STM6718 STMicroelectronics, STM6718 Datasheet - Page 4

• 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)

List of figures
List of figures
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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 V
Supply current vs. temperature (V
Supply current vs. temperature (V
Supply current vs. temperature (V
Supply current vs. temperature (V
Normalized V
Maximum V
Normalized V
Normalized V
Reset input threshold vs. temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
V
Reset input-to-reset output delay vs. temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
MR-to-reset output delay vs. temperature (V
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 . . . . . . . . . . . . . . 23
SOT23-6 – 6-lead small outline transistor package mechanical drawing . . . . . . . . . . . . . . 24
Carrier tape for SOT23-5L and SOT23-6L . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
CC1
-to-reset delay vs. temperature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
CC
CC
RST1
RST2
transient duration vs. reset threshold overdrive . . . . . . . . . . . . . . . . . . . . . 13
reset time-out period vs. temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
threshold vs. temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
threshold vs. temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
CC
= 0 (active-low, push-pull outputs). . . . . . . . . . . . . . . . . . . . . . 10
Doc ID 11469 Rev 8
CC1
CC1
CC1
CC1
STM6717/6718/6719/6720/STM6777/6778/6779/6780
= 5.5 V; V
= 3.6 V; V
= 3.0 V; V
= 2.0 V; V
CC1
CC2
CC2
CC2
CC2
= 3.6V) . . . . . . . . . . . . . . . . . . . . . . . . . . 16
= 3.6 V) . . . . . . . . . . . . . . . . . . . . . . 11
= 2.75 V) . . . . . . . . . . . . . . . . . . . . . 11
= 2.0 V) . . . . . . . . . . . . . . . . . . . . . . 12
= 1.0 V) . . . . . . . . . . . . . . . . . . . . . . 12