STM1811 STMicroelectronics, STM1811 Datasheet

Page 1

... 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) ■ ...

Page 2

Contents Contents 1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

Page 3

... 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. ...

Page 4

... Logic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Figure 2. SOT23-3 connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Figure 3. Hardware hookup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Figure 4. Push-pull active-low output (STM1810/1812/1815/1817 Figure 5. Open-drain, active-low output (STM1811/1816 Figure 6. Open-drain, active-low output (bidirectional, manual reset detect, STM1813/1818 Figure 7. Reset timing diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Figure 8. Push-button manual reset with MR detect (STM1813/1818 Figure 9. Manual reset timing diagram, switch bounce/debounce (STM1813/1818 Figure 10 ...

Page 5

... 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 / STM1818) also have an internal pull-up resistor to V feature a debounced manual reset feature that asserts a reset if the RST pin is pulled low for more than 1.5 µ ...

Page 6

Description Table 2. Signal names Symbol V Ground SS RST Active-low reset output (1) RST Active-high reset output V Supply voltage and input for reset threshold monitor CC 1. For STM1812, STM1817. Figure 2. SOT23-3 connections 2. RST for STM1812 ...

Page 7

... 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 ...

Page 8

... V CC Supply voltage and input for V 1.2 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 ...

Page 9

... MCU’s that have bidirectional reset pins. Connecting the µP supervisor’s reset (RST) output directly to the microcontroller’s reset (RST) pin allows either device to assert reset (Figure 10). No external pull-up resistor is required within the STM1811/STM1816. 2.4 Negative going V The STM181x are relatively immune to negative-going V shows typical transient duration versus reset comparator overdrive (for which the STM181x will NOT generate a reset pulse) ...

Page 10

Operation 2.5 Valid RST output down to V When V falls below 1 V, the RST output no longer sinks current, but becomes an open CC circuit. In most systems this is not a problem, as most MCUs do not ...

Page 11

... 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 Doc ID11464 Rev 8 Operation 11/25 ...

Page 12

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 ...

Page 13

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 ...

Page 14

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 – ...

Page 15

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 ...

Page 16

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 ...

Page 17

... 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. ...

Page 18

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 ...

Page 19

... Push-button reset detect (STM1813, STM1818) t Push-button detect to RST PB t Push-button RST time-out PBRST Internal pull-up resistance 1. Valid for ambient operating temperature The STM1811/1813/1816/1818 have an internal pull-up resistor which may sink current. Test condition +105 ° –40 to +105 ° ...

Page 20

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 ...

Page 21

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 ...

Page 22

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. ...

Page 23

... 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). ...

Page 24

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 , ...

Page 25

... 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. ...