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
 |
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 |
