Overview
The ADM823ZYKSZ-R7 is a supervisory circuit produced by Analog Devices Inc., designed to monitor power supply voltage levels and code execution integrity in microprocessor-based systems. This component provides essential functions such as power-on reset signals and an on-chip watchdog timer to ensure the microprocessor operates within specified parameters. It is particularly useful in applications requiring robust system reliability and fault tolerance.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| Reset Threshold (V) | 2.32 | - | - | V | - |
| Operating Temperature Range | -40°C | - | 125°C | °C | - |
| Power Supply Voltage | 1 V | - | 5.5 V | V | - |
| Watchdog Timeout Period | 1.12 sec | 1.6 sec | 2.40 sec | sec | - |
| WDI Pulse Width | 50 ns | - | - | ns | VIL = 0.4 V, VIH = 0.8 × VCC |
| WDI Input Threshold, VIL | 0.3 × VCC | 0.7 × VCC | - | V | - |
| WDI Input Current | -20 µA | 120 µA | 160 µA | µA | VWDI = VCC, time average; VWDI = 0 V, time average |
| MR Input Threshold | 0.3 × VCC | 0.7 × VCC | - | V | - |
| MR Input Pulse Width | - | - | 1 µs | µs | - |
| Package | - | - | 5-Lead SC70 | - | - |
Key Features
- Power-On Reset: Provides a reset signal during power-up to ensure the microprocessor starts in a known state.
- Watchdog Timer: Monitors microprocessor activity and asserts a reset if the watchdog input is not toggled within the preset timeout period.
- Manual Reset Input: Allows an external push-button switch to generate a reset, with integrated debounce circuitry for noise immunity.
- Low Power Consumption: Operates with a low current consumption of 5 µA.
- Power Supply Glitch Immunity: Ensures the reset output remains valid even during power supply glitches.
- Automotive Temperature Range: Operates over a wide temperature range of -40°C to +125°C.
Applications
- Microprocessor Systems: Ideal for monitoring and resetting microprocessors in various applications.
- Computers and Controllers: Used in computer systems and control units to ensure reliable operation.
- Intelligent Instruments: Suitable for use in intelligent instruments that require robust supervisory functions.
- Portable Equipment: Applicable in portable devices where power management and watchdog functions are crucial.
Q & A
- What is the primary function of the ADM823ZYKSZ-R7?
The primary function is to monitor power supply voltage levels and code execution integrity in microprocessor-based systems. - What is the operating temperature range of the ADM823ZYKSZ-R7?
The operating temperature range is -40°C to +125°C. - What is the watchdog timeout period for the ADM823ZYKSZ-R7?
The watchdog timeout period is between 1.12 seconds and 2.40 seconds. - How does the manual reset input work?
The manual reset input allows an external push-button switch to generate a reset, with integrated debounce circuitry for noise immunity. - What is the power supply voltage range for the ADM823ZYKSZ-R7?
The power supply voltage range is from 1 V to 5.5 V. - What type of package does the ADM823ZYKSZ-R7 come in?
The component comes in a 5-Lead SC70 package. - Is the ADM823ZYKSZ-R7 RoHS compliant?
Yes, the ADM823ZYKSZ-R7 is RoHS compliant. - What is the current consumption of the ADM823ZYKSZ-R7?
The current consumption is 5 µA. - Does the ADM823ZYKSZ-R7 provide power supply glitch immunity?
Yes, it provides power supply glitch immunity. - In what types of systems is the ADM823ZYKSZ-R7 typically used?
It is typically used in microprocessor systems, computers, controllers, intelligent instruments, and portable equipment.
