STM1403

The STM1403 family of security supervisors are a low power family of intrusion (tamper) detection chips targeted at manufacturers of POS terminals and other systems, to enable them to meet physical and/or environmental intrusion monitoring requirements as mandated by various standards,such as Federal Information Processing Standards (FIPS) Pub 140 entitled "Security Requirements for Cryptographic Modules," published by the National Institute of Standards and Technology,U.S. Department of Commerce), EMVCo, ISO,ZKA, and VISA PED. STM1403 supports target
levels 3 and lower

The STM1403 includes Automatic Battery Switchover, RST Output (Open Drain), Manual (Push-button) Reset Input (MR), Power-fail Comparator (PFI/PFO), Physical and/or Environmental Tamper Detect/Security Alarm, and Battery Low
Voltage Detect features.

The STM1403A also offers a V_REF (1.237V) as an option on pin 9. On the STM1403B/C, this pin is V_TPU (internally switched V_CC or V_BAT).