STM690A Datasheet, PDF (1/37 Pages) STMicroelectronics – 5V Supervisor with Battery Switchover

STM690A, STM692A, STM703
STM704, STM802, STM805, STM817/8/9
5V Supervisor with Battery Switchover
FEATURES SUMMARY
■ 5V OPERATING VOLTAGE
■ NVRAM SUPERVISOR FOR EXTERNAL
LPSRAM
■ CHIP-ENABLE GATING (STM818 only) FOR
EXTERNAL LPSRAM (7ns max PROP
DELAY)
■ RST AND RST OUTPUTS
■ 200ms (TYP) t_rec
■ WATCHDOG TIMER - 1.6sec (TYP)
■ AUTOMATIC BATTERY SWITCHOVER
■ LOW BATTERY SUPPLY CURRENT - 0.4µA
(TYP)
■ POWER-FAIL COMPARATOR (PFI/PFO)
■ LOW SUPPLY CURRENT - 40µA (TYP)
■ GUARANTEED RST (RST) ASSERTION
DOWN TO V_CC = 1.0V
■ OPERATING TEMPERATURE:
–40°C to 85°C (Industrial Grade)
■ RoHS COMPLIANCE
Lead-free components are compliant with the
RoHS Directive.
Figure 1. Packages
8
1
SO8 (M)
TSSOP8 3x3 (DS)*
Table 1. Device Options
Watchdog
Input
Active-
Low
RST⁽¹⁾
Active-
High
RST⁽¹⁾
STM690A
✔
✔
STM692A
✔
✔
STM703
✔
STM704
✔
STM802L/M
✔
✔
STM805L
✔
✔
STM817L/M
✔
✔
STM818L/M
✔
✔
STM819L/M
✔
Note: 1. All RST and RST outputs are push-pull.
Manual
Reset
Input
✔
✔
✔
Battery
Switch-
over
✔
✔
✔
✔
✔
✔
✔
✔
✔
Power-fail
Comparator
✔
✔
✔
✔
✔
✔
✔
✔
Chip-
Enable
Gating
✔
Battery
Freshness
Seal
✔
✔
✔
* Contact local ST sales office for availability.
January 2006
Rev 7.0
1/37