DS1232LPN

Product Overview

• Category: Integrated Circuit (IC)
• Use: Reset Generator
• Characteristics: Low Power, Precision Timing, Active High or Active Low Output
• Package: 8-Pin PDIP (Plastic Dual In-Line Package)
• Essence: Provides a reliable and accurate reset signal for microprocessors and other digital systems.
• Packaging/Quantity: Available in tubes of 25 units or reels of 1000 units.

Specifications

• Supply Voltage Range: 2.5V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Reset Timeout Period: 140ms (min)
• Reset Threshold Voltage: 2.93V (typ)
• Active High or Active Low Output Options

Detailed Pin Configuration

1. VCC: Supply Voltage Input
2. GND: Ground
3. RESET: Active High or Active Low Reset Output
4. MR: Manual Reset Input
5. VBAT: Battery Backup Input
6. GND: Ground
7. GND: Ground
8. VCC: Supply Voltage Input

Functional Features

• Generates a reset signal when the supply voltage drops below the reset threshold.
• Monitors the supply voltage continuously.
• Provides a manual reset option through the MR pin.
• Can be configured for active high or active low reset output.
• Low power consumption, suitable for battery-powered applications.
• Precision timing ensures accurate reset signals.

Advantages

• Reliable and accurate reset generation for microprocessors and digital systems.
• Flexible configuration options for active high or active low reset output.
• Low power consumption extends battery life in portable devices.
• Wide operating temperature range allows usage in various environments.
• Compact and easy-to-use 8-pin PDIP package.

Disadvantages

• Limited reset timeout period may not be suitable for certain applications requiring longer timeouts.
• Only available in 8-pin PDIP package, limiting compatibility with smaller form factors.

Working Principles

The DS1232LPN is designed to monitor the supply voltage of a digital system. When the supply voltage drops below the reset threshold, the IC generates a reset signal. This ensures that the microprocessor or digital system starts from a known state after power-up or voltage fluctuations. The reset signal remains active until the supply voltage rises above the reset threshold and a timeout period elapses.

The IC also provides a manual reset option through the MR pin. When this pin is pulled low, it forces an immediate reset regardless of the supply voltage level. This feature allows for external control over the reset function.

Detailed Application Field Plans

The DS1232LPN is widely used in various applications where reliable reset generation is crucial. Some common application fields include:

1. Microcontrollers: Ensures proper initialization and synchronization of microcontroller-based systems.
2. Embedded Systems: Provides a stable reset signal for embedded systems, preventing erratic behavior during power-up.
3. Industrial Control Systems: Maintains system integrity by resetting digital control circuits in case of power disturbances.
4. Communication Equipment: Guarantees a clean start for communication devices such as routers, modems, and switches.
5. Automotive Electronics: Supports automotive applications by ensuring proper operation after voltage fluctuations or power loss.

Detailed and Complete Alternative Models

• MAX1232: Similar functionality with additional watchdog timer feature.
• MCP809: Low-power reset generator with adjustable reset threshold voltage.
• TPS3808: Supervisor and reset IC with programmable delay and watchdog timer.

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