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參數(shù)資料
| 型號(hào)： | TC1270ATVRCTR |
| 廠商： | Microchip Technology Inc. |
| 英文描述： | Voltage Supervisor with Manual Reset Input |
| 中文描述： | 電壓監(jiān)控器，帶有手動(dòng)復(fù)位輸入 |
| 文件頁數(shù)： | 20/40頁 |
| 文件大?。?/td> | 384K |
| 代理商： | TC1270ATVRCTR |
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TC1270A/70AN/71A
DS22035B-page 20
2007 Microchip Technology Inc.
4.2.3
POWER-DOWN/BROWN-OUTS
As the device powers-down/brown-outs, the V
DD
falls
from a voltage above the devices trip point (V
TRIP
). The
device will trip at a voltage between the maximum trip
point (V
TRIP(MAX)
) and the minimum trip point
(V
TRIP(MIN)
). Once the device voltage (V
DD
) goes
below this voltage, the RST/RST pin will be forced to
the active state.
Figure 4-8
shows the waveform of the RST pin as
determined by the V
DD
voltage. As the V
DD
voltage falls
from the normal operating point, the device “enters”
reset by crossing the V
TRIP
voltage (between
V
TRIP(MAX)
and V
TRIP(MIN)
). Then when V
DD
voltage
rises, the device “exits” reset by crossing the V
TRIP
volt-
age (below or at V
TRIP(MAX)
). After the “exit” state has
been detected, the Reset Delay Timer (t
RST
) starts.
Once the t
RST
time completes, the Reset pin is driven
inactive.
Table 4-3
shows the state of the RST or RST pins.
TABLE 4-3:
RESET PIN STATES
FIGURE 4-8:
RST
Operation as determined by the V
TRIP
.
Device
State of RST Pin when:
State of RST Pin when:
Output Driver
V
DD
< V
TRIP
V
DD
> V
TRIP
(1)
V
DD
< V
TRIP
V
DD
> V
TRIP
(1)
TC1270A
L
H
—
—
Push-Pull
TC1271A
—
—
H
L
Push-Pull
Note 1:
The RST/RST pin will be driven inactive after the Reset Delay Timer (t
RST
) times out.
V
DD
V
TRIP
RST
(1)
1V
< 1V is outside the
device specifications
t
RD
t
RST
t
RD
t
RST
V
TRIP
(with V
DD
Falling)
(with V
DD
Rising)
Note 1:
The TC1270AN requires an external pull-up resistor.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TC1270FERC | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:4-Pin レP Reset Monitors |
| TC1270FERCTR | 功能描述:監(jiān)控電路 4-Pin uP 1.75V Reset RoHS:否 制造商:STMicroelectronics 監(jiān)測(cè)電壓數(shù): 監(jiān)測(cè)電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| TC1270LERC | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:4-Pin レP Reset Monitors |
| TC1270LERCTR | 功能描述:監(jiān)控電路 4-Pin uP 4.63V Reset RoHS:否 制造商:STMicroelectronics 監(jiān)測(cè)電壓數(shù): 監(jiān)測(cè)電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| TC1270MERC | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:4-Pin レP Reset Monitors |
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