stm1404c STMicroelectronics, stm1404c Datasheet - Page 9

• Manufacturer Part Number: stm1404c
• Description: Security Supervisor With Battery Switchover
• Manufacturer: STMicroelectronics

Figure 4.
1. Normal mode: low when V
2. Capacitor (C) is typically ≥ 10µF.
3. Open drain
4. Diode is required for battery reverse charge protection.
5. V
battery.
REF
only for STM1404A; V
Hardware hookup
Unregulated
Voltage
(e.g., Switches, Wire Mesh)
R1
R2
From Actuator Device
OUT
TPU
V IN
Regulator
is internally switched to V
for STM1404B/C.
Push-Button
V CC
0.1μF
BAT54J (4)
1.0μF
V CC
PFI
MR
V BAT
TP 1
TP 2
TP 3
TP 4
V CCSW (1)
STM1404
V REF
CC
PFO
RST (3)
V TPU
BLD (3)
SAL (3)
V OUT
or
and high when V
(3)
(5)
To Microprocessor NMI
To Microprocessor Reset
To Microprocessor
To ADC
To Physical Tamper Pins TP X
C (2)
OUT
V CC
LPSRAM
is internally switched to
V CC
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