stm1404c STMicroelectronics, stm1404c Datasheet - Page 8

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

Note:
8/36
Figure 2.
See
1. Normal mode: low when V
2. SAL, RST, PFO, and BLD are open drain.
3. V
Figure 3.
1. Required for battery-reverse charging protection.
2. User supplied.
3. Open drain.
4. V
battery.
REF
REF
Section : Pin descriptions on page 12
only for STM1404A; V
only for STM1404A; V
V CC
QFN16 connections
Block diagram
MR
PFI
BAT54J
V BAT (2)
(1)
RST
SAL
V
MR
SS
(2)
(2)
OUT
TPU
TPU
is internally switched to V
for STM1404B/C.
for STM1404B/C.
BLD
1
2
3
4
TP 1 (NH)
TP 2 (NL)
TP 3 (NH)
TP 4 (NL)
V INT
(NH)
16
TP 1
5
(2)
V SO
V RST
V PFI
V DET
V HV
V LV
PFI
15
(NL)
TP 2
6
V
COMPARE @
1.237V V REF
CCSW
POWER-UP
COMPARE
COMPARE
COMPARE
COMPARE
COMPARE
High Temp.
Low Temp.
Generator
for details.
T A > T H
T A < T L
14
(NH)
Sense
Sense
TP 3
7
(1)
CC
V
(NL)
TP 4
13
CC
and high when V
8
12
11
10
9
V
V
V
PFO
OUT
REF or
BAT
(2)
OUT
AI09683
Generator
V
t rec
TPU
is internally switched to
(3)
AI09684a
V OUT
V TPU (4)
V REF (4)
V CCSW
RST (3)
PFO (3)
BLD
SAL (3)
(3)