Microprocessor Supervisory Circuits The MAX691AMJE is a microprocessor (μP) supervisory circuit manufactured by Maxim Integrated. Below are its key specifications, descriptions, and features:
### **Specifications:**
- **Manufacturer:** Maxim Integrated
- **Part Number:** MAX691AMJE
- **Type:** Microprocessor Supervisory Circuit
- **Package:** 16-pin CERDIP (J-lead)
- **Operating Voltage Range:** 1.2V to 5.5V
- **Reset Threshold Accuracy:** ±1.5%
- **Reset Timeout Period:** Adjustable or fixed (depending on configuration)
- **Watchdog Timer:** Yes (programmable)
- **Manual Reset Input:** Yes
- **Battery Backup Switching:** Yes (for CMOS RAM)
- **Operating Temperature Range:** -40°C to +85°C
### **Descriptions:**
The MAX691AMJE is designed to monitor power supply voltages in microprocessor-based systems. It ensures proper system operation by generating a reset signal during power-up, power-down, or brownout conditions. It includes a watchdog timer, manual reset input, and battery backup switching for CMOS RAM.
### **Features:**
- **Voltage Monitoring:** Monitors VCC for out-of-tolerance conditions.
- **Reset Output:** Active-low reset signal for μP initialization.
- **Watchdog Timer:** Prevents system lock-up by requiring periodic toggling.
- **Battery Backup:** Automatically switches to backup battery when VCC fails.
- **Low Power Consumption:** Ideal for battery-powered applications.
- **Manual Reset Input:** Allows user-initiated reset.
- **High Accuracy:** Tight reset threshold tolerance (±1.5%).
This information is based on Maxim Integrated's datasheet for the MAX691AMJE.
