参数资料
型号: TC1272ASVNBTR
厂商: Microchip Technology
文件页数: 5/12页
文件大小: 0K
描述: IC RESET MONITOR 2.93V SOT-23B
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: 低有效
复位超时: 最小为 140 ms
电压 - 阀值: 2.93V
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: TO-236-3,SC-59,SOT-23-3
供应商设备封装: SOT-23-3
包装: 带卷 (TR)
TC1272A
3.3
Controllers and Processors With
Bidirectional I/O Pins
Some microcontrollers have bidirectional reset pins.
Depending on the current drive capability of the
controller pin, an indeterminate logic level may result if
V DD
Buffer
Buffered RESET
To Other System
Components
MCU
there is a logic conflict. This can be avoided by adding
a 4.7 k ? resistor in series with the output of the
TC1272A (Figure 3-3). If there are other components in
the system that require a reset signal, they should be
buffered so as not to load the reset line. If the other
components are required to follow the reset I/O of the
TC1272A
RESET
GND
4.7 k ?
PICmicro ?
Micro-
RESET
GND
microcontroller, the buffer should be connected as
shown with the solid line.
FIGURE 3-3:
Interfacing the TC1272A to
a Bidirectional RESET I/O.
? 2004 Microchip Technology Inc.
DS21877A-page 5
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