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STM690 Datasheet

  • STM690

  • 3V Supervisor with Battery Switchover

  • 31頁

  • STMICROELECTRONICS   STMICROELECTRONICS

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STM690, STM704, STM795
STM802, STM804, STM805, STM806
3V Supervisor with Battery Switchover
FEATURES SUMMARY
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RST OR RST OUTPUTS
NVRAM SUPERVISOR FOR EXTERNAL
LPSRAM
CHIP-ENABLE GATING (STM795 only) FOR
EXTERNAL LPSRAM (7ns max PROP
DELAY)
MANUAL (PUSH-BUTTON) RESET INPUT
200ms (TYP) t
rec
WATCHDOG TIMER - 1.6sec (TYP)
AUTOMATIC BATTERY SWITCHOVER
LOW BATTERY SUPPLY CURRENT - 0.4碌A
(TYP)
POWER-FAIL COMPARATOR (PFI/PFO)
LOW SUPPLY CURRENT - 40碌A (TYP)
GUARANTEED RST (RST) ASSERTION
DOWN TO V
CC
= 1.0V
OPERATING TEMPERATURE:
鈥?0擄C to 85擄C (Industrial Grade)
Figure 1. Packages
8
1
SO8 (M)
TSSOP8 3x3 (DS)*
Table 1. Device Options
Watchdog
Input
STM690T/S/R
STM704T/S/R
STM795T/S/R
STM802T/S/R
STM804T/S/R
STM805T/S/R
STM806T/S/R
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Active-
Low RST
(1)
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(2)
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(2)
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(2)
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Active-
High
RST
Manual
Battery
Reset Input Switch-over
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Power-fail
Compar-
ator
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Chip-
Enable
Gating
Note: 1. All RST outputs push-pull (unless otherwise noted)
2. Open drain output.
* Contact local ST sales office for availability.
September 2004
1/31

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