STM811S STMicroelectronics, STM811S Datasheet

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STM811S

Manufacturer Part Number
STM811S
Description
Manufacturer
STMicroelectronics
Datasheet

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FEATURES SUMMARY
Table 1. Device Options
November 2004
STM809
STM810
STM811
STM812
PRECISION MONITORING OF 3V, 3.3V, and
5V SUPPLY VOLTAGES
TWO OUTPUT CONFIGURATIONS
140ms RESET PULSE WIDTH (MIN)
LOW SUPPLY CURRENT - 6µA (TYP)
GUARANTEED RST/RST ASSERTION
DOWN TO V
OPERATING TEMPERATURE:
–40°C to 85°C (Industrial Grade)
LEAD-FREE, SMALL SOT23 and SOT143
PACKAGE
Push-pull RST Output (STM809/811)
Push-pull RST Output (STM810/812)
Active-
RESET
Low
CC
= 1.0V
Active-
RESET
High
Manual
RESET
Input
SOT143-4
SOT143-4
Package
SOT23-3
SOT23-3
Figure 1. Packages
STM809, STM810
STM811, STM812
SOT143-4 (W1)
SOT23-3 (WX)
Reset Circuit
1/18

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STM811S Summary of contents

Page 1

FEATURES SUMMARY PRECISION MONITORING OF 3V, 3.3V, and 5V SUPPLY VOLTAGES TWO OUTPUT CONFIGURATIONS – Push-pull RST Output (STM809/811) – Push-pull RST Output (STM810/812) 140ms RESET PULSE WIDTH (MIN) LOW SUPPLY CURRENT - 6µA (TYP) GUARANTEED RST/RST ASSERTION DOWN TO ...

Page 2

STM809/810/811/812 TABLE OF CONTENTS FEATURES SUMMARY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

Page 3

Table 8. Ordering Information Scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

Page 4

STM809/810/811/812 SUMMARY DESCRIPTION The STM809/810/811/812 MICROPROCESSOR RESET Circuits are low-power supervisory devic- es used to monitor power supplies. They perform a single function: asserting a reset signal whenev- er the V supply voltage drops below a preset CC Figure 2. ...

Page 5

Figure 7. Hardware Hookup V CC Push-button RESET Note: 1. STM809/811 only (RST for STM810/812) 2. STM811/812 only V CC STM809/810/ MCU 811/812 RESET (2) (1) MR RST Input V SS STM809/810/811/812 AI07836 5/18 ...

Page 6

STM809/810/811/812 OPERATION Reset Output The STM809/810/811/812 MICROPROCESSOR RESET CIRCUIT asserts a reset signal to the MCU whenever V goes below the reset thresh- CC old ( when the push-button reset input RST (MR) is taken low (see Figure ...

Page 7

TYPICAL OPERATING CHARACTERISTICS Note: Typical values are 3.0V for R versions. Figure 8. Supply Current vs. Temperature, L/M/R/S/T (no load) 8.0 6.0 4.0 2.0 0.0 –40 –20 Figure 9. Power-down Reset Delay vs. Temperature - V 140.00 ...

Page 8

STM809/810/811/812 Figure 10. Power-down Reset Delay vs. Temperature - V 100.00 80.00 60.00 40.00 20.00 0.00 –40 –20 Figure 11. Power-up t vs. Temperature rec 250.00 240.00 230.00 220.00 210.00 200.00 –40 –20 8/ – ...

Page 9

Figure 12. Normalized Reset Threshold vs. Temperature 1.003 1.002 1.001 1.000 0.999 0.998 0.997 0.996 0.995 0.994 0.993 –40 Figure 13. Max Transient Duration NOT Causing Reset Pulse vs. Reset Comparator Overdrive 700.00 600.00 500.00 400.00 300.00 200.00 100.00 0.00 ...

Page 10

... Note: 1. Reflow at peak temperature of 255°C to 260°C for < 30 seconds (total thermal budget not to exceed 180°C for between 90 to 150 seconds). 10/18 plied. Exposure to Absolute Maximum Rating con- ditions for extended periods may affect device reliability. Refer also to the STMicroelectronics SURE Program and other relevant quality docu- ments. Parameter Off) ...

Page 11

DC AND AC PARAMETERS This section summarizes the operating measure- ment conditions, and the DC and AC characteris- tics of the device. The parameters in the DC and AC characteristics Tables that follow, are derived from tests performed under the ...

Page 12

STM809/810/811/812 Table 5. DC and AC Characteristics Alter- Sym Description native V Operating Voltage Supply Current Input High Voltage Input Low Voltage IL RST Output Low Voltage V OL (2) ...

Page 13

PACKAGE MECHANICAL Figure 16. SOT23-3 – 3-lead Small Outline Transistor Package Outline 0. SOT23-3 Note: Drawing is not to scale. Table 6. SOT23-3 – 3-lead Small Outline ...

Page 14

STM809/810/811/812 Figure 17. SOT143-4 – 4-lead Small Outline Transistor Package Outline 0. SOT143-4 Note: Drawing is not to scale. Table 7. SOT143-4 – 4-lead Small Outline Transistor ...

Page 15

PART NUMBERING Table 8. Ordering Information Scheme Example: Device Type STM8XX Reset Threshold Voltage 4.50V to 4.75V RST 4.25V to 4.50V RST 3.00V to 3.15V RST S = ...

Page 16

... STM809/810/811/812 Table 9. Marking Description Part Number STM809L STM809M STM809T STM809S STM809R STM810L STM810M STM810T STM810S STM810R STM811L STM811M STM811T STM811S STM811R STM812L STM812M STM812T STM812S STM812R 16/18 Reset Threshold 4.63V Push-Pull RST 4.38V Push-Pull RST 3.08V Push-Pull RST 2.93V Push-Pull RST 2.63V Push-Pull RST 4 ...

Page 17

REVISION HISTORY Table 10. Document Revision History Date Version 02-Sep-03 1.0 03-Oct-03 1.1 16-Oct-03 1.2 17-Nov-03 1.3 04-Dec-03 2.0 09-Dec-03 2.1 10-Feb-04 3.0 19-Nov-04 4.0 Revision Details First Issue Update Operating Characteristics (Figure 8, 9, 10, 11, 12, 13) Update ...

Page 18

... No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics ...

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