STM6718 STMicroelectronics, STM6718 Datasheet - Page 7

• Manufacturer Part Number: STM6718
• Description: Dual/triple ultra-low voltage supervisors with push-button reset (with delay option)
• Manufacturer: STMicroelectronics

Specifications of STM6718

• Primary Supply (vcc1) Monitor. Fixed (factory-programmed) Reset Thresholds: 4.63 V to 1.58 V
• Fixed (factory-programmed) Reset Thresholds: 3.08 V to 0.79 V
• Tertiary Supply Monitor (using Externally Adjustable Rstin): 0.626 V internal reference
• Reset Delay Time (trec) On Power-up: 13.2 ms, 210 ms, 900 ms (typ)
• Operating Temperature: –40 °C to 85 °C (industrial grade)

STM6717/6718/6719/6720/STM6777/6778/6779/6780
1.1
1.1.1
1.1.2
1.1.3
Figure 5.
Figure 7.
RST
RST
V
V
Pin descriptions
Active-low, push-pull reset output (RST) - STM6718/20/78/80
The RST pin is driven low and stays low whenever V
factory-trimmed or adjustable reset threshold or when MR goes to logic low. It remains low
for t
goes from low to high. (Push-pull outputs are referenced to V
Active-low, open drain reset output (RST) - STM6717/19/77/79
The RST pin is driven low and stays low whenever V
factory-trimmed or adjustable reset threshold or when MR goes to logic low. It remains low
for t
goes from low to high. Connect an external pull-up resistor to V
should be sufficient for most applications.
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 t
MR
MR
STM6717/18 SOT23-5 connections
STM6719/20 SOT23-6 connections
SS
SS
rec
rec
rec
after MR returns to high. This active-low input has an internal 50 kΩ pull-up resistor to
after ALL supply voltages being monitored rise above their reset thresholds and MR
after ALL supply voltages being monitored rise above their reset thresholds and MR
1
2
3
1
2
3
6
5
4
5
4
V
RSTIN
V
V
V
CC1
CC2
CC1
CC2
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Figure 6.
Figure 8.
RST
RST
V
V
MR
MR
SS
SS
CC1
CC1
STM6777/78 SOT23-6 connections
STM6779/80 SOT23-6 connections
or V
or V
1
2
3
1
2
3
CC2
CC1
CC2
CC1
.)
or RSTIN falls below its
or RSTIN falls below its
6
5
. A 10 kΩ pull-up resistor
4
6
5
4
V
RSTIN
MRC
V
MRC
V
CC1
CC1
CC2
Description
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