STM1404A STMICROELECTRONICS [STMicroelectronics], STM1404A Datasheet - Page 4

• Manufacturer Part Number: STM1404A
• Description: Security Supervisor with Battery Switchover
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

STM1404
Figure 4. Block Diagram
Note: 1. BAT54J (from STMicroelectronics) recommended.
4/9
2. Required for battery-reverse charging protection.
3. Open Drain
4. V
V CC
MR
PFI
REF
BAT54J
V BAT (1)
only for STM1404A; V
(1,2)
TPU
TP 1 (NH)
TP 2 (NL)
TP 3 (NH)
TP 4 (NL)
for STM1404B/C.
V INT
V SO
V RST
V PFI
V DET
V HV
V LV
COMPARE @
1.237V V REF
POWER-UP
COMPARE
COMPARE
COMPARE
COMPARE
COMPARE
High Temp.
Low Temp.
Generator
T A > T H
T A < T L
Sense
Sense
Generator
t rec
AI09684a
V OUT
V TPU (4)
V REF (4)
V CCSW
RST (3)
PFO (3)
BLD (3)
SAL
(3)