Overview
The ADM693AR-REEL, produced by Analog Devices Inc., is a microprocessor supervisory circuit designed to provide essential functions for microprocessor systems. This IC is part of the ADM690-ADM695 family and is specifically tailored to ensure reliable operation of microprocessors under various power conditions. The ADM693AR-REEL is packaged in a 16-pin SOIC (Small Outline Integrated Circuit) and operates within a supply voltage range of 4.5V to 5.5V, making it suitable for a wide range of applications.
Key Specifications
| Parameter | Value | Units | Comments |
|---|---|---|---|
| Number of Pins | 16 | - | 16-pin SOIC package |
| Supply Voltage Range | 4.5 V to 5.5 V | V | Operating voltage range |
| Reset Threshold Voltage | Typically 4.4 V | V | Threshold for power-on reset |
| Reset Pulse Width | 50 ms | ms | Duration of reset pulse after VCC returns above threshold |
| Watchdog Timer | Adjustable | - | Generates reset pulse if not serviced within timeout period |
| Power Failure Warning | 1.3 V threshold detector | V | For power fail warning or low battery detection |
| Maximum Operating Temperature | 85 °C | °C | Maximum ambient operating temperature |
| Maximum Power Dissipation | 600 mW | mW | Maximum power that can be dissipated by the IC |
Key Features
- Microprocessor Reset: Provides power-on reset output during power-up, power-down, and brownout conditions. The RESET output remains operational with VCC as low as 1 V.
- Battery Backup Switching: Supports battery backup for CMOS RAM, CMOS microprocessors, or other low-power logic.
- Watchdog Timer: Generates a reset pulse if the optional watchdog timer is not toggled within a specified time period.
- Write Protection: Offers write protection for CMOS RAM or EEPROM.
- Power Failure Warning: Includes a 1.3 V threshold detector for power fail warning, low battery detection, or monitoring a power supply other than +5 V.
- Adjustable Reset and Watchdog Timeout Periods: Allows for adjustable reset and watchdog timeout periods, enhancing flexibility in system design.
Applications
- Microprocessor Systems: Ideal for ensuring reliable operation in microprocessor-based systems, including those requiring battery backup and watchdog timer functions.
- Embedded Systems: Suitable for use in embedded systems that require robust power management and supervisory functions.
- Industrial Control Systems: Can be used in industrial control systems where reliable power-on reset and watchdog timer functions are critical.
- Automotive Systems: Applicable in automotive systems that need robust power management and supervisory circuits.
Q & A
- What is the primary function of the ADM693AR-REEL?
The primary function of the ADM693AR-REEL is to provide microprocessor supervisory functions, including power-on reset, battery backup switching, watchdog timer, and power failure warning.
- What is the supply voltage range for the ADM693AR-REEL?
The supply voltage range for the ADM693AR-REEL is 4.5V to 5.5V).
- What type of package does the ADM693AR-REEL come in?
The ADM693AR-REEL comes in a 16-pin SOIC package).
- What is the reset threshold voltage for the ADM693AR-REEL?
The reset threshold voltage for the ADM693AR-REEL is typically 4.4 V).
- Does the ADM693AR-REEL have an adjustable watchdog timer?
Yes, the ADM693AR-REEL has an adjustable watchdog timer).
- What is the maximum operating temperature for the ADM693AR-REEL?
The maximum operating temperature for the ADM693AR-REEL is 85 °C).
- What is the maximum power dissipation of the ADM693AR-REEL?
The maximum power dissipation of the ADM693AR-REEL is 600 mW).
- Does the ADM693AR-REEL support battery backup?
Yes, the ADM693AR-REEL supports battery backup for CMOS RAM and other low-power logic).
- What is the purpose of the power failure warning function in the ADM693AR-REEL?
The power failure warning function in the ADM693AR-REEL is used for power fail warning, low battery detection, or monitoring a power supply other than +5 V).
- Can the reset pulse width be adjusted on the ADM693AR-REEL?
Yes, the reset pulse width can be adjusted on the ADM693AR-REEL).
