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STM1403ARNQ6F Datasheet(PDF) 8 Page - STMicroelectronics

Part # STM1403ARNQ6F
Description  3 V FIPS-140 security supervisor with battery switchover
Download  34 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STM1403ARNQ6F Datasheet(HTML) 8 Page - STMicroelectronics

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Description
STM1403
8/35
Figure 2.
QFN16 connections
Note:
See Section 2: Pin descriptions on page 11 for details.
1.
Normal mode: low when VOUT is internally switched to VCC and high when VOUT is internally switched to
battery.
2.
SAL, RST, PFO, and BLD are open drain.
3.
VREF only for STM1403A; VTPU for STM1403B/C
Figure 3.
Block diagram
1.
BAT54J (from STMicroelectronics) recommended
2.
Required for battery-reverse charging protection
3.
Open drain
4.
VREF only for STM1403; VTPU for STM1403B/C
1
PFO(2)
PFI
TP1
(NH)
BLD(2)
MR
RST(2)
VCC
VCCSW
(1)
VOUT
VREF or VTPU
(3)
VBAT
VSS
AI09683
2
3
4
8
7
6
5
SAL(2)
9
10
11
12
13
14
15
16
TP2
(NL)
TP3
(NH)
TP4
(NL)
AI09684
COMPARE @
POWER-UP
VRST
VINT
VOUT
VREF
(4)
1.237V VREF
Generator
COMPARE
COMPARE
COMPARE
COMPARE
COMPARE
trec
Generator
VPFI
VBAT
(1)
VDET
VHV
VLV
VSO
VCC
PFI
TP1 (NH)
TP2 (NL)
TP3 (NH)
TP4 (NL)
MR
RST
(3)
PFO
(3)
BLD
(3)
VCCSW
SAL
(3)
VTPU
(4)
BAT54J
(1,2)


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