General Description

The FM1233D is a supervisor circuit that monitors a microprocessor power supply or other system voltage and issues a reset pulse when a fault condition exists. Several different threshold voltages are offered to accommodate 5V systems with different tolerances.

Features

■ Precision monitoring of 5V and lower voltage microprocessor systems

■ VTH values of 4.62V, 4.38V and 4.12V

■ Automatic restart of microprocessor after power failure

■ 140ms (min) power-on RESET delay (typ.: 256ms)

■ Internal 5kΩ pull-up resistor

■ Other reset choices available: 32 to 128ms

■ Operating Temperature -40°C to +105°C

■ SOT23-3 package