TC1270 - Microchip Technology

TC1270 (TC1271) 4-Pin uP Reset Monitors

The TC1270 and TC1271 are cost-effective system supervisor circuits designed to monitor VCC in digital systems and provide a reset signal to the host processor when necessary. A manual reset input is provided to override the reset monitor, and is suitable for use as a push button reset. No external components are required. The reset output is driven active w.

Features

• Precision VCC Monitor for 1.8V, 2.7V, 3.0V, 3.3V and 5.0V Nominal Supplies
• Manual Reset Input
• 140 ms Minimum RESET, Reset Output Duration
• RESET Output Valid to VCC = 1.0V (TC1270)
• Low 7 µA Supply Current
• VCC Transient Immunity
• Small 4-Pin SOT-143 Package
• No External Components
• Replacement for MAX811/812 and Offers a Lower Threshold Voltage Option Applications:
• Computers
• Embedded Systems
• Battery Powered Equipment
• Critical µP Power Supply Monitoring Typical Operating Circuit VCC VCC Push Button MR RESET TC1270 GND VCC Processor Reset Input (Active Low) GND Genera.