STM1403 STMicroelectronics, STM1403 Datasheet - Page 7

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

STM1403
Note:
Figure 1.
1. V
2. Normal mode: low when V
3. SAL, RST, PFO, and BLD are open drain.
Table 2.
1. Normal mode: low when V
2. SAL, RST, PFO, and BLD are open drain.
3. V
See
Vccsw
MR
PFI
TP
V
RST
PFO
SAL
BLD
V
V
V
V
V
OUT
REF
TPU
BAT
CC
SS
battery.
battery.
1
REF
REF
(2)
(2)
Section 2: Pin descriptions on page 11
- TP
(2)
(2)
(3)
(3)
(1)
only for STM1403A; V
only for STM1403A; V
4
Logic diagram
Signal names
V
TP 1 (NH)
CCSW
OUT
OUT
TPU
TPU
MR
PFI
(2)
is internally switched to V
is internally switched to V
for STM1403B/C.
for STM1403B/C.
Doc ID 13232 Rev 6
BLD
(NL)
TP 2
V
Manual (push-button) reset input
Power-fail Input
Independent physical tamper detect pins 1 through 4
Supply voltage output
Active-low reset output
Power-fail output
Security alarm output
Battery low voltage detect
1.237 V reference voltage
Tamper pull-up (V
Backup supply voltage
Supply voltage
Ground
CC
(3)
switch output
V
(NH)
STM1403
TP 3
V
TPU
REF
or
(1)
for details.
(NL)
V
TP 4
BAT
CC
CC
CC
and high when V
and high when V
V
V
CC
SS
or V
BAT
)
V
RST
PFO
SAL
OUT
OUT
OUT
(3)
(3)
(3)
is internally switched to
is internally switched to
Description
AI09682
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