STM690A
Key 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)
- Low supply current - 40 µA (typ)
- Guaranteed RST (RST) assertion down to VCC = 1.0 V