Low Cost Power-On Reset and Watchdog Controllers The MAX698CPA is a microprocessor (μP) supervisory circuit manufactured by Maxim Integrated (formerly Maxim Integrated Products, now part of Analog Devices). Below are its key specifications, descriptions, and features:
### **Specifications:**
- **Manufacturer:** Maxim Integrated (now part of Analog Devices)
- **Part Number:** MAX698CPA
- **Package:** 8-Pin PDIP (Plastic Dual In-Line Package)
- **Type:** Microprocessor Supervisory Circuit
- **Operating Voltage Range:** 1.2V to 5.5V
- **Reset Threshold Voltage Options:** Adjustable or Fixed (Factory-Set)
- **Reset Timeout Period:** Adjustable (via external capacitor) or Fixed (200ms typical)
- **Operating Temperature Range:** 0°C to +70°C (Commercial Grade)
- **Watchdog Timer:** Yes (Programmable)
- **Manual Reset Input:** Yes
- **Power-On Reset (POR) Circuit:** Yes
- **Low-Power Consumption:** Typically 50µA (active mode)
### **Descriptions:**
The MAX698CPA is a supervisory IC designed to monitor power supply voltages in microprocessor-based systems. It ensures proper system operation by generating a reset signal when the supply voltage falls below a preset threshold. It includes a watchdog timer to detect software lockups and a manual reset input for user-initiated resets.
### **Features:**
1. **Voltage Monitoring:** Monitors VCC and asserts reset when voltage drops below threshold.
2. **Adjustable Reset Threshold:** Can be set via external resistors or factory-programmed.
3. **Watchdog Timer:** Prevents system lockups by requiring periodic toggling.
4. **Manual Reset Input:** Allows external push-button reset.
5. **Power-On Reset (POR):** Ensures proper startup when power is applied.
6. **Low Quiescent Current:** Minimizes power consumption.
7. **Wide Operating Voltage Range:** Supports 1.2V to 5.5V systems.
8. **8-Pin PDIP Package:** Easy-to-use through-hole mounting.
This information is based solely on the manufacturer's datasheet and technical documentation.
