STM6519中文资料单按钮智能复位数据手册ST规格书

描述 Description

The Smart ResetTM devices provide a useful feature which ensures that inadvertent short reset push-button closures do not cause system resets. This is done by implementing an extended Smart Reset input delay time (tSRC), which ensures a safe reset and eliminates the need for a specific dedicated reset button.

This reset configuration provides versatility and allows the application to distinguish between a software generated interrupt and a hard system reset. When the input push-button is connected to the microcontroller interrupt input, and is closed for a short time, the processor can only be interrupted. If the system still does not respond properly, continuing to keep the push-buttons closed for the extended setup time tSRCcauses a hard reset of the processor through the reset output.

The STM6519 has one Smart Reset input (SR) with preset delayed Smart Reset setup time (tSRC). The reset output (RST) is asserted after the Smart Reset input is held active for the selected tSRCdelay time. The RSToutput remains asserted either until the SRinput goes to inactive logic level (i.e. neither fixed nor minimum reset pulse width is set) or the output reset pulse duration is fixed for tREC (i.e. factory-programmed). The device fully operates over a broad VCCrange from 2.0 V to 5.5 V.

特性 Features

• Operating voltage range 2 V to 5.5 V
• Low supply current 1 μA
• Integrated test mode
• Single Smart Reset™ push-button input with fixed extended reset setup delay (tSRC) from 0.5 s to 10 s in 0.5 s steps (typ.), option with internal input pull-up resistor
• Push-button controlled reset pulse duration
• Option 1: fully push-button controlled, no fixed or minimum pulse width guaranteed
• Option 2: defined output reset pulse duration (tREC), factory-programmed
• Single reset output
• Active-low or active-high
• Push-pull or open drain with optional pull-up resistor
• Fixed Smart Reset input logic voltage levels
• Operating temperature: -40 °C to 85 °C
• UDFN6 package 1.00 mm x 1.45 mm
• ECOPACK®2 (RoHS compliant, Halogen-Free)

简介

STM6519属于集成电路（IC）的监控器。由制造生产的STM6519监控器PMIC 监控器用于监视和/或控制电路中的电压轨，能够连接微控制器以维持一定的功率限值。监控器类型包括电池备用电路、监控器、多电压监控器、电源监控器、稳压器/监控器、复位计时器、定序器、简单复位/上电复位、智能开/关控制器、系统管理器、电压检测器和看门狗电路。