = Figure 11) ...
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STM1810/1811/1812/1813/1815/1816/1817/1818 Figure 9. Manual reset timing diagram, switch bounce/debounce (STM1813/1818) Figure 10. Interfacing MCUs with bidirectional reset pins (RST, open-drain, STM1811/1816) Figure 11. Valid reset (RST) output down ~100 kΩ resistor recommended (push-pull) CC ...
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Operation Figure 12. Valid reset (RST) output down ~100 kΩ resistor recommended. 12/25 STM1810/1811/1812/1813/1815/1816/1817/1818 = 0 V (push-pull) CC Doc ID11464 Rev 8 ...
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STM1810/1811/1812/1813/1815/1816/1817/1818 3 Typical operating characteristics Typical values are at T Figure 13. Supply current vs. temperature (no load) Figure 14. Normalized reset time-out period ( ° – Doc ID11464 ...
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Typical operating characteristics Figure 15 Figure 16. Voltage output low vs. I 14/25 STM1810/1811/1812/1813/1815/1816/1817/1818 -to-reset output delay vs. temperature - V SINK Doc ID11464 Rev – ...
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STM1810/1811/1812/1813/1815/1816/1817/1818 Figure 17. Voltage output high vs. I Figure 18. Normalized reset threshold vs. temperature Typical operating characteristics SOURCE Doc ID11464 Rev 8 15/25 ...
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Typical operating characteristics Figure 19. Max. transient duration NOT causing reset pulse vs. reset threshold overdrive 1. Reset occurs above the line. 16/25 STM1810/1811/1812/1813/1815/1816/1817/1818 Doc ID11464 Rev 8 ...
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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 7. ...
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DC and AC parameters 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 derived from tests ...
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... CC RST (STM1810/STM1815) ≤ (min.), reset asserted CC RST (STM1812/STM1817) ≥ 2.7 V, reset asserted 0.4 V OUT (STM1810/1811/1813/1815/1816/1818) ≥ 2.7 V, reset not asserted 0.4 V, (STM1812/1817) OUT (2) STM181xL STM181xM STM181xT STM181xS STM181xR 100 mV) falling – 200 mV Rising CC STM1813/1818 From rising edge ...
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Package mechanical 6 Package mechanical ® 6.1 ECOPACK 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 ...
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STM1810/1811/1812/1813/1815/1816/1817/1818 Table 10. SOT23-3 – 3-lead small outline transistor package mechanical data Symbol Typ. Min. Max. 0.89 1.12 0.01 0.10 0.88 1.02 0.30 0.50 0.08 ...
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Part numbering 7 Part numbering Table 11. Ordering information scheme Example Device type STM181x Reset threshold voltage STM1810 - 1813 4. 4.75 V (4.62 V typ.) RST 4. ...
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... STM1810/1811/1812/1813/1815/1816/1817/1818 Table 12. Marking description Part number STM1810L STM1810M STM1811L STM1811M STM1812L STM1812M STM1813L STM1813M STM1815T STM1815S STM1815R STM1816T STM1816S STM1816R STM1817T STM1817S STM1817R STM1818T STM1818S STM1818R letter assigned to indicate assembly work week (i.e WW01 and WW02 WW03 and WW04 WW05 and WW06..., Z = WW51, WW52, and WW53). ...
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Revision history 8 Revision history Table 13. Document revision history Date Revision 26-Aug-04 05-Oct-04 19-Nov-04 07-Dec-04 29-Jun-05 11-Oct-05 28-Aug-2007 02-Sep-2010 24/25 STM1810/1811/1812/1813/1815/1816/1817/1818 1.0 First Issue. 2.0 Update reset characteristics, add typical graphs, remove SC70 references (Figure , ...
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... STM1810/1811/1812/1813/1815/1816/1817/1818 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. ...