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參數(shù)資料
| 型號： | 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） |
| 文件頁數(shù)： | 29/36頁 |
| 文件大?。?/td> | 362K |
| 代理商： | STM1404 |
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STM1404
DC and AC parameters
29/36
Reset thresholds
V
RST(9)
Reset threshold
T
V
CC
falling
3.00
3.075
3.15
V
V
CC
rising
3.00
3.085
3.17
V
S
V
CC
falling
2.85
2.925
3.00
V
V
CC
rising
2.85
2.935
3.02
V
R
V
CC
falling
2.55
2.625
2.70
V
V
CC
rising
2.55
2.635
2.72
V
t
rec
RST pulse width
140
200
280
ms
Push-button reset input
t
MLMH
t
MR
MR pulse width
100
ns
t
MLRL
t
MRD
MR to RST output
delay
60
500
ns
1.
Valid for ambient operating temperature: T
A
= –40 to 85°C; V
CC
= V
RST
(max) to 3.6V; and V
BAT
= 2.8V (except where
noted); typical values are for 3.3V and 25°C.
2.
V
supply current, logic input leakage, push-button reset functionality, PFI functionality, state of RST tested at V
=
3.6V, and V
CC
= 3.6V. The state of RST and PFO is tested at V
CC
= V
CC
(min). V
BAT
is voltage measured at the pin.
Tested at V
BAT
= 3.6V, and V
CC
= 0V.
Guaranteed by design.
3.
4.
5.
The leakage current measured on the RST, SAL, PFO, and BLD pins are tested with the output not asserted (output high
impedance).
6.
When V
BAT
> V
CC
> V
SW
, V
OUT
remains connected to V
CC
until V
CC
drops below V
SW
.
When V
SW
> V
CC
> V
BAT
, V
OUT
remains connected to V
CC
until V
CC
drops below the battery voltage (V
BAT
) – 75mV.
Maximum external capacitive load on V
REF
pin cannot exceed 1nF.
The reset threshold tolerance is wider for V
CC
rising than for V
CC
falling due to the 10mV (typ) hysteresis, which prevents
internal oscillation.
7.
8.
9.
Table 6.
DC and AC characteristics (continued)
Sym
Alter-
native
Description
Test condition
(1)
Min
Typ
Max
Unit
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