Overview
The ADM1232ARN from Analog Devices Inc. is a microprocessor supervisory circuit designed to monitor and protect microprocessors from various failure conditions. This IC is pin-compatible with the MAX1232, DS1232LP, and DS1232, making it a versatile option for a wide range of applications. It operates over a temperature range of −40°C to +85°C, ensuring reliability in diverse environmental conditions.
Key Specifications
| Parameter | Value |
|---|---|
| Package Type | 8-lead narrow body SOIC |
| Operating Temperature | −40°C to +85°C |
| VCC Maximum Rating | 5.5 V |
| Logic Inputs Range | −0.3 V to VCC + 0.3 V |
| Storage Temperature Range | −65°C to +150°C |
| Lead Temperature (Soldering, 10 sec) | 300°C |
| Reset Timeout | 250 ms (minimum) |
| Strobe Pulse Width Detection | As narrow as 20 ns |
| Tolerance Input | 5% or 10% selectable |
| Reset Outputs | Active High and Active Low |
Key Features
- Detects microprocessor supply voltage drops and generates a reset if the voltage falls below the set tolerance level.
- Monitors for microprocessor lock-up or external interrupt conditions.
- Selectable strobe timeout periods (62.5 ms, 150 ms, 250 ms, etc.) based on the TD pin configuration.
- Adjustable tolerance levels (5% or 10%) for supply voltage monitoring.
- Active High and Active Low reset outputs.
- No external components required for operation.
Applications
- Portable equipment
- Computers
- Controllers
- Intelligent instruments
- Automotive systems
- Protection against damage caused by microprocessor failure
Q & A
- What is the primary function of the ADM1232ARN? The primary function is to monitor the microprocessor supply voltage and generate a reset if the voltage drops below a specified tolerance level.
- What are the operating temperature ranges for the ADM1232ARN? The operating temperature range is −40°C to +85°C.
- What types of reset outputs does the ADM1232ARN provide? It provides both Active High and Active Low reset outputs.
- How does the tolerance input work on the ADM1232ARN? The tolerance input allows for selecting either a 5% or 10% tolerance level for supply voltage monitoring by connecting it to GND or VCC, respectively.
- What is the minimum strobe pulse width that the ADM1232ARN can detect? The minimum strobe pulse width detectable is 20 ns.
- What are the typical applications of the ADM1232ARN? Typical applications include portable equipment, computers, controllers, intelligent instruments, and automotive systems.
- Is the ADM1232ARN pin-compatible with other devices? Yes, it is pin-compatible with the MAX1232, DS1232LP, and DS1232.
- What is the package type of the ADM1232ARN? The package type is an 8-lead narrow body SOIC.
- What is the maximum VCC rating for the ADM1232ARN? The maximum VCC rating is 5.5 V.
- Does the ADM1232ARN require any external components for operation? No, it does not require any external components for operation.
