Overview
The ADM1232ARMZ, produced by Analog Devices Inc., is a microprocessor supervisory circuit designed to monitor and protect microprocessor systems from various fault conditions. This device is pin-compatible with the MAX1232 and Dallas DS1232, making it a versatile option for system designers. It features adjustable precision voltage monitoring and strobe monitoring, ensuring that the system remains stable and functional under different operating conditions.
Key Specifications
| Parameter | Description |
|---|---|
| Package | 8-lead MSOP (RM-8), 8-lead PDIP (N-8), 16-lead wide SOIC (RW-16), 8-lead narrow SOIC (R-8) |
| Supply Voltage | 4.5 V to 5.5 V |
| Operating Temperature | -40°C to +85°C |
| Threshold Voltage | 4.37 V, 4.62 V |
| Reset Timeout | 150 ms, 600 ms, or 1.2 sec options |
| Reset Output | Active High/Active Low/Open Drain |
| Manual Reset | Push-button reset input with internal debounce circuit |
| Watchdog Timer | Adjustable strobe monitor |
| Power Dissipation | 900 mW |
| Operating Supply Current | 50 μA |
Key Features
- Pin-compatible with MAX1232 and Dallas DS1232
- Adjustable precision voltage monitor with 4.5 V and 4.75 V options
- Adjustable strobe monitor with 150 ms, 600 ms, or 1.2 sec options
- No external components required
- Manual reset via push-button input with internal debounce circuit
- Watchdog timer to monitor microprocessor activity
- Specified from -40°C to +85°C
Applications
- Microprocessor systems
- Portable equipment
- Computers
- Controllers
- Intelligent instruments
- Automotive systems
Q & A
- What is the primary function of the ADM1232ARMZ?
The primary function of the ADM1232ARMZ is to monitor and protect microprocessor systems by supervising the supply voltage, detecting microprocessor lock-ups, and managing external interrupts.
- What are the available package options for the ADM1232ARMZ?
The ADM1232ARMZ is available in four package options: 8-lead MSOP (RM-8), 8-lead PDIP (N-8), 16-lead wide SOIC (RW-16), and 8-lead narrow SOIC (R-8).
- What are the threshold voltage options for the ADM1232ARMZ?
The threshold voltage options for the ADM1232ARMZ are 4.37 V and 4.62 V.
- How does the manual reset feature work on the ADM1232ARMZ?
The manual reset feature on the ADM1232ARMZ uses a push-button reset input with an internal debounce circuit to ignore pulses less than 1 ms and ensure a reset if the input is held low for more than 20 ms.
- What is the operating temperature range of the ADM1232ARMZ?
The operating temperature range of the ADM1232ARMZ is from -40°C to +85°C.
- Does the ADM1232ARMZ require any external components for operation?
No, the ADM1232ARMZ does not require any external components for operation.
- What types of reset outputs are available on the ADM1232ARMZ?
The ADM1232ARMZ offers active high, active low, and open-drain reset output options.
- How does the watchdog timer function on the ADM1232ARMZ?
The watchdog timer on the ADM1232ARMZ monitors the strobe input and asserts a reset if there are no high-to-low transitions within the specified time limits (150 ms, 600 ms, or 1.2 sec).
- What is the power dissipation of the ADM1232ARMZ?
The power dissipation of the ADM1232ARMZ is 900 mW.
- What is the typical operating supply current of the ADM1232ARMZ?
The typical operating supply current of the ADM1232ARMZ is 50 μA.
