Overview
The CAT1161WI-42-G is a supervisory circuit produced by onsemi, formerly known as Catalyst Semiconductor. This component integrates several key functions, including a precision reset controller, a watchdog timer, and an I2C serial CMOS EEPROM. It is designed to provide robust monitoring and control capabilities for microprocessor-based systems, ensuring reliable operation and rapid response to system anomalies.
Key Specifications
| Parameter | Value |
|---|---|
| VCC Operating Range | 1.7V to 5.5V |
| Reset Thresholds | 4.62V, 4.37V, 2.92V (selectable) |
| Reset Active Time | 140 ms (min), 150 ms (typ), 160 ms (max) |
| Watchdog Timer Period | 1.6 sec (typ) |
| EEPROM Capacity | 16 bytes per page, 2 pages |
| Interface | I2C serial interface |
| Package Type | 8-pin SOIC or TSSOP |
| Operating Temperature Range | -40°C to +85°C |
Key Features
- Precision reset controller with selectable reset thresholds
- Integrated watchdog timer to monitor system activity
- 16-byte page I2C serial CMOS EEPROM for data storage
- Hardware data protection through write protect pin and VCC sense circuit
- Compact 8-pin SOIC or TSSOP package
- Wide operating voltage range (1.7V to 5.5V)
- Rapid response reset circuit
Applications
The CAT1161WI-42-G is suitable for a variety of microprocessor-based systems that require reliable monitoring and control. Common applications include:
- Embedded systems
- Industrial control systems
- Medical devices
- Automotive systems
- Consumer electronics
Q & A
- What is the primary function of the CAT1161WI-42-G? The primary function is to provide a precision reset controller, watchdog timer, and I2C serial CMOS EEPROM for microprocessor-based systems.
- What are the selectable reset thresholds for the CAT1161WI-42-G? The reset thresholds are 4.62V, 4.37V, and 2.92V.
- What is the typical watchdog timer period? The typical watchdog timer period is 1.6 seconds.
- What type of interface does the CAT1161WI-42-G use? It uses an I2C serial interface.
- What is the capacity of the EEPROM? The EEPROM has 16 bytes per page, with 2 pages available.
- What is the operating temperature range of the CAT1161WI-42-G? The operating temperature range is -40°C to +85°C.
- What types of packages are available for the CAT1161WI-42-G? It is available in 8-pin SOIC or TSSOP packages.
- What is the purpose of the write protect pin and VCC sense circuit? These provide hardware data protection.
- In what types of systems is the CAT1161WI-42-G typically used? It is used in embedded systems, industrial control systems, medical devices, automotive systems, and consumer electronics.
- What is the operating voltage range of the CAT1161WI-42-G? The operating voltage range is 1.7V to 5.5V.
