STM1403 STMicroelectronics, STM1403 Datasheet - Page 8

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

Description
Note:
8/34
Figure 2.
See
1. Normal mode: low when V
2. SAL, RST, PFO, and BLD are open drain.
3. V
Figure 3.
1. BAT54J (from STMicroelectronics) recommended
2. Required for battery-reverse charging protection
3. Open drain
4. V
battery.
REF
REF
Section 2: Pin descriptions on page 11
V CC
MR
PFI
only for STM1403A; V
BAT54J
only for STM1403; V
QFN16 connections
Block diagram
(1,2)
V BAT
(1)
RST
SAL
OUT
TPU
V
MR
TPU
SS
(2)
(2)
TP 1 (NH)
TP 2 (NL)
TP 3 (NH)
TP 4 (NL)
V INT
for STM1403B/C
is internally switched to V
for STM1403B/C
Doc ID 13232 Rev 6
BLD
1
2
3
4
V SO
V RST
V PFI
V DET
V HV
(NH)
V LV
TP 1
16
5
(2)
PFI
15
(NL)
COMPARE @
TP 2
1.237V V REF
POWER-UP
COMPARE
COMPARE
COMPARE
COMPARE
COMPARE
6
Generator
V
for details.
CCSW
(NH)
14
TP 3
7
CC
(1)
and high when V
V
TP 4
(NL)
13
CC
8
12
11
10
9
V
V
V
PFO
OUT
REF or
BAT
OUT
(2)
is internally switched to
V
Generator
TPU
t rec
(3)
V OUT
V TPU
V REF (4)
V CCSW
RST
PFO (3)
BLD
SAL
STM1403
(3)
(3)
(3)
(4)
AI09683
AI09684