Overview
The CAT1023WI-42-GT3 is a supervisory circuit produced by onsemi, designed to provide comprehensive memory and supervisory solutions for microcontroller-based systems. This device integrates a 2k-bit serial EEPROM memory, a system power supervisor with brown-out protection, and a watchdog timer, all within a low-power CMOS technology framework. The CAT1023WI-42-GT3 is particularly useful in ensuring the reliability and stability of microcontroller, ASIC, or peripheral operations during power-up, power-down, and brownout conditions.
Key Specifications
| Parameter | Value |
|---|---|
| Voltage - Threshold | 4.25 V - 4.50 V |
| Type | Simple Reset/Power-On Reset |
| Package / Case | 8-SOIC (0.154', 3.90mm Width) |
| Reset Timeout | 130 ms Minimum |
| Reset | Active High/Active Low |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Number of Voltages Monitored | 1 |
| Mounting Type | Surface Mount |
| Base Product Number | CAT1023 |
| I2C Bus Frequency | 400 kHz |
| EEPROM Memory Size | 2k-bit |
| EEPROM Page Size | 16-byte |
| Watchdog Timer | 1.6 seconds |
Key Features
- Precision Power Supply Voltage Monitor: Supports 5 V, 3.3 V, and 3 V systems with five threshold voltage options.
- Watchdog Timer: 1.6-second watchdog timer circuit to reset the system to a known state if software or hardware glitches occur.
- Active High or Low Reset: Provides both active high and low reset signals, ensuring compatibility with various microcontrollers and ICs.
- I2C Bus Interface: 400 kHz I2C bus for memory interface.
- Low Power CMOS Technology: Operates within a low-power CMOS technology framework.
- Manual Reset Input: Allows for manual reset capability via the MR pin.
- Write Protect Feature: Write operations are disabled if the WP pin is connected to a logic high (applicable to CAT1021 and CAT1023 models).
- Data Retention and Endurance: 100-year data retention and 1,000,000 program/erase cycles.
- Industrial and Extended Temperature Ranges: Operates across -40°C to 85°C temperature range.
- RoHS Compliant and Lead-Free: Compliant with RoHS, lead-free, and halogen-free standards.
Applications
The CAT1023WI-42-GT3 is suitable for a variety of applications, including:
- Microcontroller-Based Systems: Ensures reliable operation of microcontrollers during power-up, power-down, and brownout conditions.
- ASIC and Peripheral Protection: Protects ASICs and peripherals from voltage fluctuations and system hangs.
- Industrial Automation: Used in industrial automation systems where robust power monitoring and reset capabilities are essential.
- Embedded Systems: Ideal for embedded systems requiring precise voltage monitoring and watchdog timer functions.
- Consumer Electronics: Suitable for consumer electronics that require reliable power management and data protection.
Q & A
- What is the primary function of the CAT1023WI-42-GT3?
The primary function is to provide a supervisory solution with a 2k-bit serial EEPROM memory, power supply voltage monitoring, and a watchdog timer for microcontroller-based systems.
- What are the available reset threshold voltages for the CAT1023WI-42-GT3?
The device supports five reset threshold voltage options: 4.50 V - 4.75 V, 4.25 V - 4.50 V, 3.00 V - 3.15 V, 2.85 V - 3.00 V, and 2.55 V - 2.70 V.
- What is the I2C bus frequency of the CAT1023WI-42-GT3?
The I2C bus frequency is 400 kHz.
- Does the CAT1023WI-42-GT3 support manual reset?
- What is the watchdog timer duration for the CAT1023WI-42-GT3?
The watchdog timer duration is 1.6 seconds.
- What is the operating temperature range of the CAT1023WI-42-GT3?
The operating temperature range is -40°C to 85°C.
- Is the CAT1023WI-42-GT3 RoHS compliant?
- What is the EEPROM page size of the CAT1023WI-42-GT3?
The EEPROM page size is 16 bytes.
- How many program/erase cycles does the CAT1023WI-42-GT3 support?
- What is the data retention period of the CAT1023WI-42-GT3?
