STM1403 Datasheet, PDF (1/9 Pages) STMicroelectronics – 3V FIPS-140 Security Supervisor with Battery Switchover

STM1403
3V FIPS-140
Security Supervisor with Battery Switchover
DATA BRIEFING
FEATURES*
■ STM1403 SUPPORTS FIPS-140 SECURITY
LEVEL 3+
– 4 High-Impedance Physical Tamper
Inputs
– Over/Under Operating Voltage Detector
– Security Alarm (SAL) on Tamper
Detection
■ 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)
■ OPTIONAL V_REF (1.237V)
(Available for STM1403A only)
■ LOW BATTERY SUPPLY CURRENT (2.8µA,
typ)
■ SECURE LOW PROFILE 16-PIN, 3x3mm,
QFN PACKAGE
Figure 1. Package
QFN16, 3mm x 3mm (Q)
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
STM1403A
✔
✔
✔
✔
ON
Normal Mode⁽²⁾
STM1403B
✔
✔
✔
Note 3
High-Z
High
STM1403C
✔
✔
✔
Note 3
Ground
High
Note: 1. SAL, RST, PFO, and BLD are Open Drain.
2. Normal Mode: Low when V_OUT is internally switched to V_CC and High when V_OUT is internally switched to battery.
3. Pin 9 is the VREF pin for STM1403A. It is the VTPU pin for STM1403B/C.
* Contact local ST sales office for the full datasheet.
October 2005
For further information contact your local ST sales office.
Rev 4.0
1/9