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STM818LDS6E Datasheet(PDF) 2 Page - STMicroelectronics

Part # STM818LDS6E
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

STM818LDS6E Datasheet(HTML) 2 Page - STMicroelectronics

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Contents
STM690A/692A/703/704/802/805/817/818/819
2/43
Doc ID 10522 Rev 10
Contents
1
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.1
Pin descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.1.1
MR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.1.2
WDI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.1.3
RST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.1.4
RST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.1.5
VOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.1.6
VBAT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.1.7
E . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.1.8
ECON . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.1.9
PFI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.1.10
PFO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.1
Reset output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.2
Push-button reset input (STM703/704/819) . . . . . . . . . . . . . . . . . . . . . . . 13
2.3
Watchdog input (NOT available on STM703/704/819) . . . . . . . . . . . . . . . 13
2.4
Backup battery switchover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.5
Chip-enable gating (STM818 only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.6
Chip-enable input (STM818 only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.7
Chip-enable output (STM818 only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.8
Power-fail input/output (NOT available on STM818) . . . . . . . . . . . . . . . . 16
2.9
Applications information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2.10
Using a SuperCap™ as a backup power source . . . . . . . . . . . . . . . . . . . 17
2.11
Negative-going VCC transients . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
2.12
Battery freshness seal (STM817/818/819) . . . . . . . . . . . . . . . . . . . . . . . . 19
3
Typical operating characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
4
Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
5
DC and AC parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32


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