* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download G656/G657 - Global Mixed
Audio power wikipedia , lookup
Current source wikipedia , lookup
Electrical substation wikipedia , lookup
History of electric power transmission wikipedia , lookup
Stray voltage wikipedia , lookup
Variable-frequency drive wikipedia , lookup
Solar micro-inverter wikipedia , lookup
Power inverter wikipedia , lookup
Pulse-width modulation wikipedia , lookup
Control system wikipedia , lookup
Integrating ADC wikipedia , lookup
Alternating current wikipedia , lookup
Two-port network wikipedia , lookup
Voltage optimisation wikipedia , lookup
Voltage regulator wikipedia , lookup
Resistive opto-isolator wikipedia , lookup
Flip-flop (electronics) wikipedia , lookup
Buck converter wikipedia , lookup
Power electronics wikipedia , lookup
Mains electricity wikipedia , lookup
Schmitt trigger wikipedia , lookup
Current mirror wikipedia , lookup
Switched-mode power supply wikipedia , lookup
G656/G657 Global Mixed-mode Technology Microprocessor Reset IC Features General Description The G656/G657 are microprocessor (µP) supervisory circuits used to monitor the power supplies in µP and digital systems. They provide excellent circuit reliability and low cost. Precision Monitoring Voltage of +2.2V and +3.7V Fully Specified Over Temperature Available in Three Output Configurations Push-Pull RESET Output (G656L) Push-Pull RESET Output (G656H) Open-Drain RESET Output (G657L) Reset Deassert Time Smaller than 100µs when VCC Higher than Monitor Voltages (CD Pin Floating) Externally Programmable Time Delay Generator 27µA Supply Current at VCC=3.3V Guaranteed Reset Valid to VCC = 0.8V TSOT-23-5 Packages 2% Threshold Accuracy These circuits perform a single function: they assert a reset signal whenever the VCC supply voltage declines below a preset threshold, with hysteresis keeping it asserted for time delay determined by externally programmable time delay generator after VCC has risen above the reset threshold. The G657L has an open-drain output stage, while the G656 have push-pull outputs. The G657L’s open-drain RESET output requires a pull-up resistor that can be connected to a voltage higher than VCC. The G656L has an active-low RESET output, while the G656H has an active-high RESET output. The outputs are guaranteed to be in the correct logic state for VCC down to 0.8V. Applications Computers Controllers Intelligent Instruments The G656/G657 are available in 5-pin TSOT-23-5 package. Critical µP and µC Power Monitoring Portable / Battery-Powered Equipment Automotive Pin Configuration Typical Application Circuit VCC G656/G657 RESET (RESET) 1 VCC 2 5 VCC CD G656/G657 CD GND VCC Rpull-up* 3 4 NC CD TSOT-23-5 ()is for G656H RESET (RESET) GND µP RESET INPUT GND *G657 only ICC may increased at high TA, Therefore, can not connect Resistors to VCC to prevent Icc abnormal behavior at high TA. TEL: 886-3-5788833 http://www.gmt.com.tw Ver: 0.4 Apr 10, 2012 1