STM6717TWWY6F Datasheet, PDF (9/30 Pages) STMicroelectronics – Dual/triple ultra-low voltage supervisors with push-button reset (with delay option)

STM6717/6718/6719/6720/STM6777/6778/6779/6780
Figure 9. Block diagram
Description
VCC1
VCC2(1)
RSTIN(2)
MR
MRC(3)
VRST1 COMPARE
VRST2 COMPARE
VCC1
VREF/2 = 0.626 COMPARE
Logic
1. V_CC2 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
trec
Generator
RST
AI10421
From DC/DC Converter
VCC2(1)
VCC1
( ) ^{VCC3 = (626.5mV)}
R1 + R2
R2
0.1µF
VCC1
STM67xx
VCC3
0.1µF
R1
R2
Push-button
Switch
VCC2
RSTIN(2) RST
MR
MRC(3)
VSS
C
1. V_CC2 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.
RST (To Processor Reset)
AI10422
Doc ID 11469 Rev 8
9/30