STM1404 Datasheet, PDF (1/9 Pages) STMicroelectronics – Security Supervisor with Battery Switchover

STM1404
3V FIPS-140
Security Supervisor with Battery Switchover
DATA BRIEFING
FEATURES
■ STM1404 SUPPORTS FIPS-140 SECURITY
LEVEL 4
– 4 High-Impedance Physical Tamper
Inputs
– Over/Under Operating Voltage Detector
– Security Alarm (SAL) on Tamper
Detection
– Over/Under Operating Temperature
Detector
– Over/Under Temperature Thresholds are
Customer-Selectable and Factory-
Programmed
■ SUPERVISORY FUNCTIONS
– Automatic Battery Switchover
– RST Output (Open Drain)
– Manual (Push-button) Reset Input (MR)
– Power-fail Comparator (PFI/PFO)
■ Vccsw (V_CC SWITCH OUTPUT)
– Low When Switched to V_CC
– High When Switched to V_BAT (BATT ON
Indicator)
■ BATTERY LOW VOLTAGE DETECTOR
(POWER-UP)
Figure 1. Package
QFN16, 3x3mm (Q)
■ OPTIONAL V_REF (1.237V)
(Available for STM1404A only)
■ LOW BATTERY SUPPLY CURRENT (5.3µA
Typ)
■ SECURE LOW PROFILE 16-PIN, 3x3mm,
QFN PACKAGE
■ RoHS COMPLIANCE
Lead-free components compliant with the
RoHS directive
Table 1. Device Options
STM704
Functions⁽¹⁾
Physical
Tamper
Inputs
Over/Under Over/Under
Voltage Temperature
Alarms
Alarms
V_REF
(1.237V)
Option
V_OUT Status,
During
Alarm
Vccsw Status,
During Alarm
STM1404A
✔
✔
✔
✔
✔
ON
Normal Mode⁽²⁾
STM1404B
✔
✔
✔
✔
Note 3
High-Z
High
STM1404C
✔
✔
✔
✔
Note 3
Ground
High
Note: 1. SAL, RST, PFO, and BLD are Open Drain.
2. Normal Mode: Low when VOUT is internally switched to VCC and High when VOUT is internally switched to battery.
3. Pin 9 is the V_REF pin for STM1404A. It is the V_TPU pin for STM1404B/C.
January 2006
For further information contact your local ST sales office.
Rev 4.0
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