EM6325 Datasheet | EM Microelectronic

Description The EM6325 is an ultra-low current reset circuit available in a large variety of configurations and very small packages for maximum flexibility in all end-applications up to 125°C and using power supplies between 1.5V and 5.5V. This circuit monitors the supply voltage of any electronic system, and generates the appropriate reset signal after a fixed reset timeout period. The threshold defines the minimum allowed voltage which guarantees the good functionality of the system. When VDD rises above VTH, the output remains active for an additional delay time. This allows the system to stabilize before getting fully active. This circuit features a Manual Reset: an input that asserts reset when pulled low ( MR with internal pull-up). Small SOT23-5L package as well as ultra-low supply current of 2.9μA make the EM6325 an ideal choice for portable and battery-operated devices. Typical Application VDD RESET RESET MR - REXT for open-drain version only - VDD RESET MPU, DSP RESET Block Diagram Oscillator + Voltage Reference - Reset Logic RESET RESET MR GND Filter Features  Manual reset function  200ms reset timeout period (1.6ms, 25ms, 1600ms on request)  Ultra-low supply current of 2.9μA (VDD=3.3V)  Operating temperature range: -40°C to +125°C  1.5% reset threshold accuracy  11 reset threshold voltages VTH: 4.63V, 4.4V, 3.08V, 2.93V, 2.63V, 2.2V, 1.8V, 1.66V, 1.57V, 1.38V, 1.31V  2 reset output options: Active-low RESET push-pull Active-low RESET open-drain  Immune to short negative VDD transients  Guaranteed Reset valid down to 0.9V  Threshold hysteresis: 2.1% of VTH  Very small SOT23-5L, SOT143-4L Applications  puters  Servers and workstations  Modems  Wireless munication  Metering  Playstations  PDA , Webpad Pin Configuration (top view) RESET 1 push-pull / opendrain GND 2 5 VDD RESET push- 3 pull SOT23-5 4 MR top view GND 1 4 VDD RESET 2 push-pull /...