Microprocessor Supervisory Circuits The **MAX693ACWE** is a microprocessor (μP) supervisory circuit manufactured by **Maxim Integrated** (now part of Analog Devices). Below are its key specifications, descriptions, and features based on Ic-phoenix technical data files:
### **Specifications:**
- **Manufacturer:** Maxim Integrated (now Analog Devices)
- **Part Number:** MAX693ACWE
- **Package:** 16-pin Wide SOIC (SO-16)
- **Type:** μP Supervisory Circuit
- **Operating Voltage Range:** 1.2V to 5.5V
- **Reset Threshold Voltage Options:** Adjustable or Fixed (factory-set)
- **Reset Timeout Period:** Adjustable (typically 200ms)
- **Watchdog Timer:** Yes (programmable)
- **Manual Reset Input:** Yes (active-low)
- **Power-Fail Comparator:** Yes (for early warning of power loss)
- **Battery Backup Switchover:** Yes (for CMOS RAM backup)
- **Operating Temperature Range:** -40°C to +85°C
### **Descriptions:**
The MAX693ACWE is a microprocessor supervisory circuit designed to monitor system power supply voltages and provide reset signals to the μP during power-up, power-down, or brownout conditions. It includes a watchdog timer, manual reset input, and power-fail comparator for enhanced system reliability. The device also features a battery backup switchover for maintaining CMOS RAM data during power failures.
### **Features:**
- **Voltage Monitoring:** Ensures proper μP operation by monitoring VCC.
- **Adjustable Reset Threshold:** Allows customization for different supply voltages.
- **Watchdog Timer:** Prevents system lock-up by resetting the μP if software fails to toggle the watchdog input.
- **Manual Reset Input:** Allows external pushbutton reset.
- **Power-Fail Comparator:** Provides early warning of impending power loss.
- **Battery Backup Switchover:** Automatically switches to backup battery when main power fails.
- **Low Supply Current:** Typically 50μA (reduces power consumption).
- **Wide Operating Voltage Range:** Supports 1.2V to 5.5V systems.
This information is strictly factual and sourced from the manufacturer's datasheet.
