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STM6778TGWB6F 产品描述及参数 - ST Microelectronics（意法半导体）
制造商:
ST Microelectronics（意法半导体）
分类:
电源监控芯片
封装:
SOT-23-6
描述:
STM6778 系列 1.11V, 3.075V 140 ms 双超低电压 监控器 - SOT-23-6
Pictures:
3D模型
符号图
焊盘图
引脚图
产品图
页面导航:
原理图在P4
技术参数、封装参数在P16
应用领域在P10P16
导航目录
STM6778TGWB6F数据手册
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When to and why use reset and supervisor ICs? TN0941
4/16 DocID023775 Rev 1
1 When to and why use reset and supervisor ICs?
The reset and supervisor functions should be used in complex systems to ensure proper
wake-up during power-up, and/or to reboot the system when an application has failed or
frozen.
With the increased development and utilization of microprocessing units (example, 8-bit low
cost, 32-bit low power, 64-bit high performance, multi-core) in all kind of applications, there
is an ever-increasing need for reset and supervision functions.
Reset and supervisor ICs are like the lifeguard of a system: they protect against
software and power failure. Using them makes the final product more robust,
whatever its complexity, and increases the end-users perception of quality.
2 What is the difference between a voltage detector
and a reset IC?
The main difference is the reset pulse width (t
REC
) feature on the output pin (see Section 5:
What are the following core features of reset and supervisor ICs used for?). Voltage
detectors act as comparators and do not have any t
REC
whereas it is a major feature of a
reset IC (see
Figure 1).
Figure 1. Block diagram of (1) Voltage detector and (2) Reset IC
Voltage detectors also integrate accurate hysteresis functions (V
th+
/V
th-
) whereas only one
voltage threshold is usually specified for a reset IC (V
th
). In addition, the noise immunity of a
reset IC is native by design due to the t
REC
feature.
Suggested products
• For further information on voltage detectors, please refer to STM1061
• For further information on reset ICs, please refer to STM809 and STM1001
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