Microprocessor Supervisory Circuits The MAX691AESE+ is a microprocessor (μP) supervisory circuit manufactured by Maxim Integrated. Below are its specifications, descriptions, and features based on factual information:
### **Specifications:**
- **Manufacturer:** Maxim Integrated
- **Part Number:** MAX691AESE+
- **Type:** Microprocessor Supervisory Circuit
- **Package:** 16-SOIC (150 mils)
- **Operating Voltage Range:** 1.2V to 5.5V
- **Reset Threshold Accuracy:** ±1.5% (typical)
- **Reset Timeout Period:** Adjustable or fixed (depends on configuration)
- **Operating Temperature Range:** -40°C to +85°C
- **Watchdog Timer:** Yes (programmable)
- **Manual Reset Input:** Yes
- **Battery Backup Switching:** Yes (for CMOS RAM)
- **Low Quiescent Current:** Typically 15µA (in battery backup mode)
### **Descriptions:**
The MAX691AESE+ is designed to monitor power supply voltages in microprocessor-based systems. It ensures proper system operation by generating a reset signal if the supply voltage drops below a preset threshold. It also includes a watchdog timer, manual reset input, and battery backup switching for CMOS RAM.
### **Features:**
1. **Voltage Monitoring:** Monitors VCC and generates a reset signal if it falls below the threshold.
2. **Watchdog Timer:** Prevents system lockup by requiring periodic toggling from the µP.
3. **Manual Reset Input:** Allows for an external push-button reset.
4. **Battery Backup Switching:** Automatically switches to backup battery power when VCC fails.
5. **Low Power Consumption:** Minimal current draw in battery backup mode.
6. **Wide Operating Voltage Range:** Supports systems from 1.2V to 5.5V.
7. **High Reset Threshold Accuracy:** Ensures reliable operation.
This information is strictly based on the manufacturer's datasheet and technical specifications.
