Overview
The ADM1232ARMZ-REEL, produced by Analog Devices Inc., is a microprocessor supervisory circuit designed to monitor and protect microprocessor systems from various failure conditions. This device is pin-compatible with the MAX1232, DS1232LP, and DS1232, making it a versatile option for different system designs. The ADM1232ARMZ-REEL is available in an 8-lead MSOP (Micro Small Outline Package) and is specified to operate over a temperature range of −40°C to +85°C.
Key Specifications
| Parameter | Description |
|---|---|
| VCC | Up to 5.5 V |
| Logic Inputs | −0.3 V to VCC + 0.3 V |
| Storage Temperature Range | −65°C to +150°C |
| Lead Temperature (Soldering, 10 sec) | 300°C |
| Operating Temperature Range | −40°C to +85°C |
| Reset Timeout | 250 ms (minimum), adjustable up to 2000 ms |
| Strobe Pulse Width | As narrow as 20 ns |
| Tolerance Input | 5% or 10% tolerance selectable |
| Reset Output | Active High/Active Low, Open Drain/Push-Pull |
| Package | 8-lead MSOP (Micro Small Outline Package) |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Key Features
- 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
- Push-button reset input with debouncing (ignores pulses less than 1 ms, responds to pulses greater than 20 ms)
- Watchdog timer to detect microprocessor lock-up or external interrupts
- Active high and active low reset outputs available
- RoHS compliant and lead-free
Applications
- Microprocessor systems
- Portable equipment
- Computers and controllers
- Intelligent instruments
- Automotive systems
Q & A
- What is the primary function of the ADM1232ARMZ-REEL?
The primary function of the ADM1232ARMZ-REEL is to monitor the microprocessor supply voltage, detect if the microprocessor has locked up, and respond to external interrupts.
- What are the available package options for the ADM1232ARMZ-REEL?
The ADM1232ARMZ-REEL is available in an 8-lead MSOP (Micro Small Outline Package).
- What is the operating temperature range of the ADM1232ARMZ-REEL?
The operating temperature range is −40°C to +85°C.
- How does the tolerance input work on the ADM1232ARMZ-REEL?
The tolerance input determines the percentage tolerance of the supply voltage before a reset is asserted. It can be set to 5% or 10% by connecting the pin to GND or VCC, respectively.
- What is the minimum reset timeout for the ADM1232ARMZ-REEL?
The minimum reset timeout is 250 ms, but it is adjustable up to 2000 ms.
- Is the ADM1232ARMZ-REEL RoHS compliant?
- What types of reset outputs are available on the ADM1232ARMZ-REEL?
The device offers both active high and active low reset outputs, with open drain and push-pull configurations.
- How does the push-button reset input work?
The push-button reset input is debounced, ignoring pulses less than 1 ms and responding to pulses greater than 20 ms.
- What is the purpose of the watchdog timer in the ADM1232ARMZ-REEL?
The watchdog timer detects if the microprocessor has locked up or if there are no high-to-low transitions within the set time limits at the STROBE input.
- Can the ADM1232ARMZ-REEL be used in automotive systems?
