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參數(shù)資料
| 型號(hào)： | STM1404 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | Security Supervisor with Battery Switchover(帶電池轉(zhuǎn)換功能的安全監(jiān)控器) |
| 中文描述： | 安全監(jiān)控與電池切換（帶電池轉(zhuǎn)換功能的安全監(jiān)控器） |
| 文件頁(yè)數(shù)： | 7/36頁(yè) |
| 文件大?。?/td> | 362K |
| 代理商： | STM1404 |
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STM1404
Summary description
7/36
Figure 1.
Logic diagram
1.
2.
V
REF
only for STM1404A; V
TPU
for STM1404B/C.
Normal Mode: Low when V
OUT
is internally switched to V
CC
and High when V
OUT
is internally switched to
battery.
SAL, RST, PFO, and BLD are open drain.
3.
Table 2.
Vccsw
(1)
Note:
See
Section : Pin descriptions on page 12
for details.
Signal names
1.
Normal mode: low when V
OUT
is internally switched to V
CC
and high when V
OUT
is internally switched to
battery.
V
CC
Switch output
MR
Manual (push-button) reset input
PFI
Power-fail input
TP
1
- TP
4
Independent physical tamper detect pins 1 through 4
V
OUT
RST
(2)
Supply voltage output
2.
SAL, RST, PFO, and BLD are open drain.
Active-low reset output
PFO
(2)
Power-fail output
SAL
(2)
Security alarm output
BLD
(2)
Battery low voltage detect
V
REF(3)
3.
V
REF
only for STM1404A; V
TPU
for STM1404B/C.
1.237V Reference voltage
V
TPU(3)
Tamper pull-up
(V
CC
or V
BAT
)
V
BAT
Back-up supply voltage
V
CC
Supply voltage
V
SS
Ground
AI09682a
V
CC
V
BAT
STM1404
V
SS
V
OUT
V
REF
or
V
TPU(1)
V
CCSW(2)
MR
SAL
(3)
BLD
(3)
PFI
TP1 (NH)
TP2
(NL)
TP3
(NH)
TP4
(NL)
PFO
(3)
RST
(3)
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