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STM6717/6718/6719/6720 STM6777/6778/6779/6780
Dual/triple ultra-low voltage supervisors with push-button reset (with delay option)
Features

Primary supply (VCC1) monitor. Fixed (factoryprogrammed) reset thresholds: 4.63V to 1.58V Secondary supply (VCC2) monitor (STM6717/18/19/20/77/78). Fixed (factory-programmed) reset thresholds: 3.08V to 0.79V Tertiary supply monitor (using externally adjustable rstin): 0.626V internal reference RST outputs (push-pull or open drain); state guaranteed IF VCC1 OR VCC2 0.8V Reset delay time (trec) on power-up: 210ms, 900ms (typ) Manual reset input (MR) Optional delayed manual reset input (MRC) with external capacitor (STM6777/78/79/80) Low supply current - 11A (typ), VCC1 = VCC2 = 3.6V Operating temperature: -40C to 85C (industrial grade) Device summary
Monitored voltages Part number STM6717 STM6718 STM6719 STM6720 STM6777 STM6778 STM6779 STM6780 VCC1 VCC2 RSTIN Manual reset input (MR) Delayed MR pin (MRC) Reset output (RST) Active-low (push-pull) Active-low (open drain) Package
SOT23-6 (WB) SOT23-5 (WY)
Table 1.
WY WY WB WB WB WB WB WB
December 2007
Rev 6
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www.st.com 1
Contents
STM6717/6718/6719/6720/STM6777/6778/6779/6780
Contents
1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.1 Pin descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.1.1 1.1.2 1.1.3 1.1.4 1.1.5 1.1.6 1.1.7 Active-low, push-pull reset output (RST) - STM6718/20/78/80 . . . . . . . . 7 Active-low, open drain reset output (RST) - STM6717/19/77/79 . . . . . . . 7 Push-button reset input (MR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Manual reset delay input (MRC) - STM6777/78/79/80) . . . . . . . . . . . . . . 8 Primary supply voltage monitoring input (VCC1) . . . . . . . . . . . . . . . . . . . 8 Secondary supply voltage monitoring input (VCC2) . . . . . . . . . . . . . . . . . 8 Adjustable reset comparator input (RSTIN; STM6719/20/79/80) . . . . . . 8
2
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.1 Applications information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3 4 5 6 7 8
Typical operating characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Maximum rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 DC and AC parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Part numbering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
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STM6717/6718/6719/6720/STM6777/6778/6779/6780
List of tables
List of tables
Table 1. Table 2. Table 3. Table 4. Table 5. Table 6. Table 7. Table 8. Table 9. Table 10. Table 11. Table 12. Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Signal names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Pin functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Operating and AC measurement conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 DC and AC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 tMLMH minimum pulse width . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 SOT23-5 - 5-lead small outline transistor package mechanical data. . . . . . . . . . . . . . . . . 23 SOT23-6 - 6-lead small outline transistor package mechanical data. . . . . . . . . . . . . . . . . 24 Ordering information scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Marking description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
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List of figures
STM6717/6718/6719/6720/STM6777/6778/6779/6780
List of figures
Figure 1. Figure 2. Figure 3. Figure 4. Figure 5. Figure 6. Figure 7. Figure 8. Figure 9. Figure 10. Figure 11. Figure 12. Figure 13. Figure 14. Figure 15. Figure 16. Figure 17. Figure 18. Figure 19. Figure 20. Figure 21. Figure 22. Figure 23. Figure 24. Figure 25. Figure 26. Figure 27. Figure 28. Figure 29. Logic diagram (STM6717/18) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Logic diagram (STM6777/78) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Logic diagram (STM6719/20) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Logic diagram (STM6779/80) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 STM6717/18 SOT23-5 connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 STM6777/78 SOT23-6 connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 STM6719/20 SOT23-6 connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 STM6779/80 SOT23-6 connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Hardware hookup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 STM67xx interface to processor with bi-directional reset pins . . . . . . . . . . . . . . . . . . . . . . 10 Ensuring RST valid to VCC = 0 (active-low, push-pull outputs). . . . . . . . . . . . . . . . . . . . . . 10 Supply current vs. temperature (VCC1 = 5.5V; VCC2 = 3.6V) . . . . . . . . . . . . . . . . . . . . . . . 11 Supply current vs. temperature (VCC1 = 3.6V; VCC2 = 2.75V) . . . . . . . . . . . . . . . . . . . . . . 11 Supply current vs. temperature (VCC1 = 3.0V; VCC2 = 2.0V) . . . . . . . . . . . . . . . . . . . . . . . 12 Supply current vs. temperature (VCC1 = 2.0V; VCC2 = 1.0V) . . . . . . . . . . . . . . . . . . . . . . . 12 Normalized VCC reset time-out period vs. temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Maximum VCC transient duration vs. reset threshold overdrive . . . . . . . . . . . . . . . . . . . . . 13 Normalized VRST1 threshold vs. temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Normalized VRST2 threshold vs. temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Reset input threshold vs. temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 VCC1-to-reset delay vs. temperature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Reset input-to-reset output delay vs. temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 MR-to-reset output delay vs. temperature (VCC1 = 3.6V) . . . . . . . . . . . . . . . . . . . . . . . . . . 16 AC testing input/output waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 MR timing waveform (STM6717/18/19/20) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 MR timing waveform (STM6777/78/79/80) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 SOT23-5 - 5-lead small outline transistor package mechanical drawing . . . . . . . . . . . . . . 22 SOT23-6 - 6-lead small outline transistor package mechanical drawing . . . . . . . . . . . . . . 23
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STM6717/6718/6719/6720/STM6777/6778/6779/6780
Description
1
Description
The STM6717/18/19/20 and STM6777/78/79/80 supervisors are a family of low voltage/low supply current processor (Micro or DSP) supervisors, designed to monitor two (or three) system power supply voltages. They are targeted at applications such as Set-Top Boxes (STBs), portable, battery-powered systems, networking, and communication systems. All device options have a push-button-type manual reset input (MR). The STM6777/78/79/80 also includes an option which enables the user to delay the start of the Manual Reset process from 6s (MRC pin left open) or more with external capacitor. The delay is implemented by connecting the appropriately sized capacitor between the MRC pin and VSS (typical 4s delay with a 3.3F capacitor, see Table 7 on page 21). Two of the three supplies monitored (VCC1 and VCC2) have fixed (customer-selectable, factory-trimmed) thresholds (VRST1 and VRST2). The third voltage is monitored using an externally adjustable RSTIN threshold (0.626V internal reference). If any of the three monitored voltages drop below its factory-trimmed or adjustable thresholds, or if MR is asserted to logic low, a RST is asserted (driven low). Once asserted, RST is maintained at Low for a minimum delay period (trec) after ALL supplies rise above their respective thresholds and MR returns to High. These devices are guaranteed to be in the correct reset output logic state when VCC1 and/or VCC2 is greater than 0.8V. These devices are available in a standard 5-pin or 6-pin SOT23 packages (see Table 1 on page 1).
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Description
STM6717/6718/6719/6720/STM6777/6778/6779/6780
Figure 1.
Logic diagram (STM6717/18)
VCC2 VCC1
Figure 2.
Logic diagram (STM6777/78)
VCC2 VCC1
MRC MR STM6717 STM6718 RST MR STM6777 STM6778 RST
VSS
AI10413
VSS
AI10415
Figure 3.
Logic diagram (STM6719/20)
VCC2 VCC1
Figure 4.
Logic diagram (STM6779/80)
VCC
RSTIN RSTIN MR STM6719 STM6720 RST MRC MR STM6779 STM6780 RST
VSS
AI10414
VSS
AI10416
Table 2.
MR MRC RST VCC1 VCC2 RSTIN VSS
Signal names
Push-button reset input Manual reset delay input Active-low reset output Primary supply voltage input Secondary supply voltage input Adjustable reset comparator input Ground
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STM6717/6718/6719/6720/STM6777/6778/6779/6780
Description
Figure 5.
STM6717/18 SOT23-5 connections
Figure 6.
STM6777/78 SOT23-6 connections
RST VSS MR
1 2 3
5
VCC1
RST VSS
1 2 3
6 5 4
VCC1 MRC VCC2
AI10418
4
VCC2
AI10417
MR
Figure 7.
STM6719/20 SOT23-6 connections
Figure 8.
STM6779/80 SOT23-6 connections
RST VSS MR
1 2 3
6 5 4
VCC1 RSTIN VCC2
AI10419
RST VSS MR
1 2 3
6 5 4
VCC1 RSTIN MRC
AI10420
1.1
1.1.1
Pin descriptions
Active-low, push-pull reset output (RST) - STM6718/20/78/80
The RST pin is driven low and stays low whenever VCC1 or VCC2 or RSTIN falls below its factory-trimmed or adjustable reset threshold or when MR goes to logic low. It remains low for trec after ALL supply voltages being monitored rise above their reset thresholds and MR goes from low to high. (Push-pull outputs are referenced to VCC1.)
1.1.2
Active-low, open drain reset output (RST) - STM6717/19/77/79
The RST pin is driven low and stays low whenever VCC1 or VCC2 or RSTIN falls below its factory-trimmed or adjustable reset threshold or when MR goes to logic low. It remains low for trec after ALL supply voltages being monitored rise above their reset thresholds and MR goes from low to high. Connect an external pull-up resistor to VCC1. A 10k pull-up resistor should be sufficient for most applications.
1.1.3
Push-button reset input (MR)
When MR goes low the RST output is driven low. RST remains low as long as MR is low and for trec after MR returns to high. This active-low input has an internal 50k pull-up resistor to
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Description
STM6717/6718/6719/6720/STM6777/6778/6779/6780 VCC1. It can be driven from a TTL or CMOS logic line, or with open drain/collector outputs, or connected to VSS through a switch. If unused, leave this pin open or connect it to VCC1. Connect a normally open momentary switch from MR to VSS; external debounce circuitry is not required. (If MR is driven from long cables or if the device is used in noisy environments, connecting a 0.1F capacitor from MR to VSS provides additional noise immunity.
1.1.4
Manual reset delay input (MRC) - STM6777/78/79/80)
This pin is either left open or connected to VSS via a capacitor. By selecting the appropriate capacitor, the manual reset process, initiated by pressing the push-button Manual Reset Input, can be delayed by any value from 6s or more (see Table 7 on page 21).
1.1.5
Primary supply voltage monitoring input (VCC1)
It also is the input for the primary reset threshold monitor. Available fixed (customerselectable, factory-programmed) reset thresholds include 4.63V to 1.58V.
1.1.6
Secondary supply voltage monitoring input (VCC2)
This function is available on the STM6717/18/19/20/77/78. Fixed (customer-selectable, factory-programmed) reset thresholds include 3.08V to 0.79V.
1.1.7
Adjustable reset comparator input (RSTIN; STM6719/20/79/80)
This is a high impedance input. RST is driven low when the voltage at the RSTIN pin falls below 0.626V (internal reference voltage at this comparator). The monitored voltage reset threshold is set with an external resistor-divider network. Table 3. Pin functions
Pin STM6717 STM6718 1 3 - 5 4 - 2 STM6719 STM6720 1 3 - 6 4 5 2 STM6777 STM6778 1 3 5 6 4 - 2 STM6779 STM6780 1 3 4 6 - 5 2 RST MR MRC VCC1 VCC2 Active-low reset output Push-button reset input Manual reset delay input Primary supply voltage input Secondary supply voltage input Name Function
RSTIN Adjustable reset comparator input VSS Ground
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STM6717/6718/6719/6720/STM6777/6778/6779/6780 Figure 9. Block diagram
Description
VCC1 VRST1 VCC2(1) VRST2 (2) RSTIN VCC1 VREF/2 = 0.626 COMPARE COMPARE COMPARE
trec Generator
RST
MR (3) MRC
Logic
AI10421
1. VCC2 input is available on STM6717/18/19/20/77/78. 2. RSTIN available only on STM6719/20/79/80. 3. MRC available only on STM6777/78/79/80.
Figure 10. Hardware hookup
From DC/DC Converter VCC2(1) VCC1 VCC1 VCC3 = (626.5mV) R1 + R2 R2
(
)
0.1F STM67xx VCC2
VCC3 0.1F R1 RSTIN(2) R2 MR Push-button Switch C MRC(3) VSS RST RST (To Processor Reset)
AI10422
1. VCC2 is available only on STM6717/18/19/20/77/78. 2. RSTIN available only on STM6719/20/79/80. 3. MRC available only on STM6777/78/79/80.
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Operation
STM6717/6718/6719/6720/STM6777/6778/6779/6780
2
2.1
Operation
Applications information
1. Interfacing to processors with bi-directional reset pins Most processors with bi-directional reset pins can interface directly to the open drain RST outputs (STM6717/19/77/79). Systems simultaneously requiring a push-pull RST output and a bi-directional reset interface can be in logic contention. To prevent this contention, connect a 4.7k resistor between RST and the processor's reset I/O as shown in Figure 11. 2. Ensuring a Valid RST Output Down to VCC = 0V The STM67xx Supervisors are guaranteed to be in the correct RST output logic state when VCC1 and/or VCC2 is greater than 0.8V. In applications which require valid reset levels down to VCC = 0, a pull-down resistor to active-low outputs (push-pull only, see Figure 12) will ensure that the reset line is valid while the reset output can no longer sink or source current. This scheme does NOT work with the open drain outputs of the STM6717/19/77/79. The resistor value used is not critical, but it must be large enough not to load the reset output when VCC is above the reset threshold. For most applications, 100k is adequate. Figure 11. STM67xx interface to processor with bi-directional reset pins
VCC2 VCC1
STM67xx To other system components
Processor
VCC1 VCC2
RST 4.7k VSS
RESET VSS
AI10425
Figure 12. Ensuring RST valid to VCC = 0 (active-low, push-pull outputs)
STM67xx VCC1
VCC1 RST VSS R1
AI10426
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STM6717/6718/6719/6720/STM6777/6778/6779/6780
Typical operating characteristics
3
Note:
Typical operating characteristics
Typical values are at TA = 25C unless otherwise noted. Figure 13. Supply current vs. temperature (VCC1 = 5.5V; VCC2 = 3.6V)
18 16
Supply Current (A)
14 12 10 8 6 4 2 0 -40 ICC2 ITOTAL ICC1
-20
0
20
40
60
80
AI11843
Temperature (C)
Figure 14. Supply current vs. temperature (VCC1 = 3.6V; VCC2 = 2.75V)
18 16 14
Supply Current (A)
12 10 8 6 4 2 0 -40 ICC2 ITOTAL ICC1
-20
0
20 40 Temperature (C)
60
80
AI11844
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Typical operating characteristics
STM6717/6718/6719/6720/STM6777/6778/6779/6780
Figure 15. Supply current vs. temperature (VCC1 = 3.0V; VCC2 = 2.0V)
18 16
Supply Current (A)
14 12 10 8 6 4 2 ICC2 0 -40 -20 0 20 40 60 80
AI11845
ITOTAL
ICC1
Temperature (C)
Figure 16. Supply current vs. temperature (VCC1 = 2.0V; VCC2 = 1.0V)
18 16
Supply Current (A)
14 12 10 8 6 ICC1 4 2 0 -40 ICC2 -20 0 20 40 60 80
AI11846
ITOTAL
Temperature (C)
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STM6717/6718/6719/6720/STM6777/6778/6779/6780
Typical operating characteristics
Figure 17. Normalized VCC reset time-out period vs. temperature
1.07
1.05
Reset Period
1.03
1.01
0.99
0.97 -40
-20
0
20
40
60
80
AI11847
Temperature (C)
Figure 18. Maximum VCC transient duration vs. reset threshold overdrive
Maximum VCC Transient Duration (s)
1000
100
10
1 1 10 100 1000
AI11848
Reset Threshold Overdrive (mV)
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Typical operating characteristics
STM6717/6718/6719/6720/STM6777/6778/6779/6780
Figure 19. Normalized VRST1 threshold vs. temperature
1.004
VRST1 Reset Threshold
1.002
1.000
0.998
0.996 -40
-20
0
20
40
60
80
AI11849
Temperature (C)
Figure 20. Normalized VRST2 threshold vs. temperature
1.004
VRST2 Reset Threshold
1.002
1.000
0.998
0.996 -40
-20
0
20
40
60
80
AI11850
Temperature (C)
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STM6717/6718/6719/6720/STM6777/6778/6779/6780 Figure 21. Reset input threshold vs. temperature
630
Typical operating characteristics
Reset Input Threshold (mV)
629
628
627
626
625
624 -40 -20 0 20 40 60 80 AI11851
Temperature (C)
Figure 22. VCC1-to-reset delay vs. temperature
48
VCC1-to-Reset Delay (s)
44
40
36
32
28 -40 -20 0 20 40 60 80
AI11852
Temperature (C)
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Typical operating characteristics
STM6717/6718/6719/6720/STM6777/6778/6779/6780
Figure 23. Reset input-to-reset output delay vs. temperature
29.0
RSTIN-to-Reset Output Delay (s)
28.5 28.0 27.5 27.0 26.5 26.0 25.5 25.0 -40 -20 0 20 40 60 80
AI11853
Temperature (C)
Figure 24. MR-to-reset output delay vs. temperature (VCC1 = 3.6V)
500
MR-to-Reset Output Delay (ns)
480
460
440
420
400 -40 -20 0 20 40 60 80
AI11854
Temperature (C)
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STM6717/6718/6719/6720/STM6777/6778/6779/6780
Maximum rating
4
Maximum rating
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 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 4.
Symbol TSTG TSLD(1) VIO VCC1, VCC2 IIO PD
Absolute maximum ratings
Parameter Storage temperature (VCC Off) Lead solder temperature for 10 seconds Input or output voltage Supply voltage Input or output current (all pins) SOT23-5 Power dissipation SOT23-6 675 mW Value -55 to 150 260 -0.3 to VCC1 + 0.3 -0.3 to VCC2 + 0.3 -0.3 to 7.0 20 654 Unit C C V V V mA mW
Note:
Reflow at peak temperature of 255C to 260C for < 30 seconds (total thermal budget not to exceed 180C for between 90 to 150 seconds).
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DC and AC parameters
STM6717/6718/6719/6720/STM6777/6778/6779/6780
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 performed under the Measurement Conditions summarized in Table 5: Operating and AC measurement conditions. Designers should check that the operating conditions in their circuit match the operating conditions when relying on the quoted parameters.
Table 5.
Operating and AC measurement conditions
Parameter STM67xx 0.8 to 5.5 -40 to 85 5 0.2 to 0.8VCC 0.3 to 0.7VCC Unit V C ns V V
VCC supply voltage Ambient operating temperature (TA) Input rise and fall times Input pulse voltages Input and output timing ref. voltages
Figure 25. AC testing input/output waveforms
0.8VCC
0.7VCC 0.3VCC
AI02568
0.2VCC
Figure 26. MR timing waveform (STM6717/18/19/20)
tMLMH MR tMLRL RST trec
AI10423a
Figure 27. MR timing waveform (STM6777/78/79/80)
tMLMH MR tMLRL RST trec
AI10424c
(1)
1. By connecting a certain capacitor between the MRC pin and VSS, the RST can be delayed from 6s or more (tMLMH, see Table 7 on page 21).
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STM6717/6718/6719/6720/STM6777/6778/6779/6780 Table 6.
Sym VCC ICC1
DC and AC parameters
DC and AC characteristics
Alternative Description Operating voltage VCC1 supply current VCC1 < 5.5V, all I/O pins open VCC1 < 3.6V, all I/O pins open VCC2 < 3.6V, all I/O pins open VCC2 < 2.75V, all I/O pins open 0V = VIN = VCC VCC1 > VRST1, VCC2 > VRST2; RST not asserted VCC1 or VCC2 0.8V, ISINK = 1A, RST asserted VCC1 or VCC2 1.0V, ISINK = 50A, RST asserted -1 Test condition(1) Min 0.8 12 8 3 2.5 Typ Max 5.5 35 23 9 7 +1 0.5 0.3 0.3 0.3 0.3 0.4 0.8VCC1 0.8VCC1 0.8VCC1 Unit V A A A A A A V V V V V V V V
ICC2 ILI
(2)
VCC2 supply current Input leakage current Open drain RST output leakage current
ILO
VOL
Output low voltage (RST; push-pull or open drain)
VCC1 or VCC2 1.2V, ISINK = 100A, RST asserted VCC1 or VCC2 2.7V, ISINK = 1.2mA, RST asserted VCC1 or VCC2 4.5V, ISINK = 3.2mA, RST asserted VCC1 1.8V, ISOURCE = 200A, RST not asserted
VOH
Output high voltage (RST; push-pull only)
VCC1 2.7V, ISOURCE = 500A, RST not asserted VCC1 4.5V, ISOURCE = 800A, RST not asserted
tR(3) Reset thresholds
Push-pull RST rise time (STM6718/20/78/80)
Rise time measured from 10% to 90% of VCC; CL = 5pF, VCC = 3.3V
5
25
ns
L (falling) M (falling) T (falling) S (falling) VRST(4) VTH1 VCC1 reset threshold R (falling) Z (falling) Y (falling) W (falling) V (falling)
4.500 4.250 3.000 2.850 2.550 2.250 2.125 1.620 1.530
4.625 4.750 4.375 4.500 3.075 3.150 2.925 3.000 2.625 2.700 2.313 2.375 2.188 2.250 1.665 1.710 1.575 1.620
V V V V V V V V V
19/29
DC and AC parameters Table 6.
Sym
STM6717/6718/6719/6720/STM6777/6778/6779/6780
DC and AC characteristics (continued)
Alternative Description Test condition(1) T (falling) S (falling) R (falling) Z (falling) Y (falling) W (falling) V (falling) Min 3.000 2.850 2.550 2.250 2.125 1.620 1.530 1.350 1.275 1.080 1.020 0.895 0.845 0.810 0.765 Typ Max Unit V V V V V V V V V V V V V V V % s s 280 ms G 600 900 1200
3.075 3.150 2.925 3.000 2.625 2.700 2.313 2.375 2.188 2.250 1.665 1.710 1.575 1.620 1.388 1.425 1.313 1.350 1.110 1.140 1.050 1.080 0.925 0.955 0.875 0.905 0.833 0.855 0.788 0.810 0.5 20 20
VRST2
(4)
VTH2
VCC2 reset threshold
I (falling) H (falling) G (falling) F (falling) K (falling) J (falling) E (falling) D (falling)
VHYST
Reset threshold hysteresis
Referenced to VRST typical VCC1 = (VRST1 + 100mV) to (VRST - 100mV) VCC2 = (VRST2 + 75mV) to (VRST2 - 75mV) blank 140
tRD
VCC to RST delay
210
trec
tRP
RST pulse width
Adjustable reset comparator input (STM6719/20/79/80) VRSTIN IRSTIN RSTIN input threshold RSTIN input current RSTIN hysteresis tRSTIND RSTIN to RST output delay VRSTIN to (VRSTIN - 30mV) 611 -25 3 22 626.5 642 +25 mV nA mV s
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STM6717/6718/6719/6720/STM6777/6778/6779/6780 Table 6.
Sym
DC and AC parameters
DC and AC characteristics (continued)
Alternative Description Test condition(1) Min Typ Max Unit
Manual (push-button) reset input VIL VIH MR minimum pulse width (STM6717/18/19/20) tMLMH tMR MR minimum pulse width (STM6777/78/79/80) MR to RST output delay MR glitch immunity (STM6717/18/19/20) MR pull-up resistance 25 MRC connected via capacitor to VSS(5) 0.3VC MR input voltage 0.7VCC1 1 6 200 100 50 80
C1
V V s s ns ns k
tMLRL
tMRD
1. Valid for ambient operating temperature: TA = -40 to 85C; VCC1 = 0.8 to 5.5V and VCC2 = 0.8 to 3.6V (except where noted). 2. Input leakage for the MRC pin is not tested. 3. Guaranteed by design. 4. The leakage current measured on the RST pin is tested with the reset de-asserted (output high impedance). 5. Selecting the appropriate external capacitor (preferably less than 100pF) allows systems designers to vary the minimum delay from 6s (MRC pin left open) or more (see Table 7).
Table 7.
VCC1
tMLMH minimum pulse width
Capacitor value(1) 100pF 0.1F 120ms 122ms 125ms 129ms 130ms 2.2F 2.6s 2.7s 2.7s 2.8s 2.8s 3.3F 4.0s 4.0s 4.1s 4.2s 4.3s 4.7F 5.6s 5.8s 5.9s 6.0s 6.1s 6.8F 8.2s 8.3s 8.5s 8.7s 8.8s
1.6V 2.0V 3.0V 4.0V 5.0V
1. At 25C (typical)
120s 122s 125s 128s 130s
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Package mechanical data
STM6717/6718/6719/6720/STM6777/6778/6779/6780
6
Package mechanical data
In order to meet environmental requirements, ST offers these devices in ECOPACK(R) packages. These 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 compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK is an ST trademark. ECOPACK specifications are available at: www.st.com. Figure 28. SOT23-5 - 5-lead small outline transistor package mechanical drawing
E A1
1
e e1 5x b 5x
0.20
M
D
CAB
A
C 0.10 C
A2 A
Datum A 0.20
C
B
L E1
SOT23-5b
Note:
Drawing is not to scale.
22/29
STM6717/6718/6719/6720/STM6777/6778/6779/6780 Table 8.
Symb Typ A A1 A2 b C D E E1 e e1 L Q N - - 1.15 - - 2.90 2.80 1.60 0.95 1.90 0.45 4 Min - - 0.90 0.30 0.08 - - - - - 0.30 0 5 Max 1.45 0.15 1.30 0.50 0.22 - - - - - 0.60 8 Typ - - 0.045 - - 0.114 0.110 0.063 0.037 0.075 0.018 4
Package mechanical data
SOT23-5 - 5-lead small outline transistor package mechanical data
mm inches Min - - 0.035 0.012 0.003 - - - - - 0.012 0 5 Max 0.057 0.006 0.051 0.020 0.009 - - - - - 0.024 8
Note:
Dimensions per JEDEC SOT/SOP Product Outline MO-178C, variation AA Figure 29. SOT23-6 - 6-lead small outline transistor package mechanical drawing
E A1
1
e e1 D
6x b
0.10
M
6x
CAB A C 0.10 C
A2 A
Datum A 0.20
C
B
L E1
SOT23-6
Note:
Drawing is not to scale.
23/29
Package mechanical data Table 9.
Symb Typ A A1 A2 b C D E E1 e e1 L Q N - - 1.15 - - 2.90 2.80 1.60 0.95 1.90 0.45 4 Min - - 0.90 0.30 0.08 - - - - - 0.30 0 6
STM6717/6718/6719/6720/STM6777/6778/6779/6780
SOT23-6 - 6-lead small outline transistor package mechanical data
mm Max 1.45 0.15 1.30 0.50 0.22 - - - - - 0.60 8 Typ - - 0.045 - - 0.114 0.110 0.063 0.037 0.075 0.018 4 inches Min - - 0.035 0.012 0.003 - - - - - 0.012 0 6 Max 0.057 0.006 0.051 0.020 0.009 - - - - - 0.024 8
Note:
Dimensions per JEDEC SOT/SOP product outline MO-178C variation AA
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STM6717/6718/6719/6720/STM6777/6778/6779/6780
Part numbering
7
Table 10.
Example: Device type STM67xx
Part numbering
Ordering information scheme
STM67xx LT WY 6 E
Reset thresholds (VRST1 and VRST2) for VCC1 and VCC2 STM6717/18/19/20/77/78 (VRST1 and VRST2) STM6779/80 (VRST1 only) Suffix VRST1 VRST2 Suffix VRST1 LT 4.625 3.075 L-(1) 4.625 MS 4.375 2.925 T-(1) 3.075 MR 4.375 2.625 S-(1) 2.925 TZ(1) 3.075 2.313 Y-(1) 2.188 TW(1) 3.075 1.665 V-(1) 1.575 TI 3.075 1.388 R- 2.625 TG(1) 3.075 1.110 Z- 2.313 TK 3.075 0.925 TE 3.075 0.833 SY(1) 2.925 2.188 SV(1) 2.925 1.575 SH(2) 2.925 1.313 SF(1) 2.925 1.050 2.925 0.875 SJ(3) SD(3) 2.925 0.788 YV 2.188 1.575 YH 2.188 1.313 YF 2.188 1.050 YJ 2.188 0.875 YD 2.188 0.788 VH 1.575 1.313 VF 1.575 1.050 VJ 1.575 0.875 VD 1.575 0.788 Reset pulse width blank: trec = 140ms to 280ms G: trec = 600ms to 1200ms Package WY = SOT23-5 WB = SOT23-6 Temperature range 6 = -40 to 85C Shipping method E = ECOPACK(R) package, tubes F = ECOPACK(R) package, tape & reel
1. These are standard versions and are typically held in stock. A non-standard version may require a higher minimum volumes, and/or longer delivery times. For other options, or for more information on any aspect of this device, please contact the ST Sales Office nearest you 2. Available in STM6719 version only. 3. Available in STM6717 version only.
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Part numbering Table 11. Marking description
VRST1 threshold (V) 2.925 2.925 2.925 3.075 3.075 3.075 2.925 2.925 3.075 2.925 3.075 3.075 2.925 2.925 3.075 2.925 3.075 2.925 3.075 2.925 2.925 3.075 2.925 3.075 3.075 2.925 2.925 3.075 2.925 3.075 3.075 2.925 2.925 3.075 2.925
STM6717/6718/6719/6720/STM6777/6778/6779/6780
Part number STM6717SD STM6717SJ STM6717SF STM6717TG STM6717TGG STM6717TW STM6717SV STM6717SY STM6717TZ STM6718SF STM6718TG STM6718TW STM6718SV STM6718SY STM6718TZ STM6719SF STM6719TG STM6719SH STM6719TW STM6719SV STM6719SY STM6719TZ STM6720SF STM6720TG STM6720TW STM6720SV STM6720SY STM6720TZ STM6777SF STM6777TG STM6777TW STM6777SV STM6777SY STM6777TZ STM6778SF
VRST1 threshold (V) 0.788 0.875 1.050 1.110 1.110 1.665 1.575 2.188 2.313 1.050 1.110 1.665 1.575 2.188 2.313 1.050 1.110 1.313 1.665 1.575 2.188 2.313 1.050 1.110 1.665 1.575 2.188 2.313 1.050 1.110 1.665 1.575 2.188 2.313 1.050
Topside marking 7SD1 7SJ1 7SF1 7TG1 7TG9 7TW1 7SV1 7SY1 7TZ1 7SF2 7TG2 7TW2 7SV2 7SY2 7TZ2 7SF3 7TG3 7SH3 7TW3 7SV3 7SY3 7TZ3 7SF4 7TG4 7TW4 7SV4 7SY4 7TZ4 7SF5 7TG5 7TW5 7SV5 7SY5 7TZ5 7SF6
Bottomside marking PYWW PYWW PYWW PYWW PYWW PYWW PYWW PYWW PYWW PYWW PYWW PYWW PYWW PYWW PYWW PYWW PYWW PYWW PYWW PYWW PYWW PYWW PYWW PYWW PYWW PYWW PYWW PYWW PYWW PYWW PYWW PYWW PYWW PYWW PYWW
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STM6717/6718/6719/6720/STM6777/6778/6779/6780 Table 11. Marking description (continued)
VRST1 threshold (V) 3.075 3.075 2.925 2.925 3.075 4.625 3.075 2.925 2.188 1.575 4.625 3.075 2.925 2.188 1.575 VRST1 threshold (V) 1.110 1.665 1.575 2.188 2.313 Topside marking 7TG6 7TW6 7SV6 7SY6 7TZ6 7Lx7 7Tx7 7Sx7 7Yx7 7Vx7 7Lx8 7Tx8 7Sx8 7Yx8 7Vx8
Part numbering
Part number STM6778TG STM6778TW STM6778SV STM6778SY STM6778TZ STM6779L STM6779T STM6779S STM6779Y STM6779V STM6780L STM6780T STM6780S STM6780Y STM6780V
Bottomside marking PYWW PYWW PYWW PYWW PYWW PYWW PYWW PYWW PYWW PYWW PYWW PYWW PYWW PYWW PYWW
Note:
For Topside marking, "7" is the family number, followed by the VRST1 threshold, VRST2 threshold and device number (1,9 = STM6717, 2 = 6718, 3 = 6719, 4 = 6720, 5 = 6777, 6 = 6778, 7 = 6779, 8 = 6780). For Bottomside marking, "P" = assembly site, "Y" = 1-digit year, and "WW" = 2-digit work week.
27/29
Revision history
STM6717/6718/6719/6720/STM6777/6778/6779/6780
8
Revision history
Table 12.
Date 18-Oct-2004 25-Oct-2004 14-Jan-2005 09-Feb-2005 08-Apr-2005 28-Jul-2005 13-Sep-2005 07-Oct-2005 07-Feb-2007 12-Jun-2007 05-Dec-2007
Document revision history
Version 1.0 1.1 1.2 1.3 1.4 1.5 2.0 3.0 4.0 5.0 6.0 First draft Descriptive text, sales types (Table 10) Update characteristics, pin functions (Table 2) Update characteristics (Figure 9; Table 3) Update characteristics and mechanical dimensions; add table (Figure 9, 10, 27, 28, 29; Table 4, 6, 10, 8, 9) Update characteristics, reset delay (Figure 10, 27; Table 4, 6, 7, 10) Add operating characteristics; update timings, document status, Leadfree text (Figure Figure 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 26, 27; Table 10) Marked STM6779/6780 as availability request parts (Table 1, 10) Updated STM6779/6780 availability (cover page, Table 1, 10) Updated Table 10, added Table 11: Marking description. Updated cover page, Table 6, 10, and 11. Revision details
28/29
STM6717/6718/6719/6720/STM6777/6778/6779/6780
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