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STM690A Datasheet(PDF) 1 Page - STMicroelectronics

Part # STM690A
Description  5 V supervisor with battery switchover
Download  43 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STM690A Datasheet(HTML) 1 Page - STMicroelectronics

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August 2010
Doc ID 10522 Rev 10
1/43
1
STM690A, STM692A, STM703
STM704, STM802, STM805, STM817/8/9
5 V supervisor with battery switchover
Features
5 V operating voltage
NVRAM supervisor for external LPSRAM
Chip-enable gating (STM818 only) for external
LPSRAM (7 ns max prop delay)
RST and RST outputs
200 ms (typ) trec
Watchdog timer - 1.6 sec (typ)
Automatic battery switchover
Low battery supply current - 0.4 µA (typ)
Power-fail comparator (PFI/PFO)
Low supply current - 40 µA (typ)
Guaranteed RST (RST) assertion down to
VCC = 1.0 V
Operating temperature:
–40 °C to +85 °C (industrial grade)
RoHS compliance
– Lead-free components are compliant with
the RoHS directive
1.
Contact local ST sales office for availability.
8
1
TSSOP8 3 x 3 (DS)(1)
SO8 (M)
Table 1.
Device summary
Part number
Watchdog
input
Active-low
RST(1)
Active-
high RST
Manual
reset
input(1)
Battery
switch-
over
Power-fail
comparator
Chip-
enable
gating
Battery
freshness
seal
STM690A
✓✓
STM692A
✓✓
STM703
✓✓
STM704
✓✓
STM802L/M
✓✓
STM805L
✓✓
STM817L/M
✓✓
STM818L/M
✓✓
STM819L/M
✓✓
1.
All RST and RST outputs are push-pull.
www.st.com


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