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Integrated circuits: clock modules, timers
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Real-time clock (RTCs) - 1.4 - 5.5 V | ISL120xx series
Intersils family of Real Time Clock products offer a wide variety of useful industry-standard...
Real-time clock (RTCs) - 1.4 - 5.5 V | ISL120xx series
Intersils family of Real Time Clock products offer a wide variety of useful industry-standard functions and features covering basic low-cost clock and calendar RTCs, feature-rich RTCs including supervisory functions and EEPROM memory for system personality data, as well as high-accuracy 3-in1 RTC modules which integrate and RTC, 32kHz crystal, and onboard temperature sensor.
Integrated circuit timer - MIC1555/1557
The MIC1555 IttyBitty™ CMOS RC timer/oscillator and MIC1557 IttyBitty CMOS RC oscillator are designed to provide rail-to-rail pulses for precise time delay or frequency generation.
The devices are similar in function to...
The devices are similar in function to...
Integrated circuit timer - MIC1555/1557
The MIC1555 IttyBitty™ CMOS RC timer/oscillator and MIC1557 IttyBitty CMOS RC oscillator are designed to provide rail-to-rail pulses for precise time delay or frequency generation.
The devices are similar in function to the industry standard “555”, without a frequency control (FC) pin or an open-collector discharge (D) pin. The threshold pin (TH) has precedence over the trigger (TR) input, ensuring that the BiCMOS output is off when TR is high.
The MIC1555 may be used as an astable (oscillator) or monostable (one-shot) with separate threshold and trigger inputs. In the one-shot mode, the output pulse width is precisely controlled by an external resistor and a capacitor. Time delays may be accurately controlled from microseconds to hours. In the oscillator mode, the output is used to provide precise feedback, with a minimum of one resistor and one capacitor producing a 50% duty cycle square wave.
The devices are similar in function to the industry standard “555”, without a frequency control (FC) pin or an open-collector discharge (D) pin. The threshold pin (TH) has precedence over the trigger (TR) input, ensuring that the BiCMOS output is off when TR is high.
The MIC1555 may be used as an astable (oscillator) or monostable (one-shot) with separate threshold and trigger inputs. In the one-shot mode, the output pulse width is precisely controlled by an external resistor and a capacitor. Time delays may be accurately controlled from microseconds to hours. In the oscillator mode, the output is used to provide precise feedback, with a minimum of one resistor and one capacitor producing a 50% duty cycle square wave.
