STM809 / STM810 / STM811 / STM812 是专用于产生微处理器复位功能的芯片。STM809 / STM810 / STM811 / STM812 在电源上电、掉电以及监控系统电源电压的变化,产生可靠的电源复位信号,使微控制器产生复位或处理中断事件。典型工作电流为6μA/5V,2.6μA/3.3V的STM809 / STM810 / STM811 / STM812 与同类型器件相比,更适合电池供电的仪器、设备。
The STM809 / STM810 / STM811 / STM812 MICROPROCESSOR RESET Circuits are low-power supervisory devices used to monitor power supplies. They perform a single function: asserting a reset signal whenever the VCC supply voltage drops below a preset value and keeping it asserted until VCC has risen above the preset threshold for a minimum period of time (trec). The STM811/812 also provide a push-button reset input (MR)。
Ordering Model | Package | Voltage Reset 1(VRST1) |
Operating Temperature |
Operating Temperature |
typ | min | max | ||
V | °C | °C | ||
STM809LWX6F | SOT 23 3 LDS | 2.63 | -40 | 85 |
STM809MWX6F | SOT 23 3 LDS | 4.38 | -40 | 85 |
STM809RWX6F | SOT 23 3 LDS | 2.63 | -40 | 85 |
STM809SWX6F | SOT 23 3 LDS | 2.93 | -40 | 85 |
STM809TWX6F | SOT 23 3 LDS | 3.08 | -40 | 85 |
型号 | 低电平有效 | 高电平有效 | 手动复位输入 | 封装 |
STM809 | Y | ? | ? | SOT23-3 |
STM810 | ? | Y | ? | SOT23-3 |
STM811 | Y | ? | Y | SOT143-4 |
STM812 | ? | Y | Y | SOT143-4 |