OMO ElectronicOMO Electronic
Expand menu
Hello, Sign inMy Account
0 Cart

STM1404ATOHQ6F

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P33P34-P35
August 2008 Rev 5 1/36
1
STM1404
3 V FIPS-140
security supervisor with battery switchover
Features
■ STM1404 supports FIPS-140 security level 4
– Four high-impedance physical tamper
inputs
– Over/under operating voltage detector
– Security alarm (SAL
) on tamper detection
– Over/under operating temperature detector
– Over/under temperature thresholds are
customer-selectable and factory-
programmed
■ Supervisory functions
– Automatic battery switchover
–RST
output (open drain)
– Manual (push-button) reset input (MR
)
– Power-fail comparator (PFI/PFO
)
■ Vccsw (V
CC
switch output)
– Low when switched to V
CC
– High when switched to V
BAT
(BATT ON
indicator)
■ Battery low voltage detector (power-up)
■ Optional V
REF
(1.237 V)
– (Available for STM1404A only)
■ Low battery supply current (5.3 µA typ)
■ Secure low profile 16-pin, 3 x 3 mm, QFN
package
■ RoHS compliance
– Lead-free components compliant with the
RoHS directive
QFN16, 3 mm x 3 mm (Q)
Table 1. Device summary
Device
Standard
supervisory
functions
(1)
Physical
tamper
inputs
Over/under
voltage
alarms
Over/under
temperature
alarms
V
REF
(1.237 V)
option
V
OUT
status,
during alarm
Vccsw status,
during alarm
STM1404A ✔✔✔ ✔✔ON Normal mode
(2)
STM1404B
(3)
✔✔✔ ✔Note
(4)
High-Z High
STM1404C ✔✔✔ ✔Note
(4)
Ground High
1. Reset output, power-fail comparator, battery low detection (SAL, RST, PFO, and BLD are open drain).
2. Normal mode: low when V
OUT
is internally switched to V
CC
and high when V
OUT
is internally switched to battery.
3. Contact local ST sales office for availability.
4. Pin 9 is the V
REF
pin for STM1404A. It is the V
TPU
pin for STM1404B/C.
www.st.com
Contents STM1404
2/36
Contents
1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.1 V
OUT
pin modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.1.1 STM1404A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.1.2 STM1404B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.1.3 STM1404C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2 Pin descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.1 SAL, security alarm output (open drain) . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.2 TP
1
, TP
3
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.3 TP
2
, TP
4
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.3.1 Vccsw, V
CC
switch output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.4 BLD, V
BAT
low voltage detect output (open drain) . . . . . . . . . . . . . . . . . . 13
2.5 Active-low RST
output (open drain) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.6 MR
, manual reset input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.7 PFO
, power-fail output (open drain) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.8 PFI, power-fail input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.9 V
REF
, reference voltage output (1.237, typ) . . . . . . . . . . . . . . . . . . . . . . . 14
2.10 V
OUT
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.11 V
TPU
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.12 V
CC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.13 V
BAT
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.14 V
SS
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.1 Reset input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.2 Push-button reset input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.3 Backup battery switchover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.4 Applications information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.5 Negative-going V
CC
transients and undershoot . . . . . . . . . . . . . . . . . . . . 17
4 Tamper detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.1 Physical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
STM1404 Contents
3/36
4.2 Supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.3 Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
5 Typical operating characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
6 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
7 DC and AC parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
8 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
9 Part numbering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
10 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P33P34-P35

STM1404ATOHQ6F

Mfr. #:
Buy STM1404ATOHQ6F
Manufacturer:
STMicroelectronics
Description:
Supervisory Circuits 3V FIPS 140 Security supervisor
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

Products related to this Datasheet