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| 型号： | TC1271ATVRCTR |
| 厂商： | Microchip Technology |
| 文件页数： | 18/48页 |
| 文件大小： | 0K |
| 描述： | IC RESET MONITOR 3.08V SOT143-4 |
| 标准包装： | 3,000 |
| 类型： | 简单复位/加电复位 |
| 监视电压数目： | 1 |
| 输出： | 推挽式，图腾柱 |
| 复位： | 高有效 |
| 复位超时： | 最小为 140 ms |
| 电压 - 阀值： | 3.08V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | TO-253-4，TO-253AA |
| 供应商设备封装： | SOT-143 |
| 包装： | 带卷 (TR) |
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TC1270A/70AN/71A
TABLE 3-1:
PINOUT DESCRIPTION (CONTINUED)
Pin Number
TC1270A
(Push-Pull,
TC1270AN
(Open-Drain,
TC1271A
(Push-Pull,
Pin
active-low)
active-low)
active-high)
Sym
Standard Function
Type
Buffer /
Driver
3
3
3
3
3
3
MR
I
ST ( 1 )
Manual Reset Input Pin
This input allows a push button switch to be
directly connected to a TC1270A/70AN/71A
device’s MR pin, which can be used to force a
system Reset. The input filter ignores noise
pulses that occur on the MR pin.
H = Switch is open (internal pull-up resistor
pulls signal high). State of the RST/RST
pin is determined by other system condi-
tions.
L = Switch is depressed (shorted to ground).
This forces the RST/RST pin Active.
2
1
4
—
2
1
4
—
2
1
4
—
V DD
NC
—
—
Power
—
Supply Voltage
No Connection
Note 1:
The MR pin has an internal weak pull-up (18.5 k ? typical).
3.1
Ground Terminal (V SS )
3.3.2
ACTIVE-HIGH (RST) – PUSH-PULL
V SS provides the negative reference for the analog
input voltage. Typically, the circuit ground is used.
The RST push-pull output remains high while V DD is
below the Reset voltage threshold (V TRIP ). The time
that the RST pin is held high after the device voltage
3.2
Supply Voltage (V DD )
(V DD ) returns to a high level (> V TRIP ) is typically
280 ms. After the Reset Delay Timer expires, the RST
V DD can be used for power supply monitoring or a
pin will be driven to the low state.
voltage level that requires monitoring.
3.3.3
ACTIVE-LOW (RST) – OPEN-DRAIN
3.3
Reset Output (RST and RST)
The RST open-drain output remains low while V DD is
There are three types of Reset output pins. These are:
below the Reset voltage threshold (V TRIP ). The time
that the RST pin is held low after the device voltage
1.
2.
3.
Push-Pull active-low Reset
Push-Pull active-high Reset
Open-Drain active-low Reset, external pull-up
(V DD ) returns to a high level (> V TRIP ) depends on the
Reset time-out selected. After the Reset Delay Timer
expires, the RST pin will float.
resistor required.
3.4
Manual Reset Input (MR)
3.3.1
ACTIVE-LOW (RST) – PUSH-PULL
The Manual Reset (MR) input pin allows a push button
The RST push-pull output remains low while V DD is
below the Reset voltage threshold (V TRIP ). The time
that the RST pin is held low after the device voltage
(V DD ) returns to a high level (> V TRIP ) is typically
280 ms. After the Reset Delay Timer expires, the RST
pin will be driven to the high state.
DS22035D-page 18
switch to easily be connected to the system. When the
push button is depressed, it forces a system Reset.
This pin has circuitry that filters noise that may be
present on the MR signal.
The MR pin is active-low and has an internal pull-up
resistor.
? 2007-2011 Microchip Technology Inc.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TC1271FERC | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:4-Pin レP Reset Monitors |
| TC1271FERCTR | 功能描述:监控电路 4-Pin uP 1.75V Reset RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| TC1271LERC | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:4-Pin レP Reset Monitors |
| TC1271LERCTR | 功能描述:监控电路 4-Pin uP 4.63V Reset RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| TC1271MERC | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:4-Pin レP Reset Monitors |
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