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STM1404ARNBQ6F Datasheet(PDF) 6 Page - STMicroelectronics |
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STM1404ARNBQ6F Datasheet(HTML) 6 Page - STMicroelectronics |
6 / 35 page Description STM1404 6/36 1 Description The STM1404 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. STM1404 will target the highest security level 4 and include both physical and environmental (voltage and temperature) monitoring. The STM1404 include 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 STM1404A also offers a VREF (1.237V) as an option on pin 9. On STM1404B/C this pin is VTPU (internally switched VCC or VBAT). 1.1 VOUT pin modes The STM1404 is available in three versions, corresponding to three modes of the VOUT pin (supply voltage out), when the SAL (security alarm) is asserted (active-low) upon tamper detection: 1.1.1 STM1404A VOUT stays ON (at VCC or VBAT) when SAL is driven low (activated). 1.1.2 STM1404B VOUT is set to High-Z when SAL is driven low (activated). 1.1.3 STM1404C VOUT is driven to ground when SAL is activated (may be used when VOUT is connected directly to the VCC pin of the external SRAM that holds the cryptographic codes). All variants (see Table 1: Device summary) are pin-compatible and available in a security- friendly, low profile, 16-pin QFN package. |
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