STM6821 Reset + Watchdog

The STM6xxx supervisors are self-contained devices which provide microprocessor supervisory functions. A precision voltage reference and comparator monitors the VCCinput for an out-of-tolerance condition. When an invalid VCCcondition occurs, the reset output (RST) is forced low (or high in the case of RST). These devices also offer a watchdog timer (except for STM6322/6825) and/or a push-button (MR) reset input.These devices are available in a standard 5-pin SOT23 package

技术特性
  • Precision VCCmonitoring of 5, 3.3, 3, or 2.5 V power supplies
  • RSToutputs (active low, push-pull or open drain)
  • RST outputs (active high, push-pull)
  • Reset pulse width of 1.4 ms, 200 ms and 240 ms (typ.)
  • Watchdog timeout period of 1.6 s (typ.)
  • Manual reset input (MR)
  • Low supply current - 3 μA (typ.)
  • GuaranteedRST(RST) assertion down to VCC= 1.0 V
  • Operating temperature: –40 to +85 C (industrial grade)
  • RoHS compliance Lead-free components are compliant with the RoHS directive
功能框图
STM6xxx 功能框图
STM6821 订购信息
订购型号 产品状态 美金价格 数量 封装 包装形式 温度范围 材料声明
STM6821LWY6F Active 0.5285 1000 SOT23-5L Tape And Reel -40 °C-85 °C STM6821LWY6F
STM6821TWY6F Active 0.5285 1000 SOT23-5L Tape And Reel -40 °C-85 °C STM6821TWY6F
STM6821 Proposal         -40 °C-85 °C STM6821
STM6821SWY6F Active 0.5285 1000 SOT23-5L Tape And Reel -40 °C-85 °C STM6821SWY6F
STM6821RWY6F Active 0.5285 1000 SOT23-5L Tape And Reel -40 °C-85 °C STM6821RWY6F
STM6821MWY6F Active 0.5285 1000 SOT23-5L Tape And Reel -40 °C-85 °C STM6821MWY6F
DATASHEET
描述 版本 大小
STM6821 : DS4189: 5-pin supervisor with watchdog timer and push-button reset 12 374KB
APPLICATION NOTES
描述 版本 大小
AN1336: Power-fail comparator for NVRAM supervisory devices 1 59KB
AN1957: Microprocessor supervisor functions 1 247KB