Thông số kỹ thuật
| thuộc tính | Giá trị |
| Package | Tube,Tube |
| ProductStatus | Obsolete |
| Type | Simple Reset/Power-On Reset |
| NumberofVoltagesMonitored | 1 |
| Voltage-Threshold | 4.37V, 4.62V |
| Output | Open Drain or Open Collector |
| Reset | Active High/Active Low |
| ResetTimeout | 250ms Minimum |
| OperatingTemperature | 0°C ~ 70°C (TA) |
| MountingType | Through Hole |
| Package/Case | 8-DIP (0.300, 7.62mm) |
Tổng quan
Description
The MAX1232CPA is a microprocessor supervisory circuit designed by Maxim Integrated to monitor the operation of microcontrollers and microprocessors. It provides essential functions such as reset, watchdog timer, and power-fail detection, ensuring that systems operate reliably and recover gracefully from faults.
Key features of the MAX1232CPA include:
1. Reset Functionality: Provides a reset signal to the microprocessor during power-up, power-down, and brownout conditions to prevent erratic operation.
2. Watchdog Timer: Monitors the microprocessor’s operation. If the microprocessor fails to reset the watchdog timer within a specified period, the MAX1232CPA generates a reset to restart it.
3. Power-Fail Detection: Monitors the supply voltage and issues a reset if it drops below a predefined threshold, ensuring the microprocessor only operates within safe voltage levels.
With its 8-pin DIP package, the MAX1232CPA is suitable for applications requiring robust system monitoring, such as embedded systems, industrial controllers, and other critical applications where reliability is paramount.
Key features of the MAX1232CPA include:
1. Reset Functionality: Provides a reset signal to the microprocessor during power-up, power-down, and brownout conditions to prevent erratic operation.
2. Watchdog Timer: Monitors the microprocessor’s operation. If the microprocessor fails to reset the watchdog timer within a specified period, the MAX1232CPA generates a reset to restart it.
3. Power-Fail Detection: Monitors the supply voltage and issues a reset if it drops below a predefined threshold, ensuring the microprocessor only operates within safe voltage levels.
With its 8-pin DIP package, the MAX1232CPA is suitable for applications requiring robust system monitoring, such as embedded systems, industrial controllers, and other critical applications where reliability is paramount.
Equivalent
The MAX1232CPA is a microprocessor supervisory circuit. Equivalent products include:
1. DS1232 by Maxim Integrated/Dallas Semiconductor
2. TL7705 by Texas Instruments
3. MCP1316 by Microchip Technology
4. LM1232 by STMicroelectronics
These alternatives provide similar functionality, including reset and watchdog features for microprocessor applications. Always verify pin configuration and electrical characteristics to ensure compatibility.
1. DS1232 by Maxim Integrated/Dallas Semiconductor
2. TL7705 by Texas Instruments
3. MCP1316 by Microchip Technology
4. LM1232 by STMicroelectronics
These alternatives provide similar functionality, including reset and watchdog features for microprocessor applications. Always verify pin configuration and electrical characteristics to ensure compatibility.
Pinout
The MAX1232CPA is an 8-pin microprocessor supervisory circuit designed to monitor the power supply and operation of microprocessor systems. Here's a concise breakdown of its pin count and functions:
1. Pin Count: 8 pins.
2. Pin Functions:
- Pin 1 (TD): Time Delay Set. Connect to VCC for a 150ms reset delay, or to ground for a 1.2s delay.
- Pin 2 (TOL): Tolerance Select. Determines reset threshold; connected to ground for 4.65V or left open for 4.4V.
- Pin 3 (GND): Ground. Reference ground for the device.
- Pin 4 (WDI): Watchdog Input. Requires a periodic pulse from the microprocessor to prevent reset.
- Pin 5 (RST): Active-low Reset Output. Drives low when conditions are met to reset the microprocessor.
- Pin 6 (RST): Active-high Reset Output. Complements the RST pin and goes high during reset.
- Pin 7 (VCC): Power Supply Input. Connects to the system power supply.
- Pin 8 (ST): Strobe Input. Used to test the watchdog function.
The MAX1232CPA helps ensure microprocessor reliability by managing resets and monitoring power and operation.
1. Pin Count: 8 pins.
2. Pin Functions:
- Pin 1 (TD): Time Delay Set. Connect to VCC for a 150ms reset delay, or to ground for a 1.2s delay.
- Pin 2 (TOL): Tolerance Select. Determines reset threshold; connected to ground for 4.65V or left open for 4.4V.
- Pin 3 (GND): Ground. Reference ground for the device.
- Pin 4 (WDI): Watchdog Input. Requires a periodic pulse from the microprocessor to prevent reset.
- Pin 5 (RST): Active-low Reset Output. Drives low when conditions are met to reset the microprocessor.
- Pin 6 (RST): Active-high Reset Output. Complements the RST pin and goes high during reset.
- Pin 7 (VCC): Power Supply Input. Connects to the system power supply.
- Pin 8 (ST): Strobe Input. Used to test the watchdog function.
The MAX1232CPA helps ensure microprocessor reliability by managing resets and monitoring power and operation.
Manufacturer
The MAX1232CPA is manufactured by Maxim Integrated, which is a company that specializes in designing, manufacturing, and selling analog and mixed-signal integrated circuits. Maxim Integrated is known for providing a wide range of semiconductor products for various applications, including communications, computing, industrial, and consumer markets. The company focuses on delivering high-performance, energy-efficient, and innovative solutions to meet the needs of electronic design engineers and other customers.
In 2021, Maxim Integrated was acquired by Analog Devices, another prominent company in the semiconductor industry. Analog Devices is well-regarded for its strong portfolio of analog, mixed-signal, and digital signal processing technologies. This acquisition has combined the strengths of both companies, enhancing their product offerings and expanding their market reach. Maxim Integrated’s product lines, including devices like the MAX1232CPA, continue to be an integral part of Analog Devices' extensive catalog.
In 2021, Maxim Integrated was acquired by Analog Devices, another prominent company in the semiconductor industry. Analog Devices is well-regarded for its strong portfolio of analog, mixed-signal, and digital signal processing technologies. This acquisition has combined the strengths of both companies, enhancing their product offerings and expanding their market reach. Maxim Integrated’s product lines, including devices like the MAX1232CPA, continue to be an integral part of Analog Devices' extensive catalog.
Application
The MAX1232CPA is used in applications requiring microprocessor supervisory functions. Key areas include embedded systems, industrial control systems, and consumer electronics. It helps monitor microprocessor activity by providing functions such as a watchdog timer, reset control, and manual reset input to prevent system lock-ups. It's useful in any application where reliable microprocessor operation is critical, such as in automotive electronics, telecommunications, and medical devices. The chip ensures the microprocessor operates within defined parameters and enables a system reset in case of anomalies, thereby enhancing system stability and reliability.
Package
The MAX1232CPA is a microprocessor supervisory circuit in an 8-pin PDIP (Plastic Dual In-line Package). It is designed to monitor power supplies and provide a reset to the processor during power-up, power-down, and brownout conditions.
