STM690SM6F

The STM690SM6F is a 3V Supervisor with battery switchover. The supervisor is self-contained device which provide microprocessor supervisory functions with the ability to non-volatize and write-protect external LPSRAM. A precision voltage reference and comparator monitors the VCC input for an out-of-tolerance condition. When an invalid VCC condition occurs, the reset output (/RST) is forced low (or high in the case of RST). This device also offers a watchdog timer as well as a power-fail comparator to provide the system with an early warning of impending power failure.

• RST or /RST outputs
• NVRAM supervisor for external LPSRAM
• Manual (pushbutton) reset input
• Automatic battery switchover
• Power-fail comparator (PFI/PFO\)
• Guaranteed /RST assertion down to VCC = 1V
• 1.6s Typical watchdog timer
• 0.4μA Typical low battery supply current
• 40μA Typical low supply current