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STM690A

STMicroelectronics
Part Number STM690A
Manufacturer STMicroelectronics
Description 5V supervisor
Published Nov 28, 2020
Detailed Description STM690A, STM692A, STM703 STM704, STM802, STM805, STM817/8/9 5 V supervisor with battery switchover Features ■ 5 V opera...
Datasheet PDF File STM690A PDF File

STM690A
STM690A

Overview
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 8 1 SO8 (M) TSSOP8 3 x 3 (DS)(1) 1.
Contact local ST sales office for availability.
Table 1.
Device summary Part number Watchdog input Active-low ActiveRST(1) high RST Manual reset input(1) Battery switch- over Power-fail comparator STM690A ✓ STM692A ✓ STM703 STM704 STM802L/M ✓ STM805L ✓ STM817L/M ✓ STM818L/M ✓ STM819L/M ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ 1.
All RST and RST outputs are push-pull.
Chipenable gating ✓ Battery freshness seal ✓ ✓ ✓ August 2010 Doc ID 10522 Rev 10 1/43 www.
st.
com 1 Contents Contents STM690A/692A/703/704/802/805/817/818/819 1 Description .
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6 1.
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