STM1403 STMicroelectronics, STM1403 Datasheet - Page 9

• Manufacturer Part Number: STM1403
• Description: 3 V FIPS-140 security supervisor with battery switchover
• Manufacturer: STMicroelectronics

STM1403
Figure 4.
1. Normal mode: low when V
2. Capacitor (C) is typically ≥ 10 µF.
3. Open drain
4. Diode is required for battery reverse charge protection.
5. V
Figure 5.
1. R typical is 10 MΩ. Resistors must be protected against conductive materials.
battery.
REF
Unregulated
only for STM1403; V
Voltage
Hardware hookup
Tamper pin (TP
closed)
(e.g., Switches, Wire Mesh)
R1
R2
From Actuator Device
V IN
OUT
TPU
Regulator
Push-Button
Tamper Detection on Open
for STM1403B/C.
is internally switched to V
Switch Normally Closed;
V CC
1
0.1µF
Doc ID 13232 Rev 6
or TP
BAT54J (4)
1.0µF
3
) normally high (NH) external hookup (switch
V TPU (STM1403B/C)
V OUT (STM1403A)
V CC
PFI
MR
V BAT
TP 1
TP 2
TP 3
TP 4
or
PFO (3)
V CCSW
STM1403
R
(1)
CC
V REF (5)
and high when V
V TPU
RST
BLD
SAL
V OUT
(1)
or
(3)
(3)
(3)
TP 1 or TP 3
To Microprocessor NMI
To Microprocessor Reset
To Microprocessor
To ADC
To Physical Tamper Pins TP X
OUT
C
(2)
is internally switched to
V CC
LPSRAM
V CC
Description
AI09698
AI09690
9/34