stm1001t STMicroelectronics, stm1001t Datasheet

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stm1001t

Manufacturer Part Number
stm1001t
Description
Reset Circuit
Manufacturer
STMicroelectronics
Datasheet

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FEATURES SUMMARY
Figure 1. Logic Diagram
September 2005
PRECISION MONITORING OF 3V, 3.3V, and
5V SUPPLY VOLTAGES
OPEN DRAIN RST OUTPUT
140ms RESET PULSE WIDTH (min)
LOW SUPPLY CURRENT - 6µA (typ)
GUARANTEED RST ASSERTION DOWN TO
V
OPERATING TEMPERATURE:
–40°C to 85°C (Industrial Grade)
LEAD-FREE, SMALL SOT23 PACKAGE
CC
= 1.0V
V
V
STM1001
CC
SS
AI09116
RST
Figure 2. Package
Table 1. Signal Names
Figure 3. SOT23-3 Connections
V
RST
V
SS
CC
RST
V
CC
Ground
Active-Low RESET Output (Open
Drain)
Supply Voltage
SOT23-3 (WX)
1
2
3
Reset Circuit
STM1001
AI09117
V
SS
Rev 5.0
1/14

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stm1001t Summary of contents

Page 1

FEATURES SUMMARY PRECISION MONITORING OF 3V, 3.3V, and 5V SUPPLY VOLTAGES OPEN DRAIN RST OUTPUT 140ms RESET PULSE WIDTH (min) LOW SUPPLY CURRENT - 6µA (typ) GUARANTEED RST ASSERTION DOWN 1.0V CC OPERATING TEMPERATURE: –40°C to 85°C ...

Page 2

STM1001 TABLE OF CONTENTS FEATURES SUMMARY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

Page 3

SUMMARY DESCRIPTION The STM1001 MICROPROCESSOR RESET Cir- cuit is a low-power supervisory device used to monitor power supplies. It performs a single func- tion: asserting a reset signal whenever the V Figure 4. Block Diagram RST AI09118 ...

Page 4

STM1001 OPERATION Reset Output The STM1001 MICROPROCESSOR RESET CIRCUIT asserts a reset signal to the MCU when- ever V goes below the reset threshold (V CC RST is guaranteed valid down to V 70°C). During power-up, once V CC threshold ...

Page 5

TYPICAL OPERATING CHARACTERISTICS Note: Typical values are 3.0V for R versions. Figure 6. Supply Current vs. Temperature, L/M/R/S/T (no load) 8.0 6.0 4.0 2.0 0.0 –40 –20 Figure 7. Power-down Reset Delay vs. Temperature - V 140.00 ...

Page 6

STM1001 Figure 8. Power-down Reset Delay vs. Temperature - V 100.00 80.00 60.00 40.00 20.00 0.00 –40 –20 Figure 9. Power-up t vs. Temperature rec 250.00 240.00 230.00 220.00 210.00 200.00 –40 –20 6/ – ...

Page 7

Figure 10. 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 11. 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 8

... Input and Output Timing Ref. Voltages Figure 12. AC Testing Input/Output Waveforms 0.8V CC 0.2V CC 8/14 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) CC Conditions summarized in Table 3, Operating and AC Measurement Conditions ...

Page 9

... (min) CC RST I = 50µA; V > 1. 25°C STM1001L –40 to 85°C 25°C STM1001M –40 to 85°C 25°C STM1001T –40 to 85°C 25°C STM1001S –40 to 85°C 25°C STM1001R –40 to 85° 3. STM1001L/M CC RST to (V – RST STM1001R/S/T 100mV) = – ...

Page 10

STM1001 PACKAGE MECHANICAL In order to meet environmental requirements, ST offers these devices in ECOPACK packages have a Lead-free second level interconnect. The category of second Level Interconnect is marked on the package and on the inner box label, in ...

Page 11

Figure 13. SOT23-3 – 3-lead Small Outline Transistor Package Outline 0. SOT23-3 Note: Drawing is not to scale. Table 5. SOT23-3 – 3-lead Small Outline Transistor Package ...

Page 12

... F = ECOPACK Package, Tape & Reel For other options, or for more information on any aspect of this device, please contact the ST Sales Office nearest you. Table 7. Marking Description Part Number STM1001L STM1001M STM1001T STM1001S STM1001R Note: 1. Lowercase “x” indicates date code. 12/14 STM1001 Reset Threshold 4 ...

Page 13

REVISION HISTORY Table 8. Document Revision History Date Version 09-Dec-03 1.0 19-Feb-04 2.0 22-Mar-04 2.1 09-Apr-04 3.0 19-Nov-04 4.0 19-Sep-05 5.0 Revision Details First Edition Part number changed from STM6301 Update DC Characteristics (Table 4) Device promoted; reformatted; marking updated ...

Page 14

... 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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