Datasheet Summary
3 V FIPS-140 security supervisor with battery switchover
Features
- STM1403 supports FIPS-140 security level 3+
- Four high-impedance physical tamper inputs
)
- Over/under operating voltage detector t(s
- Security alarm (SAL) on tamper detection c
- Supervisory functions du
- Automatic battery switchover ro
- RST output (open drain) P
- Manual (push-button) reset input (MR) te
- Power-fail parator (PFI/PFO) le
- Vccsw (VCC switch output) o
- Low when switched to VCC bs
- High when switched to VBAT (BATT ON indicator)
- O
- Battery low voltage detector (power-up) t(s)
- Optional VREF (1.237 V)
- (Available for STM1403A only) uc
- Low battery supply current (2.8 µA, typ) d
-...