产品概览
The ADM810LARTZ-REEL7 from Analog Devices is a microprocessor supervisory reset circuit with 2.93V threshold and 140 ms reset timeout. The push-pull active-low output provides a clean reset to the MCU during power-up, brownout, and power-down.
主要规格
| 功能 | Microprocessor supervisory reset |
| Reset Output | Active-low push-pull |
| Threshold | 2.93V (L grade) |
| Reset Timeout | 140 ms min |
| 电源电压 | 1.0V to 5.5V |
| 静态电流 | 10 µA |
| 包装 | SOT-23-3 (2.9×1.3mm) |
工作原理
A precision voltage comparator monitors VCC against an internal trimmed 2.93V bandgap reference. When VCC falls below threshold, RESET asserts LOW. After VCC rises above threshold, the reset timeout circuit holds RESET LOW for 140 ms minimum to allow the MCU and power supply to stabilize. Push-pull output eliminates the need for an external pull-up resistor.
应用
- MCU power-on reset
- Brownout detection
- System supervisor
- FPGA / CPU reset