The **ADM6328-27ARTZ-R7** is a low-power, precision microprocessor supervisory circuit designed to monitor power supply voltage levels in digital systems. It provides a reset signal to the processor during power-up, power-down, and brownout conditions. --- ### 1. Key Technical Specifications The following table summarizes the primary electrical characteristics of the ADM6328-27ARTZ-R7: | Feature | Specification | | :--- | :--- | | **Threshold Voltage ($V_{TH}$)** | 2.7V | | **Supply Current ($I_{CC}$)** | 1.0 $\mu$A (Typical) | | **Output Type** | Open-Drain, Active-Low ($\overline{RESET}$) | | **Reset Timeout Period** | 100 ms (Minimum) | | **Operating Temperature** | -40°C to +85°C | | **Package / Case** | SOT-23-3 | | **Mounting Type** | Surface Mount (SMT) | --- ### 2. Functional Description The device ensures that the system processor starts in a known state and prevents code execution errors during voltage fluctuations. * **Voltage Monitoring:** It monitors the $V_{CC}$ pin. If the voltage falls below the factory-preset threshold (2.7V), the $\overline{RESET}$ output is asserted. * **Reset Assertion:** The reset signal remains active as long as $V_{CC}$ is below the threshold. * **Timeout Delay:** Once $V_{CC}$ rises above the threshold, the device keeps the reset signal active for a fixed timeout period (100ms) to allow the power supply and system clock to stabilize. * **Open-Drain Output:** Because it is an open-drain output, it requires an external pull-up resistor to a voltage source (usually the same as $V_{CC}$ or the logic level of the microcontroller). --- ### 3. Pin Configuration The ADM6328-27ARTZ-R7 is housed in a small 3-pin SOT-23 package: | Pin Number | Name | Function | | :--- | :--- | :--- | | 1 | $\overline{RESET}$ | Active-Low Output. Asserts when $V_{CC} < V_{TH}$. | | 2 | $V_{CC}$ | Supply Voltage / Monitor Input. | | 3 | GND | Ground. | --- ### 4. Typical Applications * **Microprocessor Systems:** Ensuring a clean start-up. * **Embedded Controllers:** Protecting memory and registers during power loss. * **Battery-Powered Equipment:** Due to its ultra-low current consumption ($1 \mu A$), it is ideal for portable electronics. * **Intelligent Instruments:** Maintaining system integrity in industrial environments.