参数资料
型号: MCP1321T-46LE/OT
厂商: Microchip Technology
文件页数: 30/52页
文件大小: 0K
描述: IC SUPERVISOR 4.6V OD/PP SOT23-5
标准包装: 1
类型: 简单复位/加电复位
监视电压数目: 1
输出: 开路漏极,推挽式
复位: 高有效/低有效
复位超时: 最小为 140 ms
电压 - 阀值: 4.6V
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: SC-74A,SOT-753
供应商设备封装: SOT-23-5
包装: 标准包装
产品目录页面: 662 (CN2011-ZH PDF)
其它名称: MCP1321T-46LE/OTDKR
MCP131X/2X
4.1
Reset Voltage Trip Point (V TRIP )
Operation
The Reset pin (RST or RST) will be forced active if any
of the following occurs:
The device’s Reset voltage trip point (V TRIP ) is selected
when the device is ordered. As the voltage on the
device’s V DD pin is above or below this selected trip
point, the output of the Reset pin (RST/RST) will be
?
?
?
?
The Manual Reset input (MR) goes low
The Watchdog Timer times out
V DD goes below the threshold
During device power-up
forced to either the inactive or active state.
For the voltage trip point, there is a minimum trip voltage
(V TRIPMIN ) and a maximum trip voltage (V TRIPMAX ). The
voltage that the device “actually” trips at will be referred
to as V TRIP . The trip voltage is specified for the falling of
the device V DD .
There is also a hysteresis (V HYS ) on the trip point. This
is so that noise on the device voltage (V DD ) does not
cause the Reset pin (RST/RST) to “jitter” (change
between driving an active and inactive state).
After the device exits the Reset condition, the delay
circuitry will hold the RST and RST pins active until the
appropriate Reset delay time (t RST ) has elapsed.
TABLE 4-1:
RESET PIN STATES
State of RST Pin when:
State of RST ( 3 ) Pin when:
Device
MCP1316
V DD <
V TRIP
L
V DD > V TRIP +
V HYS
H
V DD <
V TRIP
V DD > V TRIP +
V HYS
Output Driver
Push-pull
MCP1316M
L
H
( 2 )
Open-drain ( 2 )
MCP1317
MCP1318
L
H
H
H
L
L
Push-pull
Push-pull
MCP1318M
L
H
( 2 )
H
L
Open-drain ( 2 )
MCP1319
L
H
H
L
Push-pull
MCP1319M
L
H
( 2 )
H
L
Open-drain ( 2 )
MCP1320
MCP1321
MCP1322
L
L
L
H ( 1 )
H ( 1 )
H ( 1 )
H
H
L
L
Open-drain ( 1 )
Open-drain ( 1 )
Open-drain ( 1 )
Note 1:
2:
3:
Requires External Pull-up resistor.
Has Internal Pull-up resistor.
The RST pin output is always push-pull.
DS21985C-page 30
? 2005-2012 Microchip Technology Inc.
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